TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 1, REV 4
FEATURES
* Supply voltage up to 12 V.
* Interface directly with 5 V CMOS logic µP.
* Serial link.
* can drive
two actuators 360°
three actuators 90°
* open circuit or short circuit detection
of the drivers outputs.
* Small size (SO24 package).
The 10407 is a µP peripheral for logometers control using SIN/COS PWM commands. The circuit
controls two independant sets of CMOS power bridges. A ten bits angle is displayed with a 9 bits per
quadrant resolution PWM whose frequency is set by a crystal oscillator. A power-on self test detects open or
short-circuits outputs for each logometer and a real time angle tracking avoids display errors.
The 10407 can also drive three small angle logometers (90°).
The communication with the µP is done via a three wires serial link.
The 10407 outputs an error status on a special pin.
Ordering Code
Product Code Temperature Code Package Code Option Code Packing Form Code
MLX10407 E DF AAA-000 RE
Legend:
Temperature Code: E for Temperature Range -40°C to 85°C
Package Code: DF for SOIC300Mil
Packing Form: RE for Reel
Ordering example: MLX10407EDF-AAA-000-RE
P O R
SERIAL
LINK
OSC
ROM
SEQ
LOGIC
BUF 1
BUF 2
RST VCC GND
SCLK
CS
DIN
OSCI
OSCO
ERR
SIN1M
SIN1P
fig 1. Block diagram.
COS1M
COS1P
SIN2M
SIN2P
COS2M
COS2P
VER GND
OUT6
OUT5
OUT7
SMALL
ANGLE
TEST
VCC
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 2, REV 4
PINNING.
Pin 1 : VCC
Pin 2 : SIN1P, Output buffer (coil 1 Logo1 )
Pin 3 : SIN1M, Output buffer (coil 1 Logo1 )
Pin 4 : VSS
Pin 5 : COS1P, Output buffer (coil 2 Logo1 )
Pin 6 : COS1M, Output buffer (coil 2 Logo1 )
Pin 7 : OUT5, Output buffer ( Logo 3 )
Pin 8 : OUT6, Output buffer ( Logo 4 )
Pin 9 : OUT7, Output buffer ( Logo 5 )
Pin 10 : VCC
Pin 11 : CS, Chip select ( Schmitt trigger with 300kΩ pull-down )
Pin 12 : SCLK, Serial clock ( Schmitt trigger )
Pin 13 : DIN, Data IN ( Scmitt trigger )
Pin 14 : TEST input. (1kΩ pull-down)
Pin 15 : RSTB, external reset ( Schmitt trigger )
Pin 16 : ERRB, Quadrant error output ( Open drain )
Pin 17 : VER, Quadrant verification inhibit
Pin 18 : OSCO, Crystal oscillator output
Pin 19 : OSCI, Crystal oscillator input
Pin 20 : COS2M, Output buffer (coil 2 Logo2 )
Pin 21 : COS2P, Output buffer (coil 2 Logo2 )
Pin 22 : VSS
Pin 23 : SIN2M, Output buffer (coil 1 Logo2 )
Pin 24 : SIN2P, Output buffer (coil 1 Logo2 )
fig.2 Pinning diagram.
VSS
RST
1
2
3
4
5
6
7
8
13
14
15
16
10407
SO24 PACKAGE
DIN
9
10
17
18
19
20
VER
SIN2P
SIN2M
ERR
COS2P
OSCI
COS2M
OSCO
VCC
SIN1P
SIN1M
VSS
COS1P
COS1M
CS
SCLK
TEST
OUT5
11
12
OUT7
OUT6
21
22
23
24
VCC
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 3, REV 4
OPERATION.
1) Logometers 360°
Immediately after a reset, the I.C. checks if there is any short-circuit or open circuit on each buffer driver
output (This test is not made for outputs 5,6 7). For this test, each buffer is held in a high impedance state
and large internal resistances (100kΩ) are sequentially connected on each pair of buffers (note : the actuator
coil must be connected on each bridge).
Three tests are done (see fig 3.)
condition test for :
Test 1 S1 closed, S2 open V1 = VSS
Test 2
S1 closed, S2 closed
V1 = VCC/2
Test 3 S1 open, S2 closed V1 = VCC
During the tests the pin ERRB (16) is at logic level 0. Then after the tests have been done ERRB stays at 0 if
one (or more) test fails or changes to high impedance state if every thing is OK.
These tests last approximately 4 ms with an oscillator clock frequency of 8 Mhz.
After the test all buffers are at VSS. The I.C. waits for the µP to send an angle/quadrant value and then
outputs a PWM signal on every buffer. Every logometer coil is connected in a bridge, so the current Icoil can
be either positive or negative. The total drop-out of a bridge is :
Vd = | VCC - Vcoil |
The four bridges have the same drop-out for the same current Icoil.
2) Logometers 90°
There are three different PWM outputs for Logo 3, Logo 4, Logo 5.
VCC
Coil
VSS
OUT1P
OUT1M
(HI Z)(HI Z)
fig 3. Test for short-circuits and open circuits.
R1
R2
S1
S2
V1
Coil
OUT1P OUT1M
fig 4. One bridge.
Icoil
Vcoil
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 4, REV 4
SERIAL LINK.
The µP outputs the serial clock SCLK, the chip select CS, the data DIN, and receives from the I.C.
the error status on pin ERRB(16).
The data sent by the µP are latched by the 10407 on the rising edge of SCLK.
The 10407 outputs an error status on pin ERRB (16) on the falling edge of SCLK.
When CS = "0" the serial interface of the 10407 is inactive. When CS goes HIGH the 10407 waits for a
START BIT and then reads the following 15 bits transmitted by the µP (see fig 4.)
The START BIT (D0) must be "1".
The following three bits (D1D2D3) are the operation code for the 10407 :
D1D2D3 = 001 ⇒ Writing request LOGO1
D1D2D3 = 011 ⇒ Writing request LOGO2
D1D2D3 = 100 ⇒ Writing request LOGO3
D1D2D3 = 110 ⇒ Writing request LOGO4
D1D2D3 = 101 ⇒ Writing request LOGO5
Any other codes are reserved for test and will have no effect in normal operation mode.
The following 10 bits (D4D5D6D7D8D9D10D11D12D13) are the value of the angle (D4 = MSB, D13 =
LSB).
The following two bits (D14D15) represent the quadrant (D14=MSB). Note : for Logo1 & 2 only.
SCLK
CS
1
10 BITS ANGLE
0 1 2 3456 7 8 9 1 0 11 12 13 1 4 15 16 17 18
z
quad
CODOP
"0" if error
z
DIN
ERRB
fig 5. Timing diagram serial link.
The 10407 outputs an error status on pin ERRB (16) on the falling edge of SCLK immediately
following the transmission of the quadrant LSB.
The pin 16 (ERRB) of the 10407 is driven low if there is no continuity between two consecutive
quadrant values sent (for logo1 or logo2). The data is valid till CS is high, then when CS goes low ERRB
returns to high impedance state and the error status is lost.
If the µP has detected an error, it is possible to send data again : the first bit "1" will initiate a new
transmission of 15 data bits.
On the HIGH to LOW transition of CS the values of angle and quadrant are stored into the internal
registers of the 10407 if :
- The µP sent a writing request,
- No quadrant error was detected by the 10407.
Otherwise new values of angle and quadrant are not taken into account by the 10407 and the
previous values are kept. The µP must initialize a new transmission with the 10407.
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 5, REV 4
It is possible to make the 10407 store all values of angles and quadrant even if there is an error
if the pin 17 (VER) is connected to GND.
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 6, REV 4
PWM GENERATION.
1) Logometers 360° ( Logo 1 and Logo 2 ) :
From the angle value received from the µP (range [0° - 89.8°]) the 10407 generates two PWM (9 bits
resolution) :
- the first one represents the sinus PWMSIN,
- the second one is the cosinus PWMCOS.
The 10407 uses a ROM 512x9 which contains the sinus of any angle in the range [0° - 89.8°]
(note that the LSB value of the angle is not used).
A value of angle greater than 90° is obtained using different quadrant values :
Q1 (D14D15 = 00) ⇒ 0° ≤ α < 90°
Q2 (D14D15 = 01) ⇒ 90° ≤ α < 180°
Q3 (D14D15 = 10) ⇒ 180° ≤ α < 270°
Q4 (D14D15 = 11) ⇒ 270° ≤ α < 360°
The PWM are switched to the outputs depending on the value of the quadrant :
QUADRANT
D14 D15
SIN1M
SIN1P
COS1M
COS1P
0 0
0
PWMSIN
0
PWMCOS
0 1 0 PWMCOS PWMSIN 0
1 0
PWMSIN
0
PWMCOS
0
1 1 PWMCOS 0 0 PWMSIN
Logometer 1 is driven by outputs SIN1M/P COS1M/P,
Logometer 2 is driven by outputs SIN2M/P COS2M/P.
The PWM frequency is given by :
F
PWM
= F
OSC
/ 512 (FOSC = Crystal oscillator frequency)
2) Logometers 90° (Logo1, Logo2, Logo3) :
The value transmitted by the µP is directly the PWM value (D4D5D6D7D8D9D10D11D12), D4 is
MSB and D12 LSB. D13 and Quad bits (D14,D15) are not used.
Q1 ++ Q2 -+
Q3 --
270
180
90
0
Q4 +-
αα
α
α
fig 6. Quadrants and PWM sign.
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 7, REV 4
ABSOLUTE MAXIMUM RATINGS.
parameter symbol min. max. unit
Storage temperature range
Operating temperature range
Supply voltage range (pin 1)
Input voltage range
Tstg
Tamb
VCC
VI
-40
-40
-0.3
-0.3
+150
+85
14.0
VCC + 0.3
°C
°C
V
V
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 8, REV 4
ELECTRICAL CHARACTERISTICS.
Tamb = -40 to 85°C, VCC = 5 V to 12 V unless otherwise specified.
parameter conditions symbol min. typ. max. unit
Supply current
Inputs at VCC or VSS
No loads on outputs
VCC=8.5V T=25°C
I
CC
5.5
mA
Maximum power dissipation
P
Dmax
620
mW
Inputs
Input capacitance Cin 10 pF
Pin 11
Pull-down resistance Rpd 125 750 k
Ω
input voltage LOW VIL -0.3 1 V
input voltage HIGH VIH 4 VCC+0.3 V
Hysteresis VCC = 8.5 V V
HYS
0.5 2.5 V
Leakage current
pin at V
CC
or V
SS
I
L
-
1
1
µA
Pin 12,13,14,15,17
input voltage LOW
V
IL
-
0.3
1
V
input voltage HIGH VIH 4 VCC+0.3 V
Hysteresis VCC = 8.5 V V
HYS
0.5 2.5 V
Leakage current (p12,15,17) pin at VCC or VSS IL -1 1 µA
Pull-down resistance (p14) Rpd 0.8 1.5 k
Ω
Outputs
Pin 16
Low level output voltage I
OUT
< 500 µA V
OL
0.3 V
High level output leakage
current
V
OUT
= V
CC
I
LKG
10
µA
Pin 2,3,5,6,20,21,23,24
Drop-out voltage for each
pair of buffers
V
CC
= 8.5V, Tamb = 25°C
I
coil
= 30 mA, see fig. 4
Vd 1.6 V
Mismatch of drop
-
out
voltage
V
CC
= 8.5V, Tamb = 25°C
I
coil
= 30 mA, see fig. 4
∆
Vd
± 50
mV
Pin 7,8,9
Output voltage low
VCC = 8.5V, Tamb = 25°C
I
sink
= 40mA
V
OL
0.6
1.0
V
Output voltage high
VCC = 8.5V, Tamb=25°C
I
source
= 40mA
V
OH
6.8
7.8
V
Oscillator
Pin 18,19
input pin capacitance
Cin
10
20
pF
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 9, REV 4
clock frequency
f
clk
8 MHz
AC ELECTRICAL CHARACTERISTICS.
Parameter Value unit
Maximum SCLK input frequency
Setup time DIN to SCLK rising
Hold time DIN to SCLK rising
Setup time CS high to SCLK rising
500
100
100
100
kHz
ns
ns
ns
APPLICATION SCHEMATIC.
VSS
RST
1
2
3
4
5
6
11
12
15
16
17
18
19
20
DIN
VCC
13
10
21
22
23
24
COS2P
COS2M
ERR
COS1M OSCI
COS1P
OSCO
VCC
SIN1P
SIN1M
VSS
SIN2M
SIN2P
CS
SCLK
µ
µµ
µ
P
VCC
LOGO2
Rpup
Fig 7. Typical application
+5V
8MHz *
VER
* Load capacitances are internal
OUT6
8
9
TEST
OUT5
14
7
OUT7
LOGO5 LOGO4
LOGO3
LOGO1
TYPE 10407
ACTUATOR DRIVER WITH SERIAL LINK
STANDARD PRODUCT july 9, 1997 PAGE 10, REV 4
Disclaimer
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of
Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth
herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change
specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is
necessary to check with Melexis for current information. This product is intended for use in normal commercial
applications. Applications requiring extended temperature range, unusual environmental requirements, or high
reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not
recommended without additional processing by Melexis for each application.
The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to
recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of
profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in
connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or
liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services.
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