Lead (Pb) Free Product - RoHS Compliant
Standard Red SCDV5540
Yellow SCDV5541
Super-red SCDV5542
Green SCDV5543
High Efficiency Green SCDV5544
Vertical Format 0.123’’ 4-Character 5x5 Dot Matrix Serial Input
Dot Addressable Intelligent Display® Devices
2006-01-23 1
DESCRIPTION
The SCDV5540 (Red), SCDV5541 (Yellow),
SCDV5542 (Super-red), SCDV5543 (Green), and
SCDV5544 (High Efficiency Green) are four digit, dot
addressable 5 x 5 dot matrix, serial input, alphanumeric
Intelligent Display devices in a vertical format. The four
digits are packaged in a rugged, high quality, optically
transparent, plastic 14 pin DIP with 7.62 mm (0.3") pin
spacing.
The on-board CMOS has a 100 bit RAM, one bit associ-
ated with one LED, each to generate User Defined Char-
acters. In Power Down Mode, quiescent current
is < 50 µA.
The SCDV554X is designed for work with the serial port
of most common microprocessors. Data is transferred
into the display through the Serial Data Input (DATA),
clocked by the Serial Data Clock ( SDCLK), and enabled
by the Load I nput (LOAD).
The Clock I/O (CLK I /O) and Clock Select (CLKSEL) pi ns
off er the user the capability to supply a high speed exter-
nal multiplex clock. This feature can minimize audio
in-band interference for portable comm unication equip-
ment or eliminate the visual synchronizatio n effects f ound
in high vibration environments such as avionics equip-
ment.
FEATURES
• Vertical Format, Four 3.12 mm (0.123") 5 x 5 Dot
Matrix Characters in Red, Yellow, Super-red, Green,
or High Efficiency Green
• Optimum Display Surface Efficiency
(display area to package ratio)
• High Speed Data Input Rate: 5.0 MHz
• ROMless Serial Input, Dot Addressable Display
Ideal for User Defined Characters
• Built-in Decoders, Multiplexers and LED Drivers
• Readable from 1.8 meters (6.0 Feet)
• Wide Viewing Angle, X Axis ± 55°, Y Axis ± 55°
• Attributes:
– 100 Bit RAM for User Defined Characters
– Eight Dimming Levels
– Power Down Model (< 250 µW)
– Hardware/Software Clear Functions
– Lamp Test
– Internal or External Clock
•3.3 V Capability
2006-01-23 2
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
Package Outlines Dimensions in mm (inch)
Ordering Information
Type Color of Emission Character Height
mm (inch) Ordering Code
SCDV5540 standard red
3.2 (0.123)
Q68000A8890
SCDV5541 yellow Q68000A8891
SCDV5542 super-red Q68000A8892
SCDV5543 green Q68000A8893
SCDV5544 high efficiency green Q68000A8894
IDOD5219
4.78 (0.188)
10.16 (0.400)
±0.38 (0.015)
19.91 (0.784)
SCDV554X Z
OSRAM YYWW V
2.54 (0.100)
non-cum. 12 plcs.
2. Display matrix and pins centered on the package outline.
1.
4. Tolerance: ±0.25 (0.010)
3. Display matrix centered to pin array.
Dimension at Seating Plane
1
5.08 (0.200)
3.81 (0.150)
7.62 (0.300)
±0.51 (0.020)
1
4.06 (0.160)
±0.51 (0.020)
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 3
Maximum Ratings
Parameter Symbol Value Unit
Operating temperatur e range Top – 40 … + 85 °C
Storage temperature range Tstg – 40 … + 100 °C
DC Supply Voltage VCC -0.5 to + 7.0 V
Input Voltage Levels Relative to GND -0.5 to VCC +0.5 V
Solder Temperature
1.59 mm (0.063“) below seating plane, t < 5.0 s TS260 °C
Relative Humidity 85 %
ESD (100 pF, 1.5 kΩ) VZ2.0 kV
Input Current ± 100 mA
Maximum Number of LEDs on at 100% Brightness 64
Maximum Power Dissipation 0.65 W
Optical Characteristics at 25°C
(VCC=5.0 V at 100% brightness level, viewing angle: X axis ± 55°, Y axis ± 65°)
Description Symbol Values Unit
Red
SCDV5540
Yellow
SCDV5541
Super-red
SCDV5542
Green
SCDV5543
High Efficiency Green
SCDV5544
Luminous Intensity (min.)
Character Average (#displayed all digits) (typ.) IV0.48
1.80 1.80
5.40 1.80
5.40 1.80
5.40 2.10
6.40 mcd
mdc
Peak Wavelength (typ.) λpeak 665 583 630 565 568 nm
Dominant Wavelength (typ.) λdom 639 585 620 570 574 nm
Notes:
1. Dot to dot intensity matching at 100% brightness is 1.8:1.
2. Displays are binned for hue at 2.0 nm intervals.
3. Displays within a given intensity category have an intensity matching of 1.5:1 (max.).
2006-01-23 4
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
Timing Diagram - Data Write Cycle
Timing Diagram - Instruction Cycle
Switching Specifications
(over operating temperature range and VCC=4.5 V to 5.5 V)
Symbol Description Min. Units Symbol Description Min. Units
TRC Reset Active Time 600 ns TSDCLK Clock Period 200 ns
TLDS Load Setup Time 40 ns TSDCW Clock Width 70 ns
TDS Data Setup Time 40 ns TLDH Load Hold Time 0ns
TDH Data Hold Time 20 ns TWR Total Write Time 2.2 µs
TBL Time Between Loads 600 ns
Note:
SDCLK duty cycle = 30% Min. and 50% Max.
SDCLK
SDCLK
T
SDCW
T
DATA
LOAD
D0
DS
T
LDS
T
TDH
D7
LDH
T
LOAD
LOAD
DATA
DATA
SDCLK
SDCLK
D0 D1 D2 D3 D4 D5 D6 D7
D0 D1 D2 D3 D4 D5 D6 D7
D0
D0
BL
T
WR
T
OR
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 5
Input/Output Circuits
Figures „Inputs“ and „Clock I/O“ show the input and output resis-
tor/diode networks used for ESD protection and to eliminate sub-
strate latch-up caused by input voltage over/under shoot.
Inputs Clock I/O
Electrical Charac teristics at 25°C
Parameter Min. Typ. Max. Units Conditions
VCC 4.5 5.0 5.5 V —
ICC (Pwr Dwn Mode) 4) — — 50 µAVCC=5.0 V, all inputs=0 V or VCC
ICC 4 digits
16 dots/character —100 140 mA VCC=5.0 V, “#” displayed in all 4 digits
at 100% brightness at 25°C
IIL Input current — — –10 µAVCC=5.0 V, VIN=0 (all inputs)
IIH Input current — — 10 µAVCC=VIN=5.0 V (all inputs)
VIH 3.5 — — V VCC=4.5 V to 5.5 V
VIL — — 1.5 VVCC=4.5 V to 5.5 V
IOH (CLK I/O) —–8.9 —mA VCC=4.5 V, VOH=2.4 V
IOL (CLK I/O) —1.6 —mA VCC=4.5 V, VOL=0.4 V
θJ-pin — — 64 °C/ W —
Fext External Clock Input Frequency 120 —347 kHz VCC=5.0 V, CLKSEL=0
Fosc Internal Clock Input Frequency 120 —347 kHz VCC=5.0 V, CLKSEL=1.0
Clock I/O Bus Loading — — 240 pF —
Clock Out Rise Time — — 500 ns VCC=4.5 V, VOH=2.4 V
Clock Out Fall Time — — 500 ns VCC=4.5 V, VOH=0.4 V
FM, Digit 375 768 1086 Hz —
Notes:
1) Contact Osram OS for 3.3 Volt ope r ation .
2) Unused inputs must be tied high.
3) Peak current 5/3 x ICC.
4) External oscillator must be stopped if being used to maintain an ICC < 50 µA.
IDCD5021
GND
1 k
Ω
Input
CC
V
IDCD5026
GND
1 k
Ω
Input/Output
CC
V
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 6
Top View
Dot Matrix Format
Pin Assignment
Pin Function Pin Function
1SDCLK 14 GND
2LOAD 13 DATA
3NP 12 VCC
4NP 11 VCC
5NP 10 VCC
6RST 9CLKSEL
7GND 8CLK I/O
IDPA5302
1
7
14
8
Character 0
Character 3
IDOD5220
2.41 (0.095)
3.12 (0.123)
0.71 (0.028)
0.53 (0.021)
Tolerance: ±0.25 (0.010)
Pin Definitions
Pin Function Definitions
1SDCLK Loads data into the 8-bit serial data register
on a low to high transition.
2LOAD Low input enables data clocking into 8-bit
serial shift register. When LOAD goes high,
the contents of 8-bit serial Shift Register will
be decoded.
3NP No pin
4NP No pin
5NP No pin
6RST Asynchronous input, when low will clear the
Multiplex Counter, User RAM and Data
Register. Control Word Register is set to
100% brightne ss and the Ad dress Regist er is
set to select Digit 0. The display is blanked.
7 GND Power supply ground
8CLK I/O Outputs master clock or inputs e xternal clock.
9CLKSEL H=internal clock, L=external clock
10 VCC Power supply
11 VCC Power supply
12 VCC Power supply
13 DATA Serial data inpu t
14 GND Power supply ground
Display Column and Row Format
C0 C1 C2 C3 C4
Row 0 11111
Row 1 00100
Row 2 00100
Row 3 00100
Row 4 00100
1= Display dot „ON“
0=Display dot „OFF“
Column Data Ranges
Row 0 00H to 1FH
Row 1 20H to 3FH
Row 2 40H to 5FH
Row 3 60H to 7FH
Row 4 80H to 9FH
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 7
Operation of the SCDV554X
The SCDV554X display consis ts o f a CMO S IC co nt ai ning co ntr ol
logic and drivers f or four 5 x 5 characters. These componen ts ar e
assembled in a compact plastic package.
Individual LED dot addressablity allows the user great freedom in
creating special characters or mini -icons. The User Definable
Character Set Examples illustrate 200 different character and sym-
bol possibili ti e s.
The use of a serial data interface provides a highly efficient inter-
connection between the display and the mot her board. The
SCDV554X requires only 4 lines as compared to 15 for an equiva-
lent four character pa rallel input part.
The on-board CMOS IC is the electronic heart of the display. The
IC accepts decoded serial data, which is stored in the internal RAM.
Asynchronously the RAM is read by the character multiplexer at a
strobe rate that results in a flicker free display. Figure „SCDV554X
Block Diagram“ (page 7) shows the three functional areas of the IC .
These include: the input serial data register and control logic, a
100 bits two port RAM, and an internal multiplexer/display driver.
SCDV554X Block Diagram
LOAD
Row Address Decode
Write Character/
Write 20 x 5
Read 10 x 10
Column Output
RAM
100 bits
Display Multiplexer
5
5
Adddress
Character
Register
Adddress
Register
Word
Control 4
Software
Clear
OPCODE
Decode
3
D7 D6 D5
OPCODE DATA
D4 D3 D2 D1 D0
5
&
Power Down
Brightness &
Lamp Test
Data Clock
Serial
Data
Oscillator
Counter Chain
& Timing Logic
Column Logic & Driver
10 23
4 - 5 x 5 Characters
10
& Driver
Row Decoder 10
MUX CLK I/O
MUX Clock SEL
RESET
IDBD5261
Serial
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 8
The following explains how to format the serial data to be loaded
into the display. The user supplies a string of bit mapped decoded
characters. The contents of th is string i s sh own in Figure „Lo ad ing
Serial Character Data a“ (page 8). Figure „L oading Serial Charac-
ter Data b“ (page 8) shows that each character consist of six 8 bit
words. The first word encodes the display character location and
the succeeding five bytes are row data. The row dat a represents
the status (On, Off) of individual column LEDs. Figure „Loading
Serial Character Data c“ (page 8) shows that each 8 bit word is
formatted to include a th ree bit Operatio nal Code (OPCODE)
defined by bits D7–D5 and five bits (D4–D0) representing Column
Data, Character Address, or Control Word Data.
Figure „Loading Serial Character Data d“ (page 8) shows the
sequence f or loa ding the b y tes of data. Bringing the LOAD line low
enables the serial register to accept data. The shift action occurs
on the low to high transition of the serial data clock (SDCLK). The
least significant bit (D0) is loaded first. After eight clock pulses the
LOAD line is brought high. With this transition the OPCODE is
decoded. The decoded OPC OD E di rects D4–D0 to be latched in
the Character Address register, stored in the RAM as Column
data, or latched in the Control Word register. The control IC
requires a min imum 600 ns delay between successive byte loads.
As indicated in Fi gure „Lo ading Serial C har act er Dat a a“ (page 8),
a total of 264 bits of data are required to load all eight characters
into the display.
The Characte r Add ress Regi ster bits , D 4–D0 (Table „Load Char a c-
ter Address“ (page 9)) and Row Address Register bits, D7–D5
(Table „Load Column Data“ (page 9)) direct the Column Data bits,
D4–D0 (Table „Load Column Data“ (page 9)) to specific RAM loca-
tion. Table „Character ’D’“ (page 8) shows the Ro w Address f or the
example character “D.” Column data is written and read asynchro-
nously from the 200 bit RAM. Once loaded the internal oscillator
and character multiplexer reads the data from the RAM. These
characters are row strobed with column data as shown in Figures
„Row and Column Location“ (page 9) and „Row Strobi ng“
(page 10). The character strobe rate is determined by the internal
or user supp lied external MUX Clock and the IC’s ÷320 counter.
Loading Serial Character Data
Character “D”
Op code
D7 D6 D5 Column Data
D4 D3 D2 D1 D0
C0 C1 C2 C3 C4
Hex
Row 0 000 111 1 0 1E
Row 1 001 100 0 1 31
Row 2 010 100 0 1 51
Row 3 011 100 0 1 71
Row 4 100 111 1 0 9E
Character 0 Character 1 Character 2 Character 3
264 Clock Cycles, 52.8 µs
Example: Serial Clock = 5MHz, Clock Period = 200ns
Time between LOADS
LOAD
Serial
Clock
DATA
Clock
Period
t0
D0 D1 D2 D3 D4 D5 D6 D7
11 Clock Cycles, 2.2µs
Time
Between
Loads
600ns(min)
OPCODECharacter Address OPCODE
Column Data
D0
C4 D1
C3 D2
C2 D3
C1 D4
C0
Time
Between
Loads
600ns(min)
11 Clock Cycles, 2.2µs
Character 0
Address Row 0 Column
Data
66 Clock Cycles, 13.2µs
Row 1 Column
Data Row 2 Column
Data Row 3 Column
Data Row 4 Column
Data
D0
0 D1
0 D2
0 D3
0 D4
0 D5
1 D6
0 D7
0 D5 D6 D7
a.
b.
c.
d.
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 9
The user can activate four Control functions. These include: LED
Brightness Level, Lamp Test, IC Power Down, or Display Clear.
OPCODEs and five bit words are used to initiate these functions.
The OPCODEs and Control Words for the Character Address and
Loading Column Data are shown in Tables „Load Character
Address“ (page 9) and „Load Column Data“ (page 9).
The user can select seven specific LED brightness levels, Table
„Display Brightness“ (page 9). These brightness levels (in percent-
ages of full brightness of the display) include: 100% (F0 HEX), 53%
(F1HEX), 40% (F2HEX), 27% (F3HEX), 20% (F4HEX), 13% (F5HEX),
and 6.6% (F6HEX). The brightness levels are controlled by chang-
ing the duty factor of the row strobe pulse.
Row and Column Location
The SCDV554X offer s a unique Dis pla y P ow er Down featur e which
reduces ICC to less than 50 µA. When FFHEX is loaded, as shown in
Table „Power Down“ (page 9), the display is set to 0% brightness
and the internal multiplex clock is stopped. When in the Power
Down mode data may still be written into the RAM. The display is
reactivated by loading a new Brightness Level Control Word into
the display.
The Lamp Test is enabled by loading F8 HEX, Table „Lamp Test“
(page 9), into the serial shift re gister. This Control Word se ts al l of
the LEDs to a 53% brightness level. Operation of the Lamp Test
has no affect on the RAM and is cleared by loading a Brightness
Control Word.
The Software Clear (C0HEX), given in Table „Software Clear“
(page 9), clears the Address Register and the RAM. The display is
blanked and the Character Address Register will be set to Charac-
ter 0. The internal coun ter an d the Co ntrol Word Register a re u naf -
fected. The Software Clear will remain active until the next data
input cycle is initiated.
Load Character Address
Op code
D7 D6 D5 Character A ddress
D4 D3 D2 D1 D0 Hex Operation
Load
101 00 0 0 0 A0 Character 0
101 00 0 0 1 A1 Character 1
101 00 0 1 0 A2 Character 2
101 00 0 1 1 A3 Character 3
Load Column Data
Op code
D7 D6 D5 Column Data
D4 D3 D2 D1 D0 Operation Load
000 C0 C1 C2 C3 C4 Row 0
001 C0 C1 C2 C3 C4 Row 1
010 C0 C1 C2 C3 C4 Row 2
011 C0 C1 C2 C3 C4 Row 3
100 C0 C1 C2 C3 C4 Row 4
IDXX5185
Row 0
Row 1
Row 2
Row 3
Row 4 01234
Previously "on" LED
On LED
Off LED
Columns
Display Brightness
Op code
D7 D6 D5 Control Word
D4 D3 D2 D1 D0 Hex Operation
Level
111 10 0 0 0 F0 100%
111 10 0 0 1 F1 53%
111 10 0 1 0 F2 40%
111 10 0 1 1 F3 27%
111 10 1 0 0 F4 20%
111 10 1 0 1 F5 13%
111 10 1 1 0 F6 6.6%
Power Down
Op code
D7 D6 D5 Control Word
D4 D3 D2 D1 D0 Hex Operation
Level
111 11 1 1 1 FF 0%
brightness
Lamp Test
Op code
D7 D6 D5 Control Word
D4 D3 D2 D1 D0 Hex Operation
Level
111 10 BBB Lamp Test
(OFF)
111 11 0 0 0 F8 Lamp Test
(OFF)
Software Clear
Op code
D7 D6 D5 Control Word
D4 D3 D2 D1 D0 Hex Operation
Level
110 00 0 0 0 C0 CLEAR
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 10
Row Strobing
Multiplexer and Displ ay Driver
The four characters are row multiplexed with RAM resident column
data. The strobe rate is established by the internal or external
MUX Clock rate. The MUX Clock frequency is divided by a 320
counter chain. This results in a typical strobe rate of 750 Hz. By
pulling the Cl ock SEL l ine low, the displa y can be operate d from an
external MUX Cloc k. The external clock is a tta che d to the CL K I /O
connection (pin 8). The maximum external MUX Clock frequency
should be limited to 1.0 MHz.
An asynchro nous hardware Reset Pin is also provided. Bringing
this pin low will clear the Character Address Register, Control
Wor d Register , RAM, and blanks t he displa y. This action lea ves t he
displa y set at Char acter Address 0, and the Bright ness Le v el set at
100%.
Electrical & Mechanical Considerations
Interconnect Considerations
Optimum product performance can be had when the following
electrical and mechanical recommendations are adopted. The
SCDV554X’s IC is constructed in a high speed CMOS process,
consequently high speed noise on the SERIAL DATA, SERIAL
DATA CLOCK, LOAD and RESET lines may cause incorrect data
to be written into the serial shift register. Adhere to transmission
line termination p r ocedures when using fast line drivers and long
cables (> 10 cm).
Good digital g rounds (pins 7 and 14) and pow er supply decoupl ing
(pins 10, 11 and 12) will insure that ICC (< 400 mA peak) switching
currents do not generate localized ground bounce. Therefore it is
recommend ed that each display package use a 0.1 µF and 20 µF
capacitor betwe en VCC and ground.
When the internal MUX Clock is being used connect the CLKSEL
pin to VCC. In those applications where RESET will not be con-
nected to the system’s reset control, it is recommended that this
pin be connect ed to the center no de of a se ries 0.1 µF a nd 100 kΩ
RC network. Thus upon initi al power up the RESET will be held
low for 10 ms allowing adequate time for the system power supply
to stabilize.
ESD Protection
The input protecti on structure of the SCDV554X provides signifi-
cant protection against ESD damage. It is capable of withstanding
discharges greater than 2.0 kV. Take all the standard preca utions,
normal for CMOS components. These include properly grounding
personnel, tools, tables, and transport carriers that come in contact
with unshielded parts. If these conditions are not, or cannot be
met, keep the leads of the device shorted together or the parts in
anti-static packaging.
Soldering Considerations
The SCDV554X can be hand soldered with SN63 solder using a
grounded iron set to 260°C.
Wave soldering is also possible following these conditions: Pre-
heat that does n ot e xceed 9 3°C on the so lder side o f the PC board
or a package surface temperature of 85°C. Water soluble organic
acid flux (except carboxylic acid) or rosin-based RMA flux without
alcohol can be used.
Wave temperature of 245°C ± 5°C wi th a d w e ll between 1.5 sec. to
3.0 sec. Exposure to the wave should not exceed temperatures
abov e 2 60°C for five seco nds at 1. 59 mm (0.063") below the sea t-
ing plane. Th e packages should not be imm ersed in th e wav e.
Post Solder Cleaning Procedures
The least offensive cleaning solution is hot D.I. water (60 °C) for
less than 15 minutes. Addition of mild saponifiers is acceptable. Do
not use commercial dishwasher detergents.
For faster cleaning , so lvents may be used. Ex er cise car e in cho os -
ing solvents as so me may chemically attack the nylon package. F or
further information refer to Appnote s 18 an d 1 9 a t
www.osram-os.com
An alternative to soldering and cleaning the display modules is to
use sockets. Naturally, 14 pin DIP sockets 7.62 mm (0.300") wide
with 2.54 mm (0.100") centers work well for single displays. Multi-
ple display assemblies are best handled by longer SIP sockets or
DIP sock ets whe n av ailab le f or uni fo rm package al ignment. So ck et
manufacturers are A ries Electronics, Inc., Frenchtown, NJ; Garry
Manufacturing, New Brunswick, NJ; Robinson-Nugent, New
Albany, IN; and Samtec Electronic Hardward, New Albany, IN.
For further information refer to Appnote 22 a t www.osram-os.com
IDXX5186
Row 0
Row 1
Row 2
Row 3
Row 4 01234
Columns
Load Row 0
Load
4
Row 4
Columns
10 2 3
Row 3
Row 1
Row 0
Row 2
Load Row 1
Columns
Row 4 1
0 2 43
Load Row 2
Row 2
Row 1
Row 3
Row 0
Row 4 0Columns
213
4
Load Row 3
Row 0
Row 3
Row 1
Row 2
Row 4
Columns
012 43
Row 2
Row 1
Row 3
Row 0
Load Row 4Row
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 11
Optical Considerations
The 3.2 mm (0.123") high character of the SCDV554X gives read-
ability up to five feet. Proper filter selection enhances readability
over this distance.
Using filters emphasizes the contrast ratio between a lit LED and
the character background. This will increase the discriminati on of
different characters. The only limitation is cost. Take into consider-
ation the ambient lighting environment for the best cost/benefit
ratio for filters .
Incandescent (with almost no green) or fluorescent (with almost no
red) lights do not have the flat spectral response of sunlight. Plas-
tic band-pass filters are an inexpensive and effective way to
strengthen contrast ratios. The SCD V5540/2 are red/super-red dis-
plays and should be matched with long wavelength pass filter in
the 570 nm to 590 nm range. The SCDV5543/4 should be
matched with a yellow-green band-pass filter that peaks at
565 nm. For displays of multiple colors, neutral density grey filters
offer the best compromise.
Additional contrast enhancement is gained by shading the dis-
plays. Plastic band-pass filters with built-in louvers offer the next
step up in contrast improvement. Plastic filters can be improved
further with anti-refle ctive coatings to re duce glare . The trad e-off is
fuzzy characters. Mounting the filters close to the display reduces
this effect. Take care not to overhe at the plastic filter by allowing f or
proper air flow.
Optimal filter enhancements are gained by using circular polarized,
anti-reflective, band-pass filters. The circular polarizing further
enhances contrast by reducing the light that travels through the fil-
ter and reflects back off the display to less than 1%.
Several filter manufacturers supply quality filter materials. Some of
them are: Panelgraphic Corporation, W. Caldwell, NJ; SGL Homa-
lite, Wilmington, DE; 3M Company, Visual Products Division, St.
Paul, MN; Polaroid Corporation, Polarizer Division, Cambridge,
MA; Marks Polarized Corporation, Deer Park, NY, Hoya Optics,
Inc., Fremont, CA.
One last note on mounting filters: recessing displays and bezel
assemblies is an inexpensive way to provide a shading effect in
overhead lighting situations. Several Bezel manufacturers are:
R.M.F. Products, Batavia, IL; Nobex Components, Griffith Plastic
Corp., Burlingame, CA; Photo Chemical Prod ucts of Califor nia,
Santa Monica, CA; I.E.E.–Atlas, Van Nuys, CA.
SCDV Interface with Siem ens/Intel 8031 Microprocessor (using serial port in mode 0)
SCDV Interface with Siem ens/Intel 8031 Microprocessor (using one bit of parallel port as serial input)
IDCD5230
XTAL2 RxD
18 10
19 XTAL1
RST
917
P3.7
13
P3.3
P3.4 14
8031
U1
TxD 11 SDCLK
RST
LD
GND
CS
CLK I/O
CC
V
GND
CC
V
40
ID
+
0.01 µF
TAN
22 µF
CC
V
V
CC
1
2
6
7
14
12
9
8
13
DATA
V
CC 10
V
CC 11
IDCD5231
XTAL2 P3.0
18 10
19 XTAL1
RST
1
8031
U1 SDCLK
RST
LD
GND
CS
CLK I/O
CC
V
DATA
CC
V
40
ID
+
0.01 µF
TAN
22 µF
CC
V
V
CC
P1.0
9
20
P3.1 11
P3.6 16
P0.0 39
7
6
2
1
13
12
9
8
GND 14
CC
V
11
CC
V
10
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 12
Microprocessor Interface
The microproces sor interface is throu gh the se rial port, SPI port or
one out of ei ght d ata b its on the eight b it pa r allel p ort and also con-
trol lines SDCLK and LOAD.
Power Up Sequence
Upon power up display will come on at random. Thus the display
should be reset at power-up. The reset will set the Address Regis-
ter to Digit 0, User RAM is se t to 0 (displa y blank) t he Contro l W ord
is set to 0 (100% brightness with Lamp Test off) and the internal
counters are reset.
Cascading Multiple Displays
Multiple displays can be cascaded using the CLKSEL and C LK I/O
pins as shown below. The display designated as the Master Clock
source should ha ve it s CLKSEL pin ti ed high and the sl av es should
have their CLKSEL pins tied low. All CLK I/O pins should be tied
together. One display CLK I/O can drive 15 slave CLK I/Os. Use
RST to synchronize all display counters.
SCDV554X Interface with Motorola 68HC05C4 Micropr o cessor (using SPI port)
Cascading Multiple Displays
IDCD5232
OSC1 PA0
38 11
39 OSC2
RST
1
68HC05C4
U1 SDCLK
RST
LD
GND
CS
CLK I/O
CC
V
DATA
CC
V
40
ID
+
0.01 µF
TAN
22 µF
CC
V
V
CC
PA2
9
20
PA1 10
SCLK 33
MOSI 32
1
2
6
7
13
12
9
8
14
GND
CC
V
11
CC
V
10
IDCD5030
RST CLK SEL
Intelligent Display
CC
V
DATA SDCLK LOAD
14 more displays
in between
DATA
SDCLK
Decoder
Address Address Decode 1-14
A0
A1
A3
RST
CLK I/O
Intelligent Display
DATA
RST
SDCLK
CLK I/O
LOAD
CLK SEL
Chip
0
15
A2
LD CE
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 13
Loading Data Into the Display
Use following procedure to load data into the display:
1. Power up the display.
2. Bring RST low (600 ns duration minimum) to clear the Multiplex Counter, Address Register, Control Word Register,
User Ram and Data Register. The display will be blank. Display brightness is set to 100%.
3. If a different brightness is desired, load the proper brightness opcode into the Control Word Register.
4. Load the Digit Address into the display.
5. Load display row and column data for the selected digit.
6. Repeat steps 4 and 5 for all digits.
Data Contents for the Display in a Vertical Format „↑AB↓“
Step D7 D6 D5 D4 D3 D2 D1 D0 Function
A
B (optional) 11 0
11 1
0000 0
10BB B
CLEAR
BRIGHTNESS SELECT
1
2
3
4
5
6
10 1
000
00 1
01 0
01 1
10 0
00000
00100
01110
10101
00100
00100
DIGIT D0 SELECT
ROW 0 D0 (↑)
ROW 1 D0 (↑)
ROW 2 D0 (↑)
ROW 3 D0 (↑)
ROW 4 D0 (↑)
7
8
9
10
11
12
101
000
001
010
011
100
00001
00100
01010
11111
10001
10001
DIGIT D1 SELECT
ROW 0 D1 (A)
ROW 1 D1 (A)
ROW 2 D1 (A)
ROW 3 D1 (A)
ROW 4 D1 (A)
13
14
15
16
17
18
101
000
001
010
011
100
00010
11110
01001
01110
01001
11110
DIGIT D2 SELECT
ROW 0 D2 (B)
ROW 1 D2 (B)
ROW 2 D2 (B)
ROW 3 D2 (B)
ROW 4 D2 (B)
19
20
21
22
23
24
101
000
001
010
011
100
00011
00100
00100
10101
01110
00100
DIGIT D3 SELECT
ROW 0 D3 (↓)
ROW 1 D3 (↓)
ROW 2 D3 (↓)
ROW 3 D3 (↓)
ROW 4 D3 (↓)
Note:
If the display is already reset at Power Up, there is no need for Software Clear.
2006-01-23 14
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
User Definable Character Set Examples*
Upper and Lower Case Alphabets
Numerals and Punctuation
*CAUTION: No more than 128 LEDs “on” at one time at 100% brightness.
IDCS5089
HEX
CODE CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX
91
71
2A
5F
04 1E
29
4E
69
9E
0F
30
50
70
8F
1F
30
5E
70
9F
0F
30
53
71
8F
11
31
5F
71
91
0E
24
44
64
8E
01
21
41
71
8E
13
34
58
74
93
10
30
50
70
9F
11
3B
55
71
91
11
39
55
73
91
0E
31
51
71
8E
1E
31
5E
70
90
0C
32
56
72
8D
1E
31
5E
74
92
0F
30
4E
61
9E
1F
24
44
64
84
11
31
51
71
8E
11
31
51
6A
84
11
31
55
7B
91
11
2A
44
6A
91
11
2A
44
64
84
1F
22
44
68
9F
00
2E
52
72
8D
00
26
42
72
8C
00
23
44
62
8C
10
30
5E
71
9E
10
30
56
78
96
08
3C
48
6A
84
00
2F
50
70
8F
0C
24
44
64
8E
00
32
52
72
8D
01
21
4F
71
8F
00
2A
55
71
91
00
31
51
6A
84
00
2E
5F
70
8E
00
36
59
71
91
00
31
55
7B
91
04
2A
48
7C
88
00
2E
51
71
8E
00
32
4C
6C
92
00
2F
50
73
8F
00
3E
51
7E
90
00
31
4A
64
98
10
30
56
79
91
00
2F
51
6F
81
00
3E
44
68
9E
04
20
4C
64
8E
00
33
54
78
90
9E
29
49
69
1E 30
5E
70
1F
90
IDCS5090
HEX
CODE CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX
8E
79
33
55
0E 04
2C
44
64
8E
1E
21
46
68
9F
06
2A
5F
62
82
06
28
5E
71
8E
1F
22
44
68
88
0E
31
4E
71
8E
0E
31
4F
62
8C
0A
3F
4A
7F
8A
0F
34
4E
65
9E
06
29
5C
68
9F
19
3A
44
6B
93
08
34
4D
72
8D
0C
2C
44
68
80
02
24
44
64
82
08
24
44
64
88
0C
2C
48
64
80
04
24
5F
64
84
00
2C
4C
64
88
00
20
5F
60
80
00
20
40
6C
8C
01
22
44
68
90
04
24
44
60
84
0A
2A
40
60
80
10
28
44
62
81
0E
31
42
64
88
1C
24
44
64
9C
06
24
48
64
86
0E
35
57
70
8E
0C
24
42
64
8C
00
20
40
60
9F
04
24
40
64
84
0C
2C
40
6C
8C
11
2A
44
6E
84
0C
20
4C
64
88
15
2E
5F
6E
95
02
24
48
64
82
04
2A
51
60
80
00
3F
40
7F
80
08
35
42
60
80
08
24
42
64
88
9E
21
4E
61
1E 30
5E
61
1F
9E
07
87
64
44
24
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
2006-01-23 15
User Definable Character Set Examples* (continued)
Scientific Notations, etc.
Foreign Characters
*CAUTION: No more than 128 LEDs “on” at one time at 100% brightness.
IDCS5091
HEX
CODE CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX
86
6E
2E
5E
06 04
24
48
71
8E
1F
20
59
75
93
0E
20
4A
64
8A
0C
32
56
71
96
0E
24
4E
71
8E
00
24
4A
71
9F
10
3C
52
72
81
0E
31
5F
71
8E
10
28
44
6A
91
09
29
49
6E
90
01
2E
54
64
84
04
2E
55
6E
84
0E
31
51
6A
9B
01
2E
5A
6A
8A
0F
32
52
72
8C
1F
28
44
68
9F
18
24
48
7C
80
1C
28
44
78
80
12
36
5A
67
80
06
21
5A
67
80
07
22
59
66
80
1C
34
5C
60
80
0F
28
48
78
88
00
24
4E
7F
8E
04
22
5F
62
84
00
27
4F
78
9C
00
2E
5F
6E
84
04
28
5F
68
84
00
3C
5F
63
87
0E
3F
4E
64
80
1F
31
51
71
9F
00
20
40
60
83
04
3E
5F
7E
84
08
2C
4A
78
98
00
20
40
67
9F
04
2F
5F
6F
84
0A
35
4A
75
8A
00
23
5F
7F
9F
0E
2E
4E
6E
8E
15
2A
55
6A
95
0C
3C
5C
7C
9C
00
3F
5F
7F
80
1F
35
5F
75
9F
15
2E
44
64
84
04
2E
55
64
84
00
3F
5F
7C
80
04
24
55
6E
84
0E
3F
5B
7F
8E
91
20
56
79
1F 32
52
72
0D
8D
80
6E
04
5F
2E
IDCS5092
HEX
CODE CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX CODE
HEX
84
62
21
5F
1F 1F
21
46
64
88
01
22
46
6A
82
00
3F
44
64
9F
08
3F
49
6A
88
1F
21
45
67
8C
02
3F
51
62
8C
08
3F
49
69
92
04
3F
44
7F
84
0F
29
51
62
8C
08
2F
52
62
82
0F
21
41
61
9F
0A
3F
4A
62
8C
19
21
59
62
9C
0F
29
55
63
8C
01
3E
42
7F
86
15
35
55
62
8C
0E
20
5F
64
98
08
28
4C
6A
90
04
3F
44
64
98
0E
20
40
60
9F
1F
21
4A
64
9A
04
3E
44
6E
95
04
24
44
68
90
10
3F
50
70
8F
12
32
52
64
88
0A
2E
51
7F
91
1F
21
41
62
8C
04
34
54
75
96
02
24
4C
64
8E
0E
20
4E
60
8F
1E
25
4F
74
8F
04
2A
4E
71
8E
04
28
51
7F
81
0F
34
5F
74
97
0A
34
52
7A
96
01
21
4A
64
8A
0F
30
4F
64
98
08
24
51
71
8E
1F
28
5F
68
87
0F
33
55
79
9E
02
24
51
71
8E
1E
22
42
62
9F
0F
34
57
74
8F
04
2A
51
71
8E
1F
21
5F
61
9F
00
2A
5F
74
8B
0E
20
5F
61
8E
08
24
4E
72
8F
86
3F
51
61
04 3F
46
6A
02
92
91
71
04
51
22
2006-01-23 16
SCDV5540, SCDV5541, SCDV5542, SCDV5543, SCDV5544
Published by
OSRAM Opto Semiconductors GmbH
Wernerwerkstrasse 2, D-93049 Regensburg
www.osram-os.com
© All Rights Reserved.
Attention please!
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved. Due to technical requirements components may contain
dangerous substances. For information on the types in question please contact our Sales Organization.
If printed or downloaded, please find the latest version in the Internet.
Packing
Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office.
By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing
material that is retu rned to us unsorted or which we are not obliged to a ccept, we shall have t o invoice you for any costs
incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose! Critical
components1) may only be used in life-support devices or systems2) wit h the express written approval of OSRAM OS.
1) A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the
failure of that life-support device or system, or to affect its safety or the effectiveness of that device or system.
2) Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain
human life. If they fail, it is reasonable to assume that the health and the life of the user may be endangered.
Revision History: 2006-01-23
Previous Version: 2005-01-10
Page Subjects (major changes since last revision) Date of change
all Lead free device 2006-01-23
