A3980
Automotive DMOS Microstepping Driver
with Translator
Logic Interface Timing Diagram
t
STPH
STEP
t
STPL
t
SU
MS1, MS2,
or DIR
t
H
t
EN
SLEEP
Table 1. Microstep Resolution Truth Table
MS1
L
H
L
H
MS2
L
L
H
H
Microstep Resolution
Full Step
Half Step
Eighth Step
Sixteenth Step
Table 2. Fault Report by Fault Flags
FF1
L
H
L
H
FF2
L
L
H
H
Fault
UVLO, OVLO, Overtemperature,
Low Load Current, or Shorted Load
Short to Ground
Short to Supply
None
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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