Datasheet Details
| Part number | PCA9551 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 138.05 KB |
| Description | 8-bit I2C LED driver |
| Datasheet | PCA9551_PhilipsSemiconductors.pdf |
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Overview: PCA9551 8-bit I2C-bus LED driver with programmable blink rates Rev. 08 — 31 July 2008 Product data sheet 1.
| Part number | PCA9551 |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 138.05 KB |
| Description | 8-bit I2C LED driver |
| Datasheet | PCA9551_PhilipsSemiconductors.pdf |
|
|
|
The PCA9551 LED blinker blinks LEDs in I2C-bus and SMBus applications where it is necessary to limit bus traffic or free up the I2C-bus master's (MCU, MPU, DSP, chip set, etc.) timer.
The uniqueness of this device is the internal oscillator with two programmable blink rates.
To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the bus master must send repeated mands to turn the LED on and off.
| Part Number | Description |
|---|---|
| PCA9550 | 2-bit I2C LED driver |
| PCA9552 | 16-bit I2C LED driver |
| PCA9553 | 4-bit I2C LED driver |
| PCA9554 | 8-bit I2C and SMBus I/O port |
| PCA9554A | 8-bit I2C and SMBus I/O port |
| PCA9555 | 16-bit I2C-bus and SMBus I/O port |
| PCA9555A | Low-voltage 16-bit I2C-bus I/O port |
| PCA9556 | Octal SMBus Registered Interface |
| PCA9557 | 8-bit I2C and SMBus I/0 port with reset |
| PCA9559 | 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM |