Description
The PCA9532 is a 16-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.
Features
- 16 LED drivers (on, off, flashing at a programmable rate).
- 2 selectable, fully programmable blink rates (frequency and duty
cycle) between 0.625 and 160 Hz (6.4 seconds and 6.25 milliseconds).
- 256 brightness steps.
- 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.
PCA9532_PhilipsSemiconductors.pdf
