SM8150A

SEIKO NPC CORPORATION —8

Parameter

Pin

Symbol

Condition

Rating

Unit

min

typ

max

SCL clock frequency

SCL

−−

400

kHz

SCL hold time

SCL, SDA

0.6

−−

µs

SCL L-level pulsewidth

SCL

1.3

−−

µs

SCL H-level pulsewidth

0.6

−−

µs

SCL setup time

SCL, SDA

0.6

−−

µs

SDA data hold time

0.05

−

0.9

µs

SDA data setup time

100

−−

ns

Rise time

−−

300

ns

Fall time

−−

300

ns

SCL setup time

0.6

−−

µs

Bus free time

1.3

−−

µs

Capacitive load for each bus line

−−

400

pF

Note. S: START condition, Sr: repeated START condition, P: STOP condition

After a START condition, the slave address should be sent, and a data transfer should be terminated by

a STOP condition.

SCL

SDA

SSr

P

SCL

1

SDA

Start

Stop

1st byte: Slave address

2nd byte: Control data

Nth byte: Control data

ACK

M3

M2

D2

D1

ACK

M3

M2

D2

D1

ACK

27

8

9

1

2

7

8

9

1

2

7

8

9