PCF8531 - NXP

PCF8531 34 x 128 pixel matrix driver

The PCF8531 is a low-power CMOS1 LCD row and column driver, designed to drive dot matrix graphic displays at multiplex rates of 1:17, 1:26, and 1:34. Furthermore, it can drive up to 128 icons. All necessary functions for the display are provided in a single chip, including on-chip generation of VLCD and the LCD bias voltages, resulting in a minimum of extern.

Features

 Single-chip LCD controller and driver
 34 row and 128 column outputs
 Display data RAM 34  128 bits
 128 icons (last row is used for icons)
 Fast-mode I2C-bus interface (400 kbit/s)
 Software selectable multiplex rates: 1:17, 1:26, and 1:34
 Icon mode with multiplex rate 1:2:  Featuring reduced current consumption while displaying icons only
 On-chip:  Generation of VLCD (external supply also possible)  Selectable linear temperature compensation  Oscillator requires no external components (external clock also possible)  Generation of intermediate LCD bias voltages  Power-On Res.