GENERAL DESCRIPTION

The PCF2119x is a low power CMOS LCD controller and driver, designed to drive a dot matrix LCD display of 2-line by 16 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.

FEATURES

? Single-chip LCD controller/driver

? 2-line display of up to 16 characters + 160 icons, or 1-line display of up to 32 characters + 160 icons

? 5×7 character format plus cursor; 5×8 for kana (Japanese) and user defined symbols

? Icon mode: reduced current consumption while displaying icons only

? Icon blink function

? On-chip:

– Configurable 4 (3 and 2) times voltage multiplier generating LCD supply voltage, independent of VDD, programmable by instruction (external supply also possible)

– Temperature compensation of on-chip generated VLCD:?0.16 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: 80 characters

? Character Generator ROM: 240, 5×8 characters

? Character Generator RAM: 16, 5×8 characters; 4 characters used to drive 160 icons, 8 characters used if icon blink feature is used in application

? 4 or 8-bit parallel bus and 2-wire I2C-bus interface

? CMOS compatible

? 18 row and 80 column outputs

? Multiplex rates 1 : 18 (for normal operation), 1 : 9 (for single line operation) and 1 : 2 (for icon only mode)

? Uses common 11 code instruction set (extended)

? Logic supply voltage range, VDD1?VSS= 1.5 to 5.5 V (chip may be driven with two battery cells)

? Display supply voltage range, VLCD?VSS= 2.2 to 6.5 V

? HVgen supply voltage range, VDD2?VSS= 2.2 to 4 V and VDD3?VSS= 2.2 to 4 V

? Direct mode to save current consumption for icon mode and Mux 1 : 9 (depending on VDD2value and LCD liquid properties)

? Very low current consumption (20 to 200μA):

– Icon mode: <25μA

– Power-down mode:

APPLICATIONS

? Telecom equipment

? Portable instruments

? Point-of-sale terminals.