A3983_08 Datasheet, PDF (4/11 Pages) Allegro MicroSystems – DMOS Microstepping Driver with Translator

A3983
DMOS Microstepping Driver with Translator
t_A
t_B
STEP
MS1, MS2,
RESET, or DIR
t_C
t_D
Time Duration
Symbol Typ.
Unit
STEP minimum, HIGH pulse width
STEP minimum, LOW pulse width
Setup time, input change to STEP
Hold time, input change to STEP
t_A
1
μs
t_B
1
μs
t_C
200
ns
t_D
200
ns
Figure 1. Logic Interface Timing Diagram
Table 1. Microstep Resolution Truth Table
MS1 MS2 Microstep Resolution Excitation Mode
L
L Full Step
2 Phase
H
L Half Step
1-2 Phase
L H Quarter Step
W1-2 Phase
H H Eighth Step
2W1-2 Phase
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com