PCA9552 Datasheet | NXP Semiconductors

16-bit I2C-bus LED driver with programmable blink rates Rev. 5.1 - 25 May 2023 Product data sheet 1 General 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. 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 controller must send repeated mands to turn the LED on and off. This greatly increases the amount of traffic on the I2C-bus and uses up one of the controller's timers. The PCA9552 LED blinker instead...