Segment Display LCD Driver 3.3V/5V 56Pin TSSOP T/R
Overview
The PCF8545 is a peripheral device which interfaces to almost any Liquid Crystal Display LCD with low multiplex rates. It generates the drive signals for any multiplexed LCD containing up to eight backplanes, and up to 320 elements. The PCF8545 is compatible with most microcontrollers and communicates via the two-line bidirectional I2C-bus PCF8545A or a three line unidirectional SPI-bus PCF8545B. Communication overheads are minimized using a display RAM with auto-incremented addressing.
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## Features
* Single-chip 320 elements LCD controller and driver
* Wide range for digital power supply: from 1.8 V to 5.5 V
* LCD supply range from 2.5 V up to 5.5 V
* LCD and logic supplies may be separated
* Low power consumption
* Selectable backplane drive configuration: 4, 6, or 8 backplane multiplexing
* Selectable display bias configuration
* 320-bit RAM for display data storage
* 400 kHz I²C-bus interface PCF8545A
* 5 MHz SPI-bus interface PCF8545B
* Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz; factory calibrated
* 320 segments driven allowing:
* up to 40 7-segment alphanumeric characters
* up to 20 14-segment alphanumeric characters
* any graphics of up to 320 elements
* Manufactured in silicon gate CMOS process
## Target Applications
* Industrial and consumer products
## Features
* Industrial and consumer products