PCA9531 - 8-bit I2C LED dimmer

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NXP

PCA9531 8-bit I2C LED dimmer by NXP - Datasheet Preview — Datasheet preview – PCA9531

Datasheet Details

Part number	PCA9531
Manufacturer	NXP
File Size	138.46 KB
Description	8-bit I2C LED dimmer
Datasheet	PCA9531 Datasheet
Additional preview pages of the PCA9531 datasheet.

Product details

Description

The PCA9531 is an 8-bit I2C & SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.

The PCA9531 contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM.

Features

Eight LED drivers (on, off, flashing at a programmable rate).
Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.625 and 160 Hz (1.6 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 interface logic compatible with SMBus.
Internal power-on reset.
Noise filter on SCL/SDA.

📁 Similar Datasheet

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Other Datasheets by NXP

PCA9532 - 16-bit I2C LED dimmer
PCA9533 - 4-bit I2C LED dimmer
PCA9534 - 8-bit I2C and SMBus/ low power I/O port
PCA9535 - 16-bit SMBus
PCA9535C - 16-bit SMBus
PCA9536 - 4-bit I2C and SMBus I/O port

Published: Mar 22, 2005 |