A3904 データシートの表示（PDF） - Allegro MicroSystems
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A3904 Datasheet PDF : 9 Pages
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A3904
Low Voltage Voice Coil Motor Driver
I2C Interface Timing Diagram
tsuSTA thdSTA
tsuDAT
thdDAT
tsuSTO
tBUF
SDA
SCL
tLOW
tHIGH
Write Register Bit Definition and Timing Diagram
Start
Address
Acknowledge
Write (from A3904)
Control Data
Acknowledge
(from A3904) Stop
SDA
0 0 0 1 1 x x 0 AK D7 D6 D5 D4 D3 D2 D1 D0 AK
SCL
123456789
I2C Control Register Bit Definition
Bit
Name
0
D0
1
D1
2
D2
3
D3
4
D4
5
D5
6
D6
7
D7
A3904 Slave Address Bit Definition
Bit
0
1
2
3
4
5
0
0
0
1
1
x
Function
DAC LSB
DAC MSB
Operation
6
7
1
X
0
Read
Write
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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