Description
The PCA9552 LED blinker blinks LEDs in I2C-bus and SMBus applications where it is necessary to limit bus traffic or free up the I2C-bus controller's (MCU, MPU, DSP, chip set, etc.) timer.
Features
- 16 LED drivers (on, off, flashing at a programmable rate).
- 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.172 Hz and 44 Hz (5.82
seconds and 0.023 seconds).
- Input/outputs not used as LED drivers can be used as regular GPIOs.
- Internal oscillator requires no external components.
- I2C-bus interface logic compatible with SMBus.
- Internal power-on reset.
- Noise filter on SCL/SDA inputs.
- Active LOW.
PCA9552_PhilipsSemiconductors.pdf
