PCA9554AN 查看數據表（PDF） - Philips Electronics

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PCA9554AN

8-bit I²C and SMBus I/O port with interrupt

Philips Electronics 

Philips Semiconductors

8-bit I2C and SMBus I/O port with interrupt

Product data sheet

PCA9554/PCA9554A

BLOCK DIAGRAM

A0

A1

A2

SCL

SDA

VDD

VSS

INPUT

FILTER

POWER-ON

RESET

I2C/SMBUS

CONTROL

8-BIT

WRITE pulse

INPUT/

OUTPUT

PORTS

READ pulse

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

VCC

LP

FILTER

NOTE: ALL I/Os ARE SET TO INPUTS AT RESET

Figure 3. Block diagram

INT

SU01411

2004 Sep 30

4

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