A3982_13 Datasheet, PDF (6/11 Pages) Allegro MicroSystems – DMOS Stepper Motor Driver with Translator

A3982
DMOS Stepper Motor Driver with Translator
t_A
t_B
STEP
MS1,
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. Stepping Resolution Truth Table
MS1 Step Resolution Excitation Mode
L Full Step
2 Phase
H Half Step
1-2 Phase
Allegro MicroSystems, LLC
6
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com