PCA9544 View Datasheet(PDF) - Philips Electronics

Part Name

Description

View to exact match

PCA9544

4-channel I²C multiplexer and interrupt controller

Philips Electronics 

Philips Semiconductors

4-channel I2C multiplexer and interrupt controller

Product specification

PCA9544

SDA

X XX X X X X XX X XX X XXX

SCL

12 34 5 67 89 1234 5 67 89

SLAVE ADDRESS

CONTROL REGISTER

SDA S 1 1 1 0 A2 A1 A0 0 A INT3 INT2 INT1 INT0 X B2 B1 B0 A P

start condition

R/W acknowledge

from slave

acknowledge

from slave

PREVIOUS CHANNEL

Figure 6. WRITE control register

NEW CHANNEL

tpv

SW00377

SLAVE ADDRESS

CONTROL REGISTER

last byte

SDA S 1 1 1 0 A2 A1 A0 1 A INT3 INT2 INT1 INT0 X B2 B1 B0 NA P

start condition

R/W acknowledge

from slave

Figure 7. READ control register

no acknowledge

from master

stop condition

SW00378

1999 Oct 07

7

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