PCF8531 Description
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 external ponents and low power consumption.
PCF8531 Key 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)