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A3984 Datasheet(PDF) 5 Page - Allegro MicroSystems

Part No. A3984
Description  DMOS Microstepping Driver with Translator
Download  13 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3984 Datasheet(HTML) 5 Page - Allegro MicroSystems

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26184.30A
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
A3984
DMOS Microstepping Driver with Translator
Figure 1. Logic Interface Timing Diagram
STEP
t A
t D
t C
MS1, MS2,
RESET, or DIR
t B
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
Sixteenth Step
4W1-2 Phase
Time Duration
Symbol
Typ.
Unit
STEP minimum, HIGH pulse width
tA
1
μs
STEP minimum, LOW pulse width
tB
1
μs
Setup time, input change to STEP
tC
200
ns
Hold time, input change to STEP
tD
200
ns


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