Datasheet4U Logo Datasheet4U.com

93LC76 Datasheet 8K/16K 2.5V Microwire Serial EEPROM

Manufacturer: Microchip Technology

📥 Download Datasheet

General 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.

The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking can not be seen and then using the duty cycle to vary the amount of time the LED is on and thus the average current through the LED.

Overview

INTEGRATED CIRCUITS PCA9531 8-bit I2C LED dimmer Product data 2003 Nov 10 Philips Semiconductors Philips Semiconductors Product data 8-bit I2C LED dimmer.

Key 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.

More Datasheets from Microchip Technology

Part Number Description
93LC76A 8-Kbit Microwire Compatible Serial EEPROM
93LC76B 8-Kbit Microwire Compatible Serial EEPROM
93LC76C 8-Kbit Microwire Compatible Serial EEPROM
93LC46 1K/2K/4K 2.5V Microwire Serial EEPROM
93LC46A 1-Kbit Microwire Compatible Serial EEPROM
93LC46B 1-Kbit Microwire Compatible Serial EEPROM
93LC56 1K/2K/4K 2.5V Microwire Serial EEPROM
93LC56A 2-Kbit Microwire Compatible Serial EEPROM
93LC56B 2-Kbit Microwire Compatible Serial EEPROM
93LC56C 2-Kbit Microwire Compatible Serial EEPROM