PCA9552PW,112 Datasheet PDF - NXP

The PCA9552PW,112 is a 16-bit I²C-bus LED Driver with programmable blink rates. The uniqueness of this device is the internal oscillator with two programmable blink rates. To blink LEDs using normal I/O expanders, the bus master must send repeated commands to turn the LED on and off. This greatly increases the amount of traffic on the I²C-bus and uses up one of the master"s timers. The LED blinker instead requires only the initial setup command to program BLINK RATE 1 and BLINK RATE 2 (that is, the frequency and duty cycle) for each individual output.

● 16 LED drivers

● Input/outputs not used as LED drivers can be used as regular GPIOs

● Internal oscillator requires no external components

● Internal power-on reset

● Noise filter on SCL/SDA inputs

● Active low reset input

● 16 Open-drain outputs directly drive LEDs to 25mA

● Edge rate control on outputs

● No glitch on power-up

● Supports hot insertion

●ESD sensitive device, take proper precaution while handling the device.