General description
The PCF21xxC family are single-chip, silicon gate CMOS LCD driver circuits. A 3-line bus
(C-bus) structure enables serial data transfer with microcontrollers.

Features and benefits
- Supply voltage 2.25 V to 6.0 V
- Low current consumption
- Serial data input
- C-bus control
- One-point built-in oscillator
- Stand-alone or expanded system
- Power-on reset clear
- LCD segments: 40 (PCF2100C), 64 (PCF2111C) and 32 (PCF2112C)
- Multiplex rate: 1:2 (PCF2100C and PCF2111C) and 1:1 (PCF2112C)
- Word length: 22 bits (PCF2100C) and 34 bits (PCF2111C and PCF2112C)