PCA9500 查看數據表（PDF） - Philips Electronics

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PCA9500

8-bit I2C and SMBus I/O port with 2-kbit EEPROM

Philips Electronics 

Philips Semiconductors

8-bit I2C and SMBus I/O port with 2-kbit EEPROM

Product data sheet

PCA9500

FEATURES

• 8 general purpose input/output expander/collector

• Drop in replacement for PCF8574 with integrated 2-kbit EEPROM

• Internal 256 × 8 EEPROM

• Self timed write cycle

• 4 byte page write operation

• I2C and SMBus interface logic

• Internal power-on reset

• Noise filter on SCL/SDA inputs

• 3 address pins allowing up to 8 devices on the I2C/SMBus

• No glitch on power-up

• Supports hot insertion

• Power-up with all channels configured as inputs

• Low standby current

• Operating power supply voltage range of 2.5 V to 3.6 V

• 5 V tolerant inputs/outputs

• 0 kHz to 400 kHz clock frequency

• ESD protection exceeds 2000 V HBM per JESD22-A114,

200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

• Latch-up testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

• Package offerred: SO16, TSSOP16, HVQFN16

DESCRIPTION

The PCA9500 is an 8-bit I/O expander with an on-board 2-kbit

EEPROM.

The I/O expander’s eight quasi bidirectional data pins can be

independently assigned as inputs or outputs to monitor board level

status or activate indicator devices such as LEDs. The system

master writes to the I/O configuation bits in the same way as for the

PCF8574. The data for each Input or Output is kept in the

corresponding Input or Output register. The system master can read

all registers.

The EEPROM can be used to store error codes or board

manufacturing data for read-back by application software for

diagnostic purposes and is included in the I/O expander package.

The PCA9500 has three address pins with internal pull-up resistors

allowing up to 8 devices to share the common two-wire I2C software

protocol serial data bus. The fixed GPIO I2C address is the same as

the PCF8574 and the fixed EEPROM I2C address is the same as

the PCF8582C-2, so the PCA9500 appears as two separate devices

to the bus master.

The PCA9500 supports hot insertion to facilitate usage in removable

cards on backplane systems.

The PCA9501 is an alternative to the functionally similar PCA9500

for systems where a higher number of devices are required to share

the same I2C-bus or an interrupt output is required.

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

ORDER CODE

TOPSIDE MARK

DRAWING NUMBER

16-Pin Plastic SO (wide)

–40 °C to +85 °C

PCA9500D

PCA9500D

16-Pin Plastic TSSOP

–40 °C to +85 °C

PCA9500PW

PCA9500

16-Pin Plastic HVQFN

–40 °C to +85 °C

PCA9500BS

9500

Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.

SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent.

I2C is a trademark of Philips Semiconductors Corporation.

SOT162-1

SOT403-1

SOT629-1

2004 Sep 30

2

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