STK672-610

No. A0756-4/19

Block Diagram

Sample Application Circuit

*: C03 through C08 represents a capacitor recommended for use with a recommended value of 1,000pF.

RESETB

Vref

A

AB

B

BB

P.G2

24V

10

μF

STK672-610

9

12

10

17

13

14

19

4

5

3

1

2

2-phase stepping motor driver

R01

R02

P.GND

C01

at least 100

μF

VCC

R04

10k

Ω

R03

5.0V

C02

D1

CWB

MODE2

MODE1

CLOCK

5.0V

P.G1

6

100

Ω

15

ENABLE

C03

C04

C05

C06

C07

C08

VDD (5V)

16

18

VSS

S.G

Chopper

circuit

Phase

excitation

signal

generator

Excitation

mode

selection

Phase

advance

counter

P.G2

VSS

S.G

CI

BI

AI

FBB

FBO

FAB

FAO

BB

B

AB

A

P.G1

F1

F2

F3

F4

R1

R2

VDD

R3

3.9k

Ω/1%

R4

1.0k

Ω/1%

VDD=5V

MODE1

CLOCK

CWB

ENABLE

VSS

Vref

N.C

MODE2

RESETB

S.G

N.C

N.C

19

18

16

15

14

13

12

17

11

10

9

8

7

6

5

4

1

2

3