The PCA9553 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.
| Part Number | Manufacturer | Description |
|---|---|---|
| PCA9555 | Texas Instruments | Remote 16-bit I2C and SMBus I/O Expander |
| PCA9557 | Texas Instruments | Remote 8-Bit I2C and SMBus Low-Power I/O Expander |
| PCA9554 | Texas Instruments | Remote 8-Bit I2C AND SMBus I/O Expander |
| PCA9554A | Texas Instruments | Remote 8-Bit I2C and SMBus I/O Expander |
