Datasheet

Datasheet

5/22

TSZ02201-0M2M0BC12090-1-2

© 2013 ROHM Co., Ltd. All rights reserved.

18.Apr.2013 Rev.002

www.rohm.com

TSZ22111・15・001

BU24038GW

●Description of Blocks

Stepping Motor Driver (1ch-6ch Driver)

Built-in stepping motor driver of PWM driving type.

Maximum 3 stepping motors can be driven independently.

Built-in voltage feedback circuit of D-class type.

3ch/4ch drivers can also drive independently for DC motor or voice coil motor.

(1) Control

It corresponds to both Clock IN and Autonomous control.

(ⅰ)Clock IN Control

Set the resistors for the stepping motor control.

The stepping motor is rotated and synchronized with the input clock in the STATE pin.

It is possible to select the mode of stepping motor control from μ-step, 1-2 phase excitation, 2 phase excitation and

the number of edge for electrical angle cycle from 4, 8, 32, 64, 128, 256, 512 or 1024.

(ⅱ)Autonomous Control

The stepping motor is rotated by setting the resistors for the stepping motor control.

The state of rotation command (executing:1, finished:0), Cache resistor, and motor position are the output from the

serial output (SOUT pin). Also, the signal (MO output) which is synchronized with the motor rotation is the output from

STATE pin.

It is possible to select the mode of stepping motor control from μ-step (1024 portion), 1-2 phase excitation and

2 phase excitation

Built-in Cache resistors.

Cache resisters enable the setting of subsequent process while the motor is in operation. Through these registers,

operations are done continuously.

SIN wave

Control

Logic

PWM

Control

Logic

SIF

H.B.

H.B.

Host

ON/OFF

Direction

Torque

（Speed･Amount）

STATE

CSB

SCLK

SDATA

3

STM

SIN wave

Control

Logic

PWM

Control

Logic

SIF

STM

Control

Logic

H.B.

H.B.

Host

ON/OFF

Direction

Speed

Torque

Amount

State

STATE

CSB

SCLK

SDATA

3

STM

Position

SOUT

STM

Control

Logic