A3906 データシートの表示（PDF） - Allegro MicroSystems
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A3906 Datasheet PDF : 10 Pages
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A3906
ILOAD
Low Voltage Stepper and Single/Dual DC Motor Driver
Fault Timing Diagram
ITRIP
FLx
Fault Asserted
tFLx
Fault Asserted
NOTE: Timer resets after each reset of the PWM latch.
tFLx
Fault Asserted
Control Logic
DC Motor Operation
IN1
IN2
IN3
0
0
0
1
0
1
0
1
0
1
1
1
IN4 OUT1A OUT1B OUT2A OUT2B
0
Off
Off
Off
Off
0
High
Low
High
Low
1
Low
High
Low
High
1
Low
Low
Low
Low
Function
Disabled
Forward
Reverse
Brake
Stepper Motor Operation
IN1
IN2
IN3
IN4 OUT1A OUT1B OUT2A OUT2B
Function
0
0
0
0
Off
Off
Off
Off
Disabled
Disabled
1
0
1
0
High
Low
High
Low
Full Step 1
½ Step 1
0
0
1
0
Off
Off
High
Low
–
½ Step 2
0
1
1
0
Low
High
High
Low
Full Step 2
½ Step 3
0
1
0
0
Low
High
Off
Off
–
½ Step 4
0
1
0
1
Low
High
Low
High
Full Step 3
½ Step 5
0
0
0
1
Off
Off
Low
High
–
½ Step 6
1
0
0
1
High
Low
Low
High
Full Step 4
½ Step 7
1
0
0
0
High
Low
Off
Off
–
½ Step 8
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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