Datasheet Details
| Part number | PCA9500 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 227.73 KB |
| Description | 8-bit I2C and SMBus I/O port |
| Datasheet |
 PCA9500 Datasheet
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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.
Key Features
- Eight 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-bus and SMBus interface logic.
- Internal power-on reset.
- Noise filter on SCL/SDA inputs.
- Three address pins allowing up to eight devices on the I2C-bus/SMBus.
- No glitch on power-up.
- Supports hot insertion.
- Power-up with all channels configu.