PCA9555DB 查看數據表（PDF） - Philips Electronics

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PCA9555DB

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

Philips Electronics 

Philips Semiconductors

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

Product data sheet

PCA9555

TYPICAL APPLICATION

VDD

VDD

10 kΩ 10 kΩ 10 kΩ

MASTER

CONTROLLER

SCL

SDA

INT

GND

VDD

SCL

SDA

INT

2 kΩ

I/O0.0

I/O0.1

I/O0.2

I/O0.3

I/O0.4

I/O0.5

PCA9555

I/O0.6

I/O0.7

I/O1.0

I/O1.1

A1

I/O1.2

I/O1.3

A0

I/O1.4

I/O1.5

I/O1.6

VSS I/O1.7

SUBSYSTEM 1

(e.g. temp

sensor)

INT

SUBSYSTEM 2

(e.g. counter)

RESET

A

ALARM

SUBSYSTEM 3

(e.g. alarm system)

ENABLE

B

VDD

Controlled Switch

(e.g. CBT device)

10 DIGIT

NUMERIC

KEYPAD

NOTE: Device address configured as 1110100 for this example

I/O0.0, I/O0.2, I/O0.3, configured as outputs

I/O0.1, I/O0.4, I/O0.5, configured as inputs

I/O0.6, I/O0.7, and I/O1.0 to I/O1.7 configured as inputs

Figure 11. Typical application.

SW02284

2004 Sep 30

11

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