A3984 Allegro MicroSystems, Inc., A3984 Datasheet - Page 5

• Manufacturer Part Number: A3984
• Description: Dmos Microstepping Driver With Translator
• Manufacturer: Allegro MicroSystems, Inc.

26184.30A
Figure 1. Logic Interface Timing Diagram
RESET, or DIR
MS1, MS2,
STEP
STEP minimum, HIGH pulse width
STEP minimum, LOW pulse width
Setup time, input change to STEP
Hold time, input change to STEP
Table 1. Microstep Resolution Truth Table
MS1
H
H
L
L
Time Duration
MS2
H
H
t
L
L
C
Full Step
Half Step
Quarter Step
Sixteenth Step
Microstep Resolution
DMOS Microstepping Driver with Translator
t
D
t
A
Symbol
t
t
t
t
A
B
C
D
2 Phase
1-2 Phase
W1-2 Phase
4W1-2 Phase
Excitation Mode
Typ.
200
200
1
1
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
t
Unit
B
μs
μs
ns
ns
A3984
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