PCA9539A 查看數據表（PDF） - NXP Semiconductors.

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PCA9539A

Low-voltage 16-bit I2C-bus I/O port with interrupt and reset

NXP Semiconductors. 

NXP Semiconductors

4. Block diagram

PCA9539A

Low voltage 16-bit I2C-bus I/O port with interrupt and reset

PCA9539A

A0

A1

SCL

SDA

VDD

RESET

VSS

INPUT

FILTER

POWER-ON

RESET

8-bit

write pulse

I2C-BUS/SMBus

CONTROL

read pulse

INPUT/

OUTPUT

PORTS

8-bit

write pulse

read pulse

INPUT/

OUTPUT

PORTS

LP

FILTER

P1_0

P1_1

P1_2

P1_3

P1_4

P1_5

P1_6

P1_7

P0_0

P0_1

P0_2

P0_3

P0_4

P0_5

P0_6

P0_7

VDD

INT

Remark: All I/Os are set to inputs at reset.

Fig 1. Block diagram of PCA9539A

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PCA9539A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 26 September 2012

© NXP B.V. 2012. All rights reserved.

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