STK682-010-E

No.A2252-8/20

(5) Forward / reverse switching function

CW/CCW

Operation

L

CW

H

CCW

CLK

CW / CCW

A phase output

B phase output

Excitation

position

(1)

(2)

(3)

(4)

(5)

(6) (5)

(4) (3)

(4) (5)

CW mode

CW mode

CCW mode

The internal D/A converter proceeds by a bit on the rising edge of the step signal input to the CLK pin. In addition,

CW and CCW mode are switched by CW and CCW pin setting.

In CW mode, the B phase current is delayed by 90

 relative to the A phase current. In CCW mode, the B phase

current is advanced by 90

 relative to the A phase current.

(6) Output enable function

When the ENABLE pin is set Low, the output is forced OFF and goes to high impedance. However, the internal logic

circuits are operating, so the excitation position proceeds when the CLK is input. Therefore, when ENABLE pin is

returned to High, the output level conforms to the excitation position proceeded by the CLK input.

CLK

ENABLE

A phase output

B phase output

MO

High impedance output

0%