The PCF21219 is a low power CMOS LCD controller and driver, designed to drive a dot
matrix LCD display of 2-lines by 16 characters or 1-line by 32 characters with 5 x 8 dot
format. All necessary functions for the display are provided in a single chip, including
on-chip generation of LCD bias voltages, resulting in a minimum of external components
and lower system current consumption. The PCF21219 interfaces to most
microcontrollers via a 4-bit or 8-bit bus or via the 2-wire I²C-bus. The chip contains a
character generator and displays alphanumeric and kana (Japanese) characters.
The last letter in the type name, for example PCF21219DUGR, characterizes the built-in
character set. Various character sets can be manufactured on request. In addition 16 user
defined symbols (5 x 8 dot format) are available.