a4983 Allegro MicroSystems, Inc., a4983 Datasheet - Page 6

• Manufacturer Part Number: a4983
• Description: Dmos Microstepping Driver With Translator
• Manufacturer: Allegro MicroSystems, Inc.

A4983
Figure 1. Logic Interface Timing Diagram
MS1, MS2, MS3,
RESET, or DIR
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
H
L
L
MS2
Time Duration
DMOS Microstepping Driver with Translator
H
H
H
L
L
MS3
t
H
C
L
L
L
L
Full Step
Half Step
Quarter Step
Eighth Step
Sixteenth Step
Microstep Resolution
t
D
t
A
Symbol
t
t
t
t
A
B
C
D
2 Phase
1-2 Phase
W1-2 Phase
2W1-2 Phase
4W1-2 Phase
Excitation Mode
Typ.
200
200
1
1
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Unit
μs
μs
ns
ns
t
B
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