LV8080LP

No.A0649-5/8

Continued from preceding page.

Pin No.

Pin Name

Description

Equivalent Circuit

14

PI/PR

A switch, with NMOS open-drain output, used to turn

on/off the power supply of the position sensor unit. When

using this switch, connect the position sensor unit

between this pin and the VCC pin.

On/off control of this switch is accomplished by CONT

pin. Setting the CONT pin high turns on the switch.

6

VCC

GND

15

VCC

Power supply pin

Timing Chart

(1) Stepper motor timing chart

Timing chart for 2-phase drive

(2) Timing chart for 1-2 phase drive (Slow decay mode)

Channel 1

output mode

IN1

IN3

IIN2

IN4

Forward

Standby

Standby

Reverse

Forward

Standby

Standby

Forward

Reverse

Forward

Channel 2

output mode

Channel 1

output mode

IN1

IN3

IIN2

IN4

Channel 2

output mode

Forward

Reverse

Forward

Reverse

Forward Brake

Brake

Brake

Brake

Standby

Standby

Reverse

Forward

Standby

Standby

Forward

Reverse

Forward