PCA9500

General 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.

Features

• 8 general purpose input/output expander/collector
• Drop in replacement for PCF8574 with integrated 2-kbit EEPROM
• Internal 256 x 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

Products/packages

Pricing/ordering/availability

Applications

Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
PCI analog/DVB-T stereo TV receiver
Nexperia UMA-enabled GSM/GPRS/EDGE VAS system solution (6100)
Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality

Block diagrams/pinning

Technical documents

Application Notes

AN10216_1; I2C manual (27-Mar-03)

AN10441_1; Level shifting techniques in I²C-bus design (20-Jun-07)

AN469_2; I2C/SMBus general purpose I/O expanders (20-Jan-05)

Support Documents

75015669; Continuous innovation. Timeless lifespan. (01-Sep-06)

design_con_2003_tecforum_i2c_bus_overview; DesignCon 2003 TecForum I 2 C Bus Overview (2003-01-27)

75013239; I 2 C Logic Selection Guide (2005-01-12)

75011212; I2C 2002-1A Evaluation Board Kit (01-Mar-03)

75012744; I2C Bus Solutions 2004 (2004-02-01)

75009896; I2C Bus Solutions, Typical I2C Bus Arrangement (2002-06-07)

UM10206_1; I2C Demonstration Board 2005-1 Quick Start Guide (13-Jun-06)

philips_i2c_handbook; I2C Handbook (2004-01-01)

UM10204_3; I2C-bus specification and user manual (26-Jun-07)

75011779; NEW MULTIMARKET PRODUCTS QUARTERLY HIGHLIGHTS (2003-08-01)

75016018; NXP 8-bit I2C/SMBus GPIO expanders with 2-K EEPROM PCA9500/01 (2007-06-01)

pca9500; PCA9500 8-bit I2C & SMBus I/O port w/ 2K EEPROM (renamed from PTN3500A) (2002-05-06)

75009897; PCA9500/PCA9501 (2002-06-01)

75014395; Your connection to I 2 C,UART,CAN,and USB Connecting with Philips Wired Connectivity (2005-04-01)

Parametrics/similar products

Similar products

PCA9500 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

Print / Email

• Print this information
• Email this information

Disclaimer

The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.

The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.

As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.

http://www.philips.semiconductors.com use http://www.nxp.com

http://www.semiconductors.philips.com use http://www.nxp.com (Internet)

sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)

The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-

If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.