GENERAL DESCRIPTION

The PCF2113x is a low power CMOS LCD controller and driver, designed to drive a dot matrix LCD display of 2-line by 12 or 1-line by 24 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 PCF2113x interfaces to most microcontrollers via a 4 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 letter ‘x’ in PCF2113x characterizes the built-in character set. Various character sets can be manufactured on request.

FEATURES

? Single-chip LCD controller/driver

? 2-line display of up to 12 characters + 120 icons, or 1-line display of up to 24 characters + 120 icons

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

? Icon mode: reduced current consumption while displaying

? Icon blink function

? On-chip:

– Configurable 4, 3 or 2 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; 3 characters used to drive 120 icons, 6 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 60 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 ? VSS1 = 1.8 to 5.5 V (chip may be driven with two battery cells)

? VLCD generator supply voltage range VDD2 ? VSS2 = 2.2 to 4.0 V

? Display supply voltage range VLCD ? VSS2 = 2.2 to 6.5 V

? Direct mode to save current consumption for icon mode and Mux 1 : 9 (depending on VDD2 value and LCD liquid properties)

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

– Icon mode: <25 μA

– Power-down mode:

APPLICATIONS

? Telecom equipment

? Portable instruments

? Point-of-sale terminals.