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Picadillo-35T

3.5” PIC32 Embedded Display Module

Compatible with the chipKIT™/Arduino™

Document Date: 19th September 2014

Document Revision: 1.5

Picadillo-35T Display Module

Contents

1. Description ............................................................................................................................. 4

2. Features ................................................................................................................................. 4

3. Pin Configuration and Summary .............................................................................................. 5

Header Pinout Summary – By Header and Pin Number

.................................................................................. 5

Jumper Pinout Summary ........................................................................................................................ 9 3.2.

Header Pinout Summary – By IDE Pin Number .................................................................................... 12 3.3.

Header Pinout Summary – By PIC32 Chip Pin Number ........................................................................ 15 3.4.

4. Powering the Picadillo-35T .................................................................................................... 18

USB Power ............................................................................................................................................ 18 4.1.

DC Barrel Jack ....................................................................................................................................... 18 4.2.

Powering from the Headers ................................................................................................................. 18 4.3.

The Power Supplies .............................................................................................................................. 18 4.4.

5. Programming the Picadillo-35T ............................................................................................. 19

Programming with UECIDE ................................................................................................................... 19 5.1.

Programming with Microchip Dev Tools .............................................................................................. 19 5.2.

6. GPIO on the Picadillo-35T...................................................................................................... 20

GPIO Voltage Levels ............................................................................................................................. 20 6.1.

Serial Ports ........................................................................................................................................... 20 6.2.

SPI ......................................................................................................................................................... 21 6.3.

I2C ........................................................................................................................................................ 21 6.4.

PWM..................................................................................................................................................... 21 6.5.

External Interrupts ............................................................................................................................... 22 6.6.

Analog Reference ................................................................................................................................. 22 6.7.

Analog Inputs ....................................................................................................................................... 22 6.8.

7. Additional Features .............................................................................................................. 23

On Board Audio Amplifier .................................................................................................................... 23 7.1.

Real Time Clock Calendar ..................................................................................................................... 23 7.2.

Touch Screen Interface ........................................................................................................................ 23 7.3.

PIC32 on-board USB Controller ............................................................................................................ 23 7.4.

8. Display Features ................................................................................................................... 23

Display – 3.5” TFT Touch Screen .......................................................................................................... 23 8.1.

Display Precautions .............................................................................................................................. 24 8.2.

9. Software & Libraries ............................................................................................................. 24

UECIDE Programming IDE .................................................................................................................... 24 9.1.

Libraries ................................................................................................................................................ 24 9.2.

Picadillo-35T Display Module

Bootloader ........................................................................................................................................... 25 9.3.

10. Notes ................................................................................................................................. 26

11. Scribble Box ........................................................................................................................ 26

12. Mechanical Details .............................................................................................................. 27

13. Schematic Diagram ............................................................................................................. 28

14. Specifications and Ratings ................................................................................................... 29

15. Revisions ............................................................................................................................ 30

16. Legal Notice ........................................................................................................................ 31

17. Contact Information............................................................................................................ 31

4D SYSTEMS Picadillo-35T Display Module

1. Description

The Picadillo-35T is a 3.5” 320x480 resolution (Half

VGA) Embedded Display Module with Resistive

Touch, featuring the Microchip PIC32MX795F512L

32bit microcontroller, featuring Arduino™/

chipKIT™ style headers for easy attachment of

shields, and compatible with UECIDE, MPIDE and

MPLAB X Programming IDE’s.

The Picadillo-35T was designed with complete

system control in mind. It features a 3.5” display

along with a ton of GPIO, making it a perfect

candidate for system control which demands a GUI

or user interface.

The PIC32MX795F512L is a powerful 32bit

microcontroller from Microchip, which has 512Kb

of Flash and 128Kb of SRAM, runs at 80Mhz and is

capable of 105 DMIPS. It features a PMP graphics

port which is used to connect the on board 3.5”

display, allowing for fast graphics fully controlled

by the Users code. The same PIC32 is found on the

popular chipKIT Max32 Development Board.

The Picadillo-35T has been designed to be

programmed using the UECIDE IDE, which is based

on the Arduino IDE however with various

enhancements and improvements. It can also be

used with MPIDE, or even using Microchip MPLAB

X. Using UECIDE or MPIDE, the display module can

essentially be treated as if it was a chipKIT MAX32

and programmed using the familiar programming

language found on the Arduino/chipKIT.

The Picadillo-35T features an on board FTDI USB to

TTL converter for programming and powering the

display, along with an ICSP connection for using

programmers such as the PICKIT3.

Also featured on board is amicroSD connector,

audio amplifier and speaker, RTC oscillator, and

headers in the layout of the chipKit Uno32.

4D Systems highly recommends the UECIDE

Programming IDE, which is available for download

from www.uecide.org, which features the

Picadillo-35T as a board for selection from the

plugin system.

NOTE: Arduino, chipKIT and their TM’s remains the

property of the Arduino Team and Digilent inc

respectively. All references to the words Arduino,

chipKIT, Uno32, Max32 and their respective

hardware are licensed under the Creative

Commons Attribution Share-Alike license.

2. Features

• Powerful 3.5” Embedded LCD-TFT display

module powered by a Microchip

PIC32MX795F512L 32bit microcontroller.

• 320x480 HVGA Resolution, RGB 65K true to life

colours, TFT Screen with integrated 4-wire

Resistive Touch Panel.

• 512 Kbytes of Flash memory for User

Application Code and Data.

• 128 Kbytes of SRAM.

• 47 General Purpose I/O pins for user interfacing,

which include 13 Analog Inputs.

• Analog Inputs are 0V – 3.3V DC

• chipKIT Uno32 style headers, compatible with

Arduino style shields, for easy interfacing.

• The GPIO is variously configurable for

alternative functions such as:

◦ Up to 4 I2C channels available

◦ Up to 3 SPI channels available, with an

additional channel dedicated for the

microSD card.

◦ Up to 4 TTL Serial Comm ports available

◦ Up to 4 GPIO for PWM, can also be used

for Audio and Backlight control

• On-board FTDI USB to TTL converter for

power/programming.

• Breakout of the PIC32 on-board USB

connections.

• On-board micro-SD memory card connector for

multimedia storage and data logging purposes.

• Mono PWM Audio selectable using 1 of the

PWM channels, filtered and fed to an on-board

1W amplifier, driving an on board speaker.

• 5.0V Supply, available to be powered from the

on-board USB port, or 5V DC Jack. Compatible

international 1Amp DC Adaptors are available.

• Module dimensions: 56.9 x 97.6 x 15.8mm

(including corner plates). Weighing ~50 g.

• Display Viewing Area: 49.7 x 77.0mm

• 4x corner plates with 2.6mm holes for

mechanical mounting.

• RoHS and CE Compliant.

4D SYSTEMS Picadillo-35T Display Module

3. Pin Configuration and Summary

Header Pinout Summary – By Header and Pin Number

Continued overleaf…

I = Input, O = Output, P = Power, IP = Input Power, OP = Output Power

P2 Pinout (Centre Right)

Symbol

I/O

Description

1

N/C

Not Connected

2

IOREF

P

3.3V Reference pin, used for Shields which utilise an IOREF capable module.

3

RESET

I

Master Reset signal. Internally pulled up to 3.3V via a 10K resistor. An active

Low pulse greater than 2 micro-seconds will reset the module. If the module

needs to be reset externally, use open collector type circuits or at least a

200R resistor to GND. This pin is not driven low by any internal conditions.

4

+3.3V

OP

+3.3V OUTPUT pin, which is connected to the LP38692MP-3.3 regulator, and

capable of supplying up to 1Amp. Note this 3.3V supply is also used for the

Display and microSD card.

5

+5V

OP

+5V OUTPUT pin. This pin is designed to power external devices such as

Shields, not to power this module as it comes after the reverse polarity

protection. Output will be approximately 4.7V with a 5.0V input on VIN.

6

GND

P

Supply Ground

7

GND

P

Supply Ground

8

VIN

IP

Main Supply INPUT, 5V DC ONLY. This pin is designed to power the display

module, features reverse polarity protection. Input should not exceed 5.5V

DC, else damage to the Amplifier, Display and FTDI chip could result.

P3

P1

P2

P4

SPI

J2

J1

J3

J4

ICSP

4D SYSTEMS Picadillo-35T Display Module

Continued overleaf…

I = Input, O = Output, P = Power, A = Analog Input

P4 Pinout (Top Right)

Symbol

IDE Pin

Chip Pin

I/O

Description

1

AN0

A0 / 14

25

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED1/AN0/CN2/RB0

2

AN6

A6 / 20

26

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC2/AN6/OCFA/RB6

3

AN1

A1 /15

24

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC1/AN1/CN3/RB1

4

AN7

A7 / 21

27

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED2/AN7/RB7

5

AN2

A2 / 16

23

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN2/C2IN-/CN4/RB2

6

AN8

A8 / 22

32

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN8/C1OUT/RB8

7

AN3

A3 / 17

22

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN3/C2IN+/CN5/RB3

8

AN9

A9 / 23

33

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN9/C2OUT/RB9

9

AN4/SCL1

A4 / 18

21/66

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN4/C1IN-/CN6/RB4 or

AETXCLK/SCL1/INT3/RA14

10

AN10

A10 / 24

34

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN10/CVREFOUT/PMA13/RB10

11

AN5/SDA1

A5 / 19

20/67

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN5/C1IN+/VBUSON/CN7/RB5 or

AETXEN/SDA1/INT4/RA15

12

AN11

A11 / 25

35

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN11/EREXERR/AETXERR/PMA12/RB11

15 – RD14

13 – RD8

11 – RA6

9 – RA7

7 – RG14

5 – RG12

3 – RG13

1 – RA9

15 – RA0

13 – RA1

11 – RA4

9 – RA5

7 – RA2

5 – RD1

3 – RD2

1 – RB14

U1ARX – 16

U1ATX – 14

RE8 – 12

RA3 – 10

RF3 – 8

RG15 – 6

RD11 – 4

RE9 – 2

RD15 – 16

RD3 – 14

RC4 – 12

RD10 – 10

RD9 – 8

RD0 – 6

GND – 4

RA10 – 2

A11 – 12

A10 – 10

A9 – 8

A8 – 6

A7 – 4

A6 – 2

11 – A5 or SDA1

9 – A4 or SCL1

7 – A3

5 – A2

3 – A1

1 – A0

P3

P1

P4

4D SYSTEMS Picadillo-35T Display Module

I = Input, O = Output, P = Power, A = Analog Input

P1 Pinout (Centre Left)

Symbol

IDE Pin

Chip Pin

I/O

Description

1

RA9

41

28

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF-/CVREF-/AERXD2/PMA7/RA9

2

RA10

42

29

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF+/CVREF+/AERXD3/PMA6/RA10

3

RG13

40

97

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD0/RG13

4

GND

-

P

Supply Ground

5

RG12

39

96

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD1/RG12

6

RD0

13

72

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

SDO1/OC1/INT0/RD0

7

RG14

38

95

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD2/RG14

8

RD9

12

69

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SS1/IC2/RD9

9

RA7

37

92

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD3/RA7

10

RD10

11

70

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCK1/IC3/PMCS2/PMA15/RD10

11

RA6

36

91

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RA6/TRCLK

12

RC4

10

9

I/O

General Purpose I/O. This pin is 5.0V tolerant.

T5CK/SDI1/RC4

13

RD8

35

68

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RTCC/EMDIO/AEMDIO/IC1/RD8

14

RD3

9

78

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC4/RD3

15

RD14

34

47

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Requires Jumper J1 to be connected between Pin1 and

Pin3.

AETXD0/SS3/U4RX/U1CTS/CN20/RD14

16

RD15

8

48

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AETXD1/SCK3/U4TX/U1RTS/CN21/RD15

P3 Pinout (Top Left)

Symbol

IDE Pin

Chip Pin

I/O

Description

1

RB14

33

43

I/O/A

General Purpose I/O. This pin is capable of being an

Analog Input, and therefore is only 3.3V logic.

AN14/ERXD2/AETXD3/PMALH/PMA1/RB14

2

RE9

7

19

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD1/INT2/RE9

3

RD2

32

77

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC3/RD2

4

RD11

6

71

I/O

General Purpose I/O. This pin is 5.0V tolerant.

EMDC/AEMDC/IC4/PMCS1/PMA14/RD11

5

RD1

31

76

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable. Requires Jumper J1 to be

4D SYSTEMS Picadillo-35T Display Module

I = Input, O = Output, P = Power, A = Analog Input

connected between Pin3 and Pin6.

OC2/RD1

6

RG15

5

1

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXERR/RG15

7

RA2

30

58

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCL2/RA2

8

RF3

4

51

I/O

General Purpose I/O. This pin is 5.0V tolerant.

USBID/RF3

9

RA5

29

61

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDO/RA5

10

RA3

3

59

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SDA2/RA3

11

RA4

28

60

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDI/RA4

12

RE8

2

18

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD0/INT1/RE8

13

RA1

27

29

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF+/CVREF+/AERXD3/PMA6/RA10

14

U1ATX

1

53

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Transmit

SCL3/SDO3/U1TX/RF8

15

RA0

26

17

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TMS/RA0

16

U1ARX

0

52

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Receive

SDA3/SDI3/U1RX/RF2

SPI Header Pinout (Top Centre)

Symbol

IDE Pin

Chip Pin

I/O

Description

1

SDI4

49

I/O

SDA5/SDI4/U2RX/PMA9/CN17/RF4

2

N/C

-

Not Connected

3

SCK4

50

39

I/O

AC1TX/SCK4/U5TX/U2RTS/RF13

4

SDO4

51

50

I/O

SCL5/SDO4/U2TX/PMA8/CN18/RF5

5

SS4

52

40

I/O

AC1RX/SS4/U5RX/U2CTS/RF12

6

GND

-

P

Supply Ground

1 3 5

2 4 6

4D SYSTEMS Picadillo-35T Display Module

Jumper Pinout Summary 3.2.

I = Input, O = Output, P = Power, A = Analog Input

J1 Jumper Pinout (Central Left)

Symbol

Chip Pin

I/O

Description

1

RB14

43

I/O

When the Jumper is placed between Pin1 and Pin3, RB14 will be

made available on P3 Pin 1

2

RD1

76

I/O

When the Jumper is placed between Pin2 and Pin4, RD1 will be

made available on P3 Pin 5

3

-

Connected to P3 Pin 1. Either RB14 or AUDENB, depending on

Jumper.

4

-

Connected to P3 Pin 5. Either RD1 or AUDIO, depending on

Jumper.

5

AUDENB

-

I/O

When the Jumper is placed between Pin5 and Pin3, RD14 is not

available on P3 Pin 1, and is instead used to enable/disable the

on-board Audio Amplifier

6

AUDIO

-

P

When the Jumper is placed between Pin6 and Pin4, RD1 is not

available on P3 Pin 5, and is instead used to generate Audio

which is then filtered and fed into the on-board amplifier.

J2 Jumper Pinout (Top Right)

Symbol

Chip Pin

I/O

Description

1

SCL1

66

I/O

When the Jumper is placed between Pin1 and Pin3, SCL1 will be

made available on P4 Pin 9

2

SDA1

67

I/O

When the Jumper is placed between Pin2 and Pin4, SDA1 will be

made available on P4 Pin 11

3

-

Connected to P4 Pin 9. Either SCL1 or AN4 depending on Jumper

4

-

Connected to P4 Pin 11. Either SDA1 or AN5 depending on

Jumper.

5

AN4

21

I/O

When the Jumper is placed between Pin5 and Pin3, AN4 will be

made available on P4 Pin 9

6

AN5

20

I/O

When the Jumper is placed between Pin6 and Pin4, AN5 will be

made available on P4 Pin 11

AUDIO Enabled

AUDENB Enabled

Standard RD1

Standard RB14

1

2

3

4

5

6

1 3 5

2 4 6

SDA1 Enabled

AN5 Enabled

AN4 Enabled

SCL1 Enabled

4D SYSTEMS Picadillo-35T Display Module

I = Input, O = Output, P = Power, A = Analog Input

J3 Jumper Pinout (Central)

Symbol

Chip Pin

I/O

Description

1

+3.3V

-

P

When the Jumper is placed between Pin1 and Pin2, the backlight

will be forced on 100%, and not controllable by software

2

BACKLITE

-

This pin is connected to the backlight circuitry

3

RD2

77

I/O

When the Jumper is placed between Pin2 and Pin3, the backlight

will be connected to RD2 which is PWM capable, so the backlight

can be dimmed with software. RD2 is still connected to P3 Pin 3,

so be weary of this.

J4 Jumper Pinout (Central)

Symbol

Description

1

RESET

Both of these pads are connected to RESET. In the rare case that the Auto-Reset

function is not required, which is where RESET is pulled low from the DTR signal of the

FTDI USB to UART converter chip when programming takes place, the small track

between the 2 pads of this header can be cut.

If this function is wanted to be restored, a header could be carefully soldered in place,

or a jumper wire placed between the pads to enable Auto-Reset once again.

Please note, this is an unpopulated header.

2

RESET

As above.

Backlight ON

2

1

3

Backlight PWM Controllable

Bridge to restore Auto-Reset

2

1

4D SYSTEMS Picadillo-35T Display Module

I = Input, O = Output, P = Power, A = Analog Input

ICSP Header Pinout (Bottom Left)

Symbol

Chip Pin

I/O

Description

1

RESET

-

Master Reset signal. Internally pulled up to 3.3V via a 10K

resistor. An active Low pulse greater than 2 micro-seconds

will reset the module. This pin is not driven low by any

internal conditions.

2

N/C

-

Not Connected

3

GND

-

P

Power Ground

4

PGED2

27

I/O

Data I/O pin for Programming/

Debugging Communication Channel 2

5

PGEC2

26

I

Clock input pin for Programming/

Debugging Communication Channel 2

6

N/C

-

Not Connected

1 2 3 4 5 6

4D SYSTEMS Picadillo-35T Display Module

Header Pinout Summary – By IDE Pin Number 3.3.

IDE Pin

Symbol

Chip Pin

I/O

Description

0

U1ARX

52

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Receive

SDA3/SDI3/U1RX/RF2

1

U1ATX

53

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Transmit

SCL3/SDO3/U1TX/RF8

2

RE8

18

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD0/INT1/RE8

3

RA3

59

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SDA2/RA3

4

RF3

51

I/O

General Purpose I/O. This pin is 5.0V tolerant.

USBID/RF3

5

RG15

1

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXERR/RG15

6

RD11

71

I/O

General Purpose I/O. This pin is 5.0V tolerant.

EMDC/AEMDC/IC4/PMCS1/PMA14/RD11

7

RE9

19

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD1/INT2/RE9

8

RD15

48

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AETXD1/SCK3/U4TX/U1RTS/CN21/RD15

9

RD3

78

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC4/RD3

10

RC4

9

I/O

General Purpose I/O. This pin is 5.0V tolerant.

T5CK/SDI1/RC4

11

RD10

70

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCK1/IC3/PMCS2/PMA15/RD10

34 – RD14

35 – RD8

36 – RA6

37 – RA7

38 – RG14

39 – RG12

40 – RG13

41 – RA9

26 – RA0

27 – RA1

28 – RA4

29 – RA5

30 – RA2

31 – RD1

32 – RD2

33 – RB14

U1ARX – 0

U1ATX – 1

RE8 – 2

RA3 – 3

RF3 – 4

RG15 – 5

RD11 – 6

RE9 – 7

RD15 – 8

RD3 – 9

RC4 – 10

RD10 – 11

RD9 – 12

RD0 – 13

RA10 – 42

A11 – 25

A10 – 24

A9 – 23

A8 – 22

A7 – 21

A6 – 20

19 – A5 or 53 -SDA1

18 – A4 or 54 -SCL1

17 – A3

16 – A2

15– A1

14 – A0

P3

P1

P4

SDI4 – 49

SCK4 – 50

SS4 – 52

51 – SDO4

4D SYSTEMS Picadillo-35T Display Module

IDE Pin

Symbol

Chip Pin

I/O

Description

12

RD9

69

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SS1/IC2/RD9

13

RD0

72

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

SDO1/OC1/INT0/RD0

14 (A0)

AN0

25

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED1/AN0/CN2/RB0

15 (A1)

AN1

24

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC1/AN1/CN3/RB1

16 (A2)

AN2

23

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN2/C2IN-/CN4/RB2

17 (A3)

AN3

22

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN3/C2IN+/CN5/RB3

18 (A4)

AN4

21

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN4/C1IN-/CN6/RB4

19 (A5)

AN5

20

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN5/C1IN+/VBUSON/CN7/RB5

20 (A6)

AN6

26

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC2/AN6/OCFA/RB6

21 (A7)

AN7

27

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED2/AN7/RB7

22 (A8)

AN8

32

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN8/C1OUT/RB8

23 (A9)

AN9

33

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN9/C2OUT/RB9

24 (A10)

AN10

34

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN10/CVREFOUT/PMA13/RB10

25 (A11)

AN11

35

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN11/EREXERR/AETXERR/PMA12/RB11

26

RA0

17

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TMS/RA0

27

RA1

38

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TCK/RA1

28

RA4

60

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDI/RA4

29

RA5

61

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDO/RA5

30

RA2

58

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCL2/RA2

31

RD1

76

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable. Requires Jumper J1 to be

connected between Pin3 and Pin6.

OC2/RD1

32

RD2

77

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC3/RD2

33 (A14)

RB14

43

I/O/A

General Purpose I/O. This pin is capable of being an Analog

Input, and therefore is only 3.3V logic.

AN14/ERXD2/AETXD3/PMALH/PMA1/RB14

34

RD14

47

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Requires Jumper J1 to be connected between Pin1 and Pin3.

AETXD0/SS3/U4RX/U1CTS/CN20/RD14

35

RD8

68

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RTCC/EMDIO/AEMDIO/IC1/RD8

4D SYSTEMS Picadillo-35T Display Module

IDE Pin

Symbol

Chip Pin

I/O

Description

36

RA6

91

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RA6/TRCLK

37

RA7

92

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD3/RA7

38

RG14

95

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD2/RG14

39

RG12

96

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD1/RG12

40

RG13

97

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD0/RG13

41

RA9

28

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF-/CVREF-/AERXD2/PMA7/RA9

42

RA10

29

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF+/CVREF+/AERXD3/PMA6/RA10

43

RB12

41

-

YU (Y Up) – Used exclusively for Touch Screen

44

RB13

42

-

XL (X Left) – Used exclusively for Touch Screen

45

RC2

7

-

YD (Y Down) – Used exclusively for Touch Screen

46

RC3

8

-

XR (X Right) – Used exclusively for Touch Screen

47

RC1

6

O

LCD Display Reset – Used exclusively for Display

48

RG9

14

O

SD Card CS/SS – Used exclusively for SD Card

ERXCLK/AERXCLK/EREFCLK/AEREFCLK/SS2/U6RX/

U3CTS/PMA2/CN11/RG9

49

RF4

49

I/O

General Purpose I/O. SPI Header MISO.

SDA5/SDI4/U2RX/PMA9/CN17/RF4

50

RF13

39

I/O

General Purpose I/O. SPI Header SCK.

SCK4/U5TX/U2RTS/RF13

51

RF5

50

I/O

General Purpose I/O. SPI Header MOSI.

SCL5/SDO4/U2TX/PMA8/CN18/RF5

52

RF12

40

I/O

General Purpose I/O. SPI Header CS/SS.

SS4/U5RX/U2CTS/RF12

53

RA15

67

I/O

General Purpose I/O. I2C SDA.

AETXEN/SDA1/INT4/RA15

54

RA14

66

I/O

General Purpose I/O. I2C SCL

AETXCLK/SCL1/INT3/RA14

55

RG7

11

O

SD Card MOSI – Used exclusively for SD Card.

ECRS/SDA4/SDI2/U3RX/PMA4/CN9/RG7

56

RG8

12

I

SD Card MISO – Used exclusively for SD Card.

ERXDV/AERXDV/ECRSDV/AECRSDV/SCL4/SDO2/U3TX/PMA3/

CN10/RG8

57

RG6

10

O

SD Card SCK – Used exclusively for SD Card.

ECOL/SCK2/U6TX/U3RTS/PMA5/CN8/RG6

4D SYSTEMS Picadillo-35T Display Module

Header Pinout Summary – By PIC32 Chip Pin Number 3.4.

Chip Pin

IDE Pin

Symbol

I/O

Description

1

5

RG15

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXERR/RG15

2

VDD

3

PMD5 – Used for the Display

4

PMD6 – Used for the Display

5

PMD7 – Used for the Display

6

47

RC1

O

LCD Display Reset – Used exclusively for Display

7

45

RC2

-

YD (Y Down) – Used exclusively for Touch Screen

8

46

RC3

-

XR (X Right) – Used exclusively for Touch Screen

9

10

RC4

I/O

General Purpose I/O. This pin is 5.0V tolerant.

T5CK/SDI1/RC4

10

57

RG6

O

SD Card SCK – Used exclusively for SD Card.

ECOL/SCK2/U6TX/U3RTS/PMA5/CN8/RG6

11

55

RG7

O

SD Card MOSI – Used exclusively for SD Card.

ECRS/SDA4/SDI2/U3RX/PMA4/CN9/RG7

12

56

RG8

I

SD Card MISO – Used exclusively for SD Card.

ERXDV/AERXDV/ECRSDV/AECRSDV/SCL4/SDO2/U3TX/PMA3/

CN10/RG8

13

MCLR

14

48

RG9

O

SD Card CS/SS – Used exclusively for SD Card

ERXCLK/AERXCLK/EREFCLK/AEREFCLK/SS2/U6RX/

U3CTS/PMA2/CN11/RG9

15

VSS

16

VDD

17

26

RA0

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TMS/RA0

18

2

RE8

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD0/INT1/RE8

19

7

RE9

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AERXD1/INT2/RE9

20

19 (A5)

AN5

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN5/C1IN+/VBUSON/CN7/RB5

21

18 (A4)

AN4

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN4/C1IN-/CN6/RB4

22

17 (A3)

AN3

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN3/C2IN+/CN5/RB3

23

16 (A2)

AN2

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN2/C2IN-/CN4/RB2

24

15 (A1)

AN1

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC1/AN1/CN3/RB1

25

14 (A0)

AN0

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED1/AN0/CN2/RB0

26

20 (A6)

AN6

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGEC2/AN6/OCFA/RB6

27

21 (A7)

AN7

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

PGED2/AN7/RB7

28

41

RA9

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF-/CVREF-/AERXD2/PMA7/RA9

29

42

RA10

I/O

General Purpose I/O. This pin is 5.0V tolerant.

VREF+/CVREF+/AERXD3/PMA6/RA10

30

AVDD

4D SYSTEMS Picadillo-35T Display Module

31

AVSS

32

22 (A8)

AN8

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN8/C1OUT/RB8

33

23 (A9)

AN9

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN9/C2OUT/RB9

34

24 (A10)

AN10

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN10/CVREFOUT/PMA13/RB10

35

25 (A11)

AN11

A/I/O

General Purpose I/O. This pin is 5.0V tolerant.

AN11/EREXERR/AETXERR/PMA12/RB11

36

VSS

37

VDD

38

27

RA1

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TCK/RA1

39

50

RF13

I/O

General Purpose I/O. SPI Header SCK.

SCK4/U5TX/U2RTS/RF13

40

52

RF12

I/O

General Purpose I/O. SPI Header CS/SS.

SS4/U5RX/U2CTS/RF12

41

43

RB12

-

YU (Y Up) – Used exclusively for Touch Screen

42

44

RB13

-

XL (X Left) – Used exclusively for Touch Screen

43

33 (A14)

RB14

I/O/A

General Purpose I/O. This pin is capable of being an Analog

Input, and therefore is only 3.3V logic.

AN14/ERXD2/AETXD3/PMALH/PMA1/RB14

44

PMA0 – Used for the Display

45

VSS

46

VDD

47

34

RD14

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AETXD0/SS3/U4RX/U1CTS/CN20/RD14

48

8

RD15

I/O

General Purpose I/O. This pin is 5.0V tolerant.

AETXD1/SCK3/U4TX/U1RTS/CN21/RD15

49

RF4

I/O

General Purpose I/O. SPI Header MISO.

SDA5/SDI4/U2RX/PMA9/CN17/RF4

50

51

RF5

I/O

General Purpose I/O. SPI Header MOSI.

SCL5/SDO4/U2TX/PMA8/CN18/RF5

51

4

RF3

I/O

General Purpose I/O. This pin is 5.0V tolerant.

USBID/RF3

52

0

U1ARX

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Receive

SDA3/SDI3/U1RX/RF2

53

1

U1ATX

I/O

General Purpose I/O. This pin is 5.0V tolerant.

Primary Serial Port, Serial0 Transmit

SCL3/SDO3/U1TX/RF8

54

VBUS

55

VUSB

56

D-/RG3 – Broken out to access USB Signals

57

D+/RG2 – Broken out to access USB Signals

58

30

RA2

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCL2/RA2

59

3

RA3

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SDA2/RA3

60

28

RA4

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDI/RA4

61

29

RA5

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TDO/RA5

62

VDD

63

OSC1/CLKI/RC12 – Main Clock Crystal Oscillator

4D SYSTEMS Picadillo-35T Display Module

64

OSC2/CLKO/RC15 – Main Clock Crystal Oscillator

65

VSS

66

54

RA14

I/O

General Purpose I/O. I2C SCL

AETXCLK/SCL1/INT3/RA14

67

53

RA15

I/O

General Purpose I/O. I2C SDA.

AETXEN/SDA1/INT4/RA15

68

35

RD8

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RTCC/EMDIO/AEMDIO/IC1/RD8

69

12

RD9

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SS1/IC2/RD9

70

11

RD10

I/O

General Purpose I/O. This pin is 5.0V tolerant.

SCK1/IC3/PMCS2/PMA15/RD10

71

6

RD11

I/O

General Purpose I/O. This pin is 5.0V tolerant.

EMDC/AEMDC/IC4/PMCS1/PMA14/RD11

72

13

RD0

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable. SDO1/OC1/INT0/RD0

73

SOSCI/CN1/RC13 – RTC Clock Crystal Oscillator

74

SOSCO/T1CK/CN0/RC14 – RTC Clock Crystal Oscillator

75

VSS

76

31

RD1

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC2/RD1

77

32

RD2

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC3/RD2

78

9

RD3

I/O

General Purpose I/O. This pin is 5.0V tolerant.

This pin is PWM Capable.

OC4/RD3

79

ETXD2/IC5/PMD12/RD12 – Used for the Display

80

ETXD3/PMD13/CN19/RD13 – Used for the Display

81

OC5/PMWR/CN13/RD4 – Used for the Display

82

PMRD/CN14/RD5 – Used for the Display

83

ETXEN/PMD14/CN15/RD6 – Used for the Display

84

ETXCLK/PMD15/CN16/RD7 – Used for the Display

85

VCAP/VDDCORE

86

VDD

87

ETXD1/PMD11/RF0 – Used for the Display

88

ETXD0/PMD10/RF1 – Used for the Display

89

ETXERR/PMD9/RG1 – Used for the Display

90

PMD8/RG0 – Used for the Display

91

36

RA6

I/O

General Purpose I/O. This pin is 5.0V tolerant.

RA6/TRCLK

92

37

RA7

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD3/RA7

93

PMD0/RE0 – Used for the Display

94

PMD1/RE1 – Used for the Display

95

38

RG14

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD2/RG14

96

39

RG12

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD1/RG12

97

40

RG13

I/O

General Purpose I/O. This pin is 5.0V tolerant.

TRD0/RG13

98

PMD2/RE2 – Used for the Display

99

PMD3/RE3 – Used for the Display

100

PMD4/RE4 – Used for the Display

4D SYSTEMS Picadillo-35T Display Module

4. Powering the Picadillo-35T

USB Power 4.1.

The Picadillo-35T is able to be powered numerous

ways, however the most common will be using the

USB Mini jack, which is also used to program the

display module.

The Picadillo-35T runs off a 5.0V DC supply, and

draws approximately 250mA using an average

arrangement of features at any given time. This is

within the suitable limits of supply for most

computers USB ports, however in some cases a

powered USB hub or external power supply may

be required.

There is a 500mA PTC resettable fuse located on

the 5V line coming from the USB, to protect the

computer against excessive current draw which

may damage your PC if any unfortunate events

occur while developing with the Picadillo-35T.

DC Barrel Jack 4.2.

The Picadillo-35T Features a DC Barrel Jack,

designed for a fine pitch DC Jack, 2.35mm in

diameter, with a centre hole of 0.7mm, and barrel

length of 8mm or more.

A suitable 1 Amp 5.0V DC Adaptor is available from

the 4D Systems website, which has been designed

specifically for 4D Systems.

The Barrel Jack on board is a CUI Inc PJ1-023-SMT

if more information is required.

Powering from the Headers 4.3.

The Picadillo-35T is able to be powered off the

Arduino style headers. There is a VIN pin located

on Pin 8 of the P2 Header. This pin accepts only

5.0VDC, with a maximum input of approximately

5.5VDC. Input outside this range could damage the

module as some peripherals run directly of the 5V

bus.

There is also a +5V pin, located on Pin 5 of the P2

header. This is NOT designed for direct input, this

is an output pin for supplying external devices.

This pin comes after the reverse polarity

protection, so it is designed for output only. This

pin will supply approximately VIN – 0.3V.

The Power Supplies 4.4.

On board the Picadillo-35T are two 3.3V

regulators. There are no 5.0V regulators, so power

input to the Picadillo-35T is required to be a

regulated 5.0V supply.

There is a dedicated LP2992IM5-3.3 3.3V 250mA

regulator for the PIC32 itself, which aims to

provide the PIC32 with an isolated supply so any

noise induced by external circuits will be at a

minimum relative to the PIC32’s supply.

There is then a 3.3V Max 1A regulator for the

peripherals and for the User, which is a

LP38692MP-3.3. This powers peripherals such as

the microSD card, and the display logic. The +3.3V

pin on the P2 header, is powered off this supply.

This supply is enabled by default, but there is a

single pad on the PCB labelled PER_DIS, which can

be grounded and this regulator will be disabled.

This may be useful for low power solutions.

The Audio Amplifier is powered directly off the 5V

bus, however its power supply is enabled/disabled

using the RB14 GPIO, which needs to be selected

using the J1 header.

The FTDI FT232RQ is powered off the 5V bus,

however features a simple switching circuit which

holds it in reset unless the USB cable is attached. If

powering the Picadillo-35T off the Barrel Jack or

5V header, then the FT232RQ will remain disabled.

The LCD Backlight is also powered directly off the

5V bus, and therefore the backlight may be

damaged if the display module is supplied with

power outside the recommended ranges.

When powering the display, multiple power

sources can be connected if desired, such as USB

and Barrel Jack, or USB and 5V Header Input.

There is a simple diode pair on board, so which

ever has the highest voltage will take over supply

to the display module. This protects multiple

supplies from fighting each other, and allows the

DC Barrel Jack to be used to power the display

while programming it over the USB port.

4D SYSTEMS Picadillo-35T Display Module

5. Programming the Picadillo-35T

Programming with UECIDE 5.1.

UECIDE is the perfect programming environment

for programming the Picadillo-35T using a

standard USB Mini cable.

UECIDE features the Picadillo-35T is its list of plug-

ins which are available for download, so after a

very simple setup, the IDE is ready to use with the

Picadillo-35T. Please refer to the www.uecide.org

website for further information.

The UECIDE communicates between the Computer

and the PIC32 using the Serial Port via the FTDI

FT232RQ chip, and uses a bootloader running on

the PICadilllo-35T.

Before any attempts are made to communicate

with the Picadillo-35T, the appropriate FTDI Driver

must be downloaded and installed in order to

successfully establish communications. This driver

is available for download from the product page of

the Picadillo-35T on the 4D Systems website,

www.4dsystems.com.au

When UECIDE needs to communicate with the

Picadillo-35T, the PIC32 is reset and it starts

running the bootloader. UECIDE then establishes

communication with the PIC32 using the

bootloader, and downloads the program to the

Flash of the PIC32.

When UECIDE establishes communication with the

Picadillo-35T, the DTR pin of the FT232RQ is driven

low, initiating the reset sequence. This reset pin is

coupled through a series capacitor to the MCLR

pin on the PIC32 microcontroller.

The automatic reset feature is able to be disabled

through the cutting of a trace on the PCB between

the pads of the J4 jumper. J4 is not populated by

default, but allows a header to be soldered

carefully in place if the trace is cut and the auto

reset feature is desired to be restored.

There are 2 LED’s present on the board, which

indicate RX and TX traffic through the FT232RQ.

The same information can be applied when using

MPIDE, however UECIDE is the recommended IDE.

Programming with Microchip Dev Tools 5.2.

In addition to being used with the UECIDE or

MPIDE, the Picadillo-35T board can be used as a

more traditional microcontroller development

board using the Microchip Development Tools.

The unpopulated ICSP connector located at the

bottom left of the PCB is used to connect to a

Microchip development tool, such as the PICkit3™.

Any Microchip development tool that supports the

PIC32 microcontroller family, and can be

connected via the same 6-pin interface as the

PICkit3, can be used.

Typically, a right-angle male connector is used in

the ICSP header location so that a PICkit3 can be

attached co-planar with the Picadillo-35T module.

The connector must be loaded from the top and

carefully soldered in place. The PICkit3 will be

upright (button and LEDs visible), with Pin 1

located on the Left Hand Side, and marked with a

dot.

Note, the ICSP header does not provide a 3.3V

connection to the Picadillo-35T, as more than 3.3V

is required to power up the module. The 3.3V pin

is therefore N/C, and an external power supply

must be used, such as power from the USB, DC

Jack or 5V Header pin.

Note: On the PICKit3 Programmer, the 3.3V

Output to ‘Power Target Circuit from Tool’ must be

enabled else the programmer will not see the

PIC32 processor, even though this 3.3V is not used

to power the Picadillo-35T itself.

The Microchip MPLAB® IDE or the MPLAB® X IDE

can be used to program and debug code running

on the Picadillo-35T board. These programs can be

downloaded from the Microchip web site.

Using the Microchip development tools to

program the Picadillo-35T board will cause the

bootloader to be erased. To use the board with

the UECIDE or MPIDE again, it is necessary to

program the bootloader back onto the board. The

bootloader source code and compiled image can

be found on the 4D Systems website, under the

Picadillo-35T product page,

www.4dsystems.com.au

4D SYSTEMS Picadillo-35T Display Module

6. GPIO on the Picadillo-35T

GPIO Voltage Levels 6.1.

The Picadillo-35T features a Microchip PIC32

microcontroller, which itself runs off 3.3V.

Typically the Arduino range of development

boards was 5.0V and therefore shields used 5.0V

IO. The concern with development platforms that

run 3.3V logic is whether they can handle 5V input

signals from external devices, and whether the

3.3V logic levels will be high enough to activate a

logic high condition on 5V logic shields.

The Picadillo-35T feature a PIC32 which has 5V

tolerant digital GPIO, which means that 5V logic

can be safely connected to this modules digital

GPIO without any worry of damage to the module.

The analog input pins however are only 3.3V, and

therefore inputs on those pins (AN0 through

AN11, along with RB12) should not have inputs

exceeding 3.3V. That said, the Picadillo-35T

features clamp diodes and current limiting

resistors, which aims to protect the processor

from over voltage conditions, such as 5V logic

inputs. It is therefore safe to use 5V inputs on

these pins, however it should be noted the analog

inputs will only read up to a 3.3V level.

When using this board with 5V shields, it should be

noted that the minimum high level voltage level of

the PIC32 is 2.4V when sourcing 12mA of current.

While some 5V shields/devices will accept this as a

logic high level, some will not. Many 5V logic

devices will however work correctly with 3.3V

logic.

Serial Ports 6.2.

The Picadillo-35T makes available 4 Serial UART

ports of the PIC32 for the User.

UART port 0: Asynchronous serial port.

RX0 and TX0. These pins are connected to the P3

Header and are also connected to the FT232R USB

serial converter. It is possible to use these pins to

connect to an external serial device when not

using the USB serial interface. This uses UART1 on

the PIC32 microcontroller itself.

Name

Chip Pin

IDE Pin

Header

U1RX (RX0)

52

0

P3 Pin16

U1TX (TX0)

53

1

P3 Pin14

UART port 1: Asynchronous serial port.

RX1 and TX1. These pins are connected to the P1

Header. This uses UART4 on the PIC32

microcontroller itself, RD14 and RD15.

Name

Chip Pin

IDE Pin

Header

U4RX (RX1)

47

34

P1 Pin15

U4TX (TX1)

48

8

P1 Pin16

UART port 2: Asynchronous serial port.

RX2 and TX2. These pins are connected to the SPI

Header. This uses UART2 on the PIC32

microcontroller, RF4 and RF5.

Name

Chip Pin

IDE Pin

Header

U2RX (RX2)

49

SPI Pin1

U2TX (TX2)

50

51

SPI Pin4

UART port 3: Asynchronous serial port.

RX3 and TX3. These pins are connected to the SPI

Header. This uses UART5 on the PIC32

microcontroller, RF12 and RF13.

Name

Chip Pin

IDE Pin

Header

U5RX (RX3)

40

52

SPI Pin5

U5TX (TX3)

39

50

SPI Pin3

4D SYSTEMS Picadillo-35T Display Module

SPI 6.3.

The Picadillo-35T features an on board microSD

card connector, which communicates to the PIC32

via the SPI Bus. Please note that a microSD card

which supports SPI is a requirement.

microSD Card: The on board microSD connector

uses the SPI2 port which is (SS2, SDI2, SDO2, SCK2)

on the PIC32 microcontroller, RG9, RG7, RG8, RG6.

These are the IDE pins used for the microSD Card:

Name

Chip Pin

IDE Pin

SS2 (CS)

14

48

SDI2 (MOSI)

11

55

SDO2 (MISO)

12

56

SCK2 (SCK)

10

57

These signals are not broken out to any headers,

and only feature on the microSD socket itself.

SPI Header, SPI Channel 1: Synchronous serial

port.

The SPI Header, labelled ‘SPI’ and located at the

top centre of the Picadillo-35T, uses the SPI4 port

which is (SS4, SDI4, SDO4, SCK4) on the PIC32

microcontroller, RF12, RF5, RF4, RF13.

These are the IDE pins used for the SPI Header:

Name

Chip Pin

IDE Pin

Header

SS4 (CS)

40

52

SPI Pin5

SDI4 (MOSI)

49

SPI Pin1

SDO4 (MISO)

50

51

SPI Pin4

SCK4 (SCK)

39

50

SPI Pin3

SPI Channel 2: Synchronous serial port.

On the P1 Header, there is an SPI Port available

which uses the SPI1 port which is (SS1, SDI1, SDO1,

SCK1) on the PIC32 microcontroller, RD9, RC4,

RD0, RD10.

These are the IDE pins used for this SPI channel.

Name

Chip Pin

IDE Pin

Header

SS1 (CS)

69

12

P1 Pin8

SDI1 (MOSI)

9

10

P1 Pin12

SDO1 (MISO)

72

13

P1 Pin6

SCK1 (SCK)

70

11

P1 Pin10

SPI Channel 3: Synchronous serial port.

There is an SPI Port available which uses the SPI3

port which is (SS3, SDI3, SDO3, SCK3) on the PIC32

microcontroller, RD14, RF2, RF8, RD15.

These are the IDE pins used for this SPI channel.

Name

Chip Pin

IDE Pin

Header

SS3 (CS)

47

34

P1 Pin15

SDI3 (MOSI)

52

0

P3 Pin16

SDO3 (MISO)

53

1

P3 Pin14

SCK3 (SCK)

48

8

P1 Pin16

I2C 6.4.

I2C Channel 1: Synchronous serial port.

After selecting Jumper J2 to the appropriate

location, I2C is available on the P4 header. This

uses I2C1 on the PIC32 microcontroller, RA15 and

RA14.

Name

Chip Pin

IDE Pin

Header

SDA1

67

53

P4 Pin11

SCL1

66

54

P4 Pin9

Note: The I2C channel on the Picadillo-35T does

not feature on board I2C pull-up resistors, which

are required as I2C uses open collector drivers.

Typical pull-up resistors around 4K7 ohm are

acceptable, however does depend on the number

of devices found on the bus, the length of the

wires, and the clock speed being used.

Note: Additional I2C channels are available. Please

refer to the Microchip datasheet for more

information on these ports, and then cross

reference using the Schematic found in the

appendix, to find the pin and header they are

found on the Picadillo-35T.

PWM 6.5.

There are 4 PWM channels available on the

Picadillo-35T, and 2 of these have on board

functions if the appropriate jumper is placed.

Name

Chip Pin

IDE Pin

Header

OC1 (RD0)

72

13

P1 Pin6

OC2 (RD1)

76

31

P3 Pin5

OC3 (RD2)

77

32

P3 Pin3

OC4 (RD3)

78

9

P1 Pin14

OC2/RD1 - this can be used to generate PWM

audio which then feeds into the on board Audio

Amplifier. Requires the J1 Jumper to be set

correctly.

OC3/RD2 - this can be used to control the

backlight with PWM to set various level of

backlight brightness. Requires the J3 Jumper to be

set correctly.

4D SYSTEMS Picadillo-35T Display Module

External Interrupts 6.6.

There are 5 External Interrupts available on the

Picadillo-35T. Please take note that some are

located on pins used for other functions, so

decisions need to be made as to which is utilised

for your application.

Name

Chip Pin

IDE Pin

Header

INT0 (RD0)

72

13

P3 Pin10

INT1 (RE8)

18

2

P3 Pin12

INT2 (RE9)

19

7

P3 Pin2

INT3 (RA14)

66

54

P4 Pin9

INT4 (RA15)

67

53

P4 Pin11

INT3 – This is shared with the I2C Port, and can be

used as a GPIO/INT with the appropriate selection

of the J2 Jumper.

INT4 – This is shared with the I2C Port, and can be

used as a GPIO/INT with the appropriate selection

of the J2 Jumper

Analog Reference 6.7.

It is possible to specify an Analog Reference to be

something other than the internal 3.3V reference

used by default, by applying a voltage to P1 Pin 2.

The external voltage must be between 0V and

3.3V. If an external voltage is not required, this pin

can be used as a GPIO digital pin.

There is a negative voltage reference also, found

on P1 Pin 1, however this generally is unused as

the default negative input is tied to AGND.

Please refer to the Microchip datasheet of the

PIC32 for more information.

Name

Chip Pin

IDE Pin

Header

VREF+ (RA10)

29

42

P1 Pin2

VREF- (RA9)

28

41

P1 Pin1

Note: When these pins are used for Analog

References, they cannot be used for GPIO.

Analog Inputs 6.8.

The Picadillo-35T features 13 Analog Inputs which

are accessible to the User. These are all by default

in the range of 0V to 3.3VDC, however this can be

altered with the use of the Analog Reference pins,

discussed in the previous section.

Each of the Analog Inputs is 10-bit resolution, and

capable up to a maximum of 1Msps read rate.

Each analog input is fitted with current limiting

resistors and clamp diodes, to protect the inputs

from overvoltage conditions, such as applying 5V

to these inputs. If 5V is applied, the circuitry will

clamp the voltage down to 3.3V. It is not possible

to read an analog voltage with a level higher than

3.3V.

Of the 13 Analog Inputs, 12 of them are located on

Header P4, which is the ‘normal’ location for

Arduino/Chipkit style boards. There is an

additional analog Input on the Picadillo-35T which

is found on Header P3 Pin1 (AN14, aka RB14). This

can be utilised as an Analog input if required,

however is typically used to control the Audio

Amplifier Enable.

Name

Chip Pin

IDE Pin

Header

AN0

25

A0 / 14

P4 Pin1

AN1

24

A1 / 15

P4 Pin3

AN2

23

A2 / 16

P4 Pin5

AN3

22

A3 / 17

P4 Pin7

AN4

21

A4 / 18

P4 Pin9

AN5

20

A5 / 19

P4 Pin11

AN6

26

A6 / 20

P4 Pin2

AN7

27

A7 / 21

P4 Pin4

AN8

32

A8 / 22

P4 Pin6

AN9

33

A9 / 23

P4 Pin8

AN10

34

A10 / 24

P4 Pin10

AN11

35

A11 / 25

P4 Pin12

AN14

43

A14 / 33

P3 Pin1

4D SYSTEMS Picadillo-35T Display Module

7. Additional Features

On Board Audio Amplifier 7.1.

The Picadillo-35T features an on-board amplifier,

capable of driving up to 1W and up to a 4ohm

speaker, or the small speaker found on board the

module itself.

The on-board amplifier is fed from the PIC32 using

a filtered PWM signal, and also features an

amplifier enable so the amplifier can be disabled

by the user.

Based on the settings applied to Jumper J1, will

determine if the PWM signal and Audio Enable

signals are routed from the PIC32, or if they are

routed to the headers for alternate use. It is not

possible to have the audio and amplifier enabled if

the 2 GPIO are desired to be used by the User for

other uses.

Name

Chip Pin

IDE Pin

AUDIO (RD1)

47

31

AUDENB (RB14)

43

33

The AUDENB signal is Active Low, meaning you

need to drive the AUDENB signal low in order to

Enable the on board amplifier. Drive the pin high,

or setting the pin to INPUT will disable the

amplifier. The Amplifier Enable pin on the

amplifier itself has a pull-up resistor, which will by

default hold the amplifier to be in a disabled state.

The on-board amplifier is an ST TDA2822D.

If a larger external speaker is desired, instead of

the small on board speaker, it can be carefully

unsoldered from the + and – pads on the PCB, and

a larger speaker be connected in its place.

Please note the amplifier can drive a max of 4ohm

load and a max of 1W (when using a 32ohm

speaker). The recommended speaker rating is

8ohm 0.8W.

Real Time Clock Calendar

7.2.

The Picadillo-35T utilises the built in RTCC found

on the PIC32 that can be used to maintain time

and date information. It has an on board

32.768KHz oscillator mounted and ready to go.

Please refer to the Microchip datasheet for this

PIC32 processor, for more information about the

RTCC.

Touch Screen Interface 7.3.

The Picadillo-35T has a 4 wire touch screen

interface. The following pins (2 Analog, 2 Digital)

are used to interface to the 4 wire touch:

Name

Ref

Chip Pin

IDE Pin

YU (Y Up)

RB12

41

43

XL (X Left)

RB13

42

44

YD (Y Down)

RC2

7

45

XR (X Right)

RC3

8

46

Note: These pins are dedicated to the LCD displays

4 wire touch, and are not present on any other

headers or pins.

PIC32 on-board USB Controller 7.4.

The on-board USB 2.0 controller built into the

PIC32, has been broken out to 4 pads at the top

right of the Picadillo-35T. Wires or a header can be

soldered carefully on to this location, allowing the

User to take advantage of the on board USB port

of the PIC32 Processor.

Note: This is not the same USB that is present

down the bottom left of the Picadillo-35T.

For more information on this USB Port, please

refer to the Datasheet for the PIC32 from the

Microchip website.

8. Display Features

Display – 3.5” TFT Touch Screen 8.1.

The Picadillo-35T module is equipped with a 3.5”

TFT display. Details of the display are listed below:

 Screen Size: 3.5” diagonal, 320x480 resolution,

65K colours

 Integrated 4-Wire Resistive Touch Screen

 Screen Dimensions: 54.5 x 83.0 x 3.35mm

 Viewing Area: 49.76 x 77.04mm

 Pixel Pitch: 0.153(H) x 0.153(V)mm

 Brightness: 220cd/m2

 Contrast Ratio: 500:1

 Viewing Angle Above Centre: 60 degrees

 Viewing Angle Below Centre: 60 degrees

 Viewing Angle Left of Centre: 70 degrees

 Viewing Angle Right of Centre: 70 degrees

 Viewing Direction: 6 O'clock

 7 LEDs for Backlighting

4D SYSTEMS Picadillo-35T Display Module

Note: The Displays used are the highest rated

‘Grade A’ Displays, which allow for 0-4 defective

pixels. A defective pixel could be solid Black

(Dead), White, Red, Green or Blue.

Display Precautions 8.2.

• Avoid having to display the same image/object

on the screen for lengthy periods of time. This will

cause a burn-in which is a common problem with

all types of display technologies. Blank the screen

after a while or dim it very low by adjusting the

contrast. Better still; implement a screen saver

feature.

• Moisture and water can damage the display.

Moisture on the surface of a powered display will

cause the electrodes to corrode. Wipe off any

moisture gently or let the display dry before usage.

• Dirt from fingerprint oil and fat can easily stain

the surface of the display. Gently wipe off any

stains with a soft lint-free cloth.

• The performance of the display will degrade

under high temperature and humidity. Avoid such

conditions when storing.

• Do not tamper with the display flex cable that is

connected to the control board. This may affect

the connection between the display and the

driving circuitry and cause failure. Under NO

CIRCUMSTANCES should you disconnect the FPC

connector which connects the display with the

PCB. This is extremely delicate and if disconnected

incorrectly, or connected incorrectly, either or

both the display or the PCB connector can be

irreversibly damaged. Do not take this warning

lightly. This will void your warranty.

• Displays are susceptible to mechanical shock and

any excessive force exerted on the module may

result in deformed zebra stripes, a cracked display

cell and broken backlight

• Always use the mounting holes on the module's

corner plates to mount the display.

9. Software & Libraries

UECIDE Programming IDE 9.1.

The UECIDE Programming IDE is the recommended

programming IDE for the Picadillo-35T, and

features a plugin specifically for the Picadillo-35T,

allowing the display module to be selected and

programmed without the need to download

separate core files and set them up.

The UECIDE is a free application developed by

Majenko Technologies, and is available for

download from the UECIDE website,

www.uecide.org.

UECIDE is available for download for PC, MAC and

Linux Operating Systems, providing flexibility for

the operating system of your choice.

Libraries 9.2.

The Picadillo-35T is also compatible with the TFT

and supporting library, written by Majenko

Technologies, which is available for download

from their Github Repository,

https://github.com/TFTLibraries

This library provides both basic and advanced

graphics features, and allows you to rapidly

develop your application without the need to

worry about writing low level TFT Graphics code

yourself.

4D SYSTEMS Picadillo-35T Display Module

Provided with the TFT Library, are a range of demo

applications specifically written for the Picadillo-

35T, which demonstrate some of the features of

the display module.

A repository of Fonts is also available from

Majenko Technologies, available for download

from here: https://github.com/TFTFonts

Other libraries, such as BMPFile, and Widgets are

also available from Majenko Technologies

TFTLibraries Github repository, which are

compatible with the Picadillo-35T

Bootloader 9.3.

The Picadillo-35T utilises a bootloader which

enables the PIC32 Processor to be programmed

using the on board FTDI USB to Serial IC, by simply

connecting a USB cable between your PC and the

Picadillo-35T. If however you wish to change the

bootloader, simply connect a suitable

programming device on to the ICSP headers, such

as the PICKit3, and program the PIC32 as required.

Note: On the PICKit3 Programmer, the 3.3V

Output to ‘Power Target Circuit from Tool’ must be

enabled else the programmer will not see the

PIC32 processor, even though this 3.3V is not used

to power the Picadillo-35T itself.

The bootloader for the Picadillo-35T is available for

download from the Picadillo-35T product page on

the 4D Systems website, www.4dsystems.com.au

4D SYSTEMS Picadillo-35T Display Module

10. Notes

__________________________________________________________________________________________

11. Scribble Box

4D SYSTEMS uLCD-35DT Display Module

12. Mechanical Details

4D SYSTEMS Picadillo-35T Display Module

13. Schematic Diagram

4D SYSTEMS Picadillo-35T Display Module

14. Specifications and Ratings

ABSOLUTE MAXIMUM RATINGS

Operating ambient temperature ................................................................................................... -15°C to +65°C

Storage temperature .......................................................................................................................... -30°C +70°C

Voltage on any digital input pin with respect to GND ....................................................................... -0.3V to 5.5V

Voltage on any analog input pin with respect to GND………………………………………………………………..…….. 0V to 3.8V

Voltage on VCC with respect to GND ................................................................................................. -0.3V to 5.5V

Maximum current sunk/sourced by any pin (More detail please refer to Microchip Datasheet)............... 18.0mA

Maximum current sunk/sourced across all pins simultaneously……………………………………………..…………… 200.0mA

NOTE: Stresses above those listed here may cause permanent damage to the device. This is a stress rating only

and functional operation of the device at those or any other conditions above those indicated in the

recommended operation listings of this specification is not implied. Exposure to maximum rating conditions

for extended periods may affect device reliability. Please refer to the Microchip Datasheet for more

information.

RECOMMENDED OPERATING CONDITIONS

Parameter

Conditions

Min

Typ

Max

Units

Supply Voltage (VCC)

Stable external supply required

4.5

5.0

5.5

V

Operating Temperature

-10

--

+60

°C

Input Low Voltage (VIL)

3.3V, all pins

0

--

0.2VCC

V

Input High Voltage (VIH)

3.3V, non 5V tolerant pins

0.8VCC

--

3.3

V

Input High Voltage (VIH)

All GPIO pins, RX0 and TX0 pins

0.8VCC

--

5.5

V

Reset Pulse

External Open Collector

2.0

--

µs

Operational Delay

Power-Up or External Reset

500

--

3000

ms

GLOBAL CHARACTERISTICS BASED ON OPERATING CONDITIONS

Parameter

Conditions

Min

Typ

Max

Units

Supply Current (ICC)

5.0V, heavily depends on screen usage

conditions, sleep mode, audio, SD card

--

250

--

mA

Output Low Voltage

(VOL)

3.3V, IOL = 7.0mA

--

0.4

V

Output High Voltage

(VOH)

3.3V, IOL = -12.0mA

2.4

--

V

Capacitive Loading

All pins

--

50

pF

Flash Memory

Endurance

--

1000

--

E/W

Display Endurance

Hours of operation, typical

20000

H

ORDERING INFORMATION

Order Code: Picadillo-35T

Packaging: Module sealed in an antistatic foam padded 4D Systems box

4D SYSTEMS Picadillo-35T Display Module

15. Revisions

Revision

Revision Content

Date

1.2

Initial Public Release

16/06/2014

1.3

Updated drawing, slight error with AA placement on display

17/07/2014

1.4

Modified Github repository paths as they changed

13/09/2014

1.5

Name Change

19/09/2014

4D SYSTEMS Picadillo-35T Display Module

16. Legal Notice

Proprietary Information

The information contained in this document is the property of 4D Systems Pty. Ltd. and may be the subject of

patents pending or granted, and must not be copied or disclosed without prior written permission.

4D Systems endeavours to ensure that the information in this document is correct and fairly stated but does

not accept liability for any error or omission. The development of 4D Systems products and services is

continuous and published information may not be up to date. It is important to check the current position with

4D Systems. 4D Systems reserves the right to modify, update or makes changes to Specifications or written

material without prior notice at any time.

All trademarks belong to their respective owners and are recognised and acknowledged.

Disclaimer of Warranties & Limitation of Liability

4D Systems makes no warranty, either expressed or implied with respect to any product, and specifically

disclaims all other warranties, including, without limitation, warranties for merchantability, non-infringement

and fitness for any particular purpose.

Information contained in this publication regarding device applications and the like is provided only for your

convenience and may be superseded by updates. It is your responsibility to ensure that your application meets

with your specifications.

Images and graphics used throughout this document are for illustrative purposes only. All images and graphics

used are possible to be displayed on the 4D Systems range of products, however the quality may vary.

In no event shall 4D Systems be liable to the buyer or to any third party for any indirect, incidental, special,

consequential, punitive or exemplary damages (including without limitation lost profits, lost savings, or loss of

business opportunity) arising out of or relating to any product or service provided or to be provided by 4D

Systems, or the use or inability to use the same, even if 4D Systems has been advised of the possibility of such

damages.

4D Systems products are not fault tolerant nor designed, manufactured or intended for use or resale as on line

control equipment in hazardous environments requiring fail – safe performance, such as in the operation of

nuclear facilities, aircraft navigation or communication systems, air traffic control, direct life support machines

or weapons systems in which the failure of the product could lead directly to death, personal injury or severe

physical or environmental damage (‘High Risk Activities’). 4D Systems and its suppliers specifically disclaim

any expressed or implied warranty of fitness for High Risk Activities.

Use of 4D Systems’ products and devices in 'High Risk Activities' and in any other application is entirely at the

buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless 4D Systems from any and all

damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise,

under any 4D Systems intellectual property rights.

17. Contact Information

For Technical Support: support@4dsystems.com.au

For Sales Support: sales@4dsystems.com.au

Website: www.4dsystems.com.au