General description
The PCF2119x is a low power CMOS¹ 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 ×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 PCF2119x 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.

FEATUREs and benefits
Single-chip LCD controller and driver
2-line display of up to 16 characters plus 160 icons or 1-line display of up to 32 characters plus 160 icons
5×7 character format plus cursor; 5×8 for kana (Japanese) and user defined symbols
Reduced current consumption while displaying icons only
Icon blink function
On-chip:
  ‹Configurable 4, 3, or 2 times voltage multiplier generating LCD supply voltage, independent of VDD, programmable by instruction (external supply also possible)
  ‹Temperature compensation of on-chip generated VLCDOUT: −0.16 %/K to −0.24 %/K (programmable by instruction)
  ‹Generation of intermediate LCD bias voltages
‹  Oscillator requires no external components (external clock also possible)
Display Data RAM (DDRAM): 80 characters
Character Generator ROM (CGROM): 240 characters (5×8)
Character Generator RAM (CGRAM): 16 characters (5×8); 4 characters used to drive 160 icons, 8 characters used if icon blink feature is used in application
4-bit or 8-bit parallel bus and 2-wire I2C-bus interface
Manufactured insilicon gate CMOS process
18 row and 80 column outputs
Multiplex rates 1:18 (2-line display or 1-line display), 1:9 (for 1-line display of up to 16 characters and 80 icons) and 1:2 (for icon only mode)
Uses common 11 code instruction set (extended)
Logic supply voltage: VDD1−VSS1= 1.5 V to 5.5 V (chip may be driven with two battery cells)
LCD supply voltage: VLCDOUT−VSS2= 2.2 V to 6.5 V
VLCDgenerator supply voltage: VDD2−VSS2= 2.2 V to 4 V and VDD3−VSS2=2.2Vto4V
Direct mode to save current consumption for icon mode and multiplex drive mode 1:9 (depending on VDD2value and LCD liquid properties)
Very low current consumption (20μA to 200μA):
  ‹Icon mode: < 25μA
  ‹Power-down mode: < 2μA
Icon mode is used to save current. When only icons are displayed, a much lower LCD operating voltage can be used and the switching frequency of the LCD outputs is reduced; in most applications it is possible to use VDDas LCD supply voltage

APPLICATIONs
Telecom equipment
Portable instruments
Point-of-sale terminals