124

ICs

1-2-1 2-Phase Stepper Motor Unipolar Driver ICs

■Absolute Maximum Ratings

Parameter

Symbol

Ratings

Unit

Supply Voltage

–0.5 to 7

V

Input Voltage

V

Input Current

±10

mA

Output Voltage

V

Output Current

±15

mA

Power Dissipation

200

mW

Operating Temperature

–20 to +85

°C

Storage Temperature

–40 to +150

°C

Parameter

Symbol

Conditions

Ratings

Unit

min.

typ.

max.

Supply Voltage

4.5

5.5

V

Supply Current

0.35

0.45

mA

Output Voltage

±3mA

4.5

V

0.4

Input Current

±1

µA

Input Voltage

3.5

5

V

–0.3

1.5

Input Hysteresis Voltage

1

V

Input Capacity

5

10

pF

Internal Oscillation Frequency

F

1.5

MHz

Propagation Delay Time

See Fig.1.

50

100

ns

430

550

Output Voltage

20

ns

Rise and Fall Time

See Fig.2.

20

CLOCK IN Terminal

4.5

µs

Input Clock Time

0.5

Reset Setting Time (A)

ts

RFrom/To CLOCK_IN

↑

100

ns

Stabilization Time After Reset Input (B)

tps

R

See Fig.3.

Signal Setting Time (C)

ts

SFrom/To CLOCK_IN

↑

100

ns

Stabilization Time After Signal Input (D)

tps

S

See Fig.3.

°C)

■Electrical Characteristics

CLOCK_IN

CLOCK_OUT

DATA

STROBE

1/F

1/F

CLOCK_OUT

DATA

STROBE

90%

10%

Tr

Tf

CLOCK_IN

RESET

MO

MS1

MS2

CW/CCW

VC

A

B

C

DC

D

C

D

C

D

Excitation changeover point

VC changeover occurs only while CLOCK-IN level is L.

Fig. 1

Fig. 3 Timing conditions

Fig.2

°C)

■Typical Connection Diagram

5V

16

MPU

VDD

RESET

CLOCK_IN

CLOCK

_OUT

CLOCK_A

CLOCK_B

STROBE_A

SLA7042M

SLA7044M

STROBE_B

DATA_A

DATA_B

STROBE

DATA_A

DATA_B

CW/CCW

MS1

MS2

VC

MO

NC

GND

CP1

CP2

1

14

13

11

10

2

3

6

7

15

12

NC

NC

NC

Rs

Rs

85

4

9

P

G

0

0

1

M

Serial Signal Generator ICs for SLA7042M and SLA7044M

PG001M