A4984 データシートの表示（PDF） - Allegro MicroSystems

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A4984

DMOS Microstepping Driver with Translator And Overcurrent Protection

Allegro MicroSystems 

A4984

DMOS Microstepping Driver with Translator

And Overcurrent Protection

tA

tB

STEP

MSx

RESET, or DIR

tC

tD

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

tA

1

μs

tB

1

μs

tC

200

ns

tD

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.

6

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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