PCA9558 datasheet(3/18 Pages) PHILIPS

Part #	PCA9558

Description	8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM and 2 k bit EEPROM

PDF	18 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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3 / 18 page

Philips Semiconductors

Product data

PCA9558

8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit

latched 6-bit I2C EEPROM and 2 k bit EEPROM

2002 May 24

PIN DESCRIPTION

PIN NUMBER

SYMBOL

FUNCTION

SCL

Serial I2C bus clock

SDA

Serial bi-directional I2C bus data

I/O_OUT_LOW

Active-LOW control forces all GPIO to logic 0 outputs

A0 Address

5–9

MUX_IN A–E

External inputs to multiplexer

GND

Ground

11–18

I/O[0–7]

General purpose Input/Output 0 through 7 (open drain outputs)

MUX_SELECT

Active-LOW Select of MUX_IN inputs or EEPROM contents for MUX_OUT outputs

20–24

MUX_OUT E–A

Open drain multiplexed outputs

NON_MUXED_OUT

Open drain outputs from non-volatile memory

MUX_OUT_LOW

Active-LOW control forces all MUX outputs to logic 0

Active-HIGH EEPROM write protect

VDD

Power supply : +3.0 to +3.6 V

PCA9558 Datasheet(PDF) 3 Page - NXP Semiconductors