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PCA9552

Part Number	PCA9552
Manufacturer	NXP
Description	16-bit I2C LED driver
Published	Mar 22, 2005
Detailed Description	PCA9552 16-bit I2C-bus LED driver with programmable blink rates Rev. 5.1 — 25 May 2023 Product data sheet 1 General de...
Datasheet	PCA9552 PDF File

Overview

PCA9552 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 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 controller's timers.
The PCA9552 LED blinker instead requires ...

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