Datasheet4U Logo Datasheet4U.com

PCA9501 - 8-bit I2C and SMBus I/O port

General Description

The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.

The I/O expandable 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.

Key Features

  • I 8 general purpose input/output expander/collector I Replacement for PCF8574 with integrated 2-kbit EEPROM I Internal 256 × 8 EEPROM I Self timed write cycle (5 ms typical) I 16 byte page write operation I I2C-bus and SMBus interface logic I Internal power-on reset I Noise filter on SCL/SDA inputs I Active LOW interrupt output I 6 address pins allowing up to 64 devices on the I2C-bus/SMBus I No glitch on power-up I Supports hot insertion I Power-up with all channels configured as inputs NXP Semi.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
PCA9502 8-bit I/O expander NXP Semiconductors
PCA9506 40-bit I2C-bus I/O port NXP Semiconductors
PCA9507 2-wire serial bus extender NXP Semiconductors
PCA9510A Hot swappable I2C-bus and SMBus bus buffer NXP Semiconductors
PCA9511A Hot swappable I2C-bus and SMBus bus buffer NXP Semiconductors

Other Datasheets by NXP Semiconductors

Part Number Description
PCA9500 8-bit I2C and SMBus I/O port
PCA9504A Glue chip 4
PCA9505 40-bit I2C-bus I/O port
PCA9508 Hot swappable level translating I2C-bus repeater
PCA9509 Level translating I2C-bus/SMBus repeater

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PCA9501 8-bit I2C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins Rev. 04 — 10 February 2009 Product data sheet 1. General description The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM. The I/O expandable 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 configuration 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.