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.