PCF2119VU Просмотр технического описания (PDF) - Philips Electronics

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PCF2119VU

LCD controllers/drivers

Philips Electronics 

Philips Semiconductors

LCD controllers/drivers

Product specification

PCF2119X

1 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 VDD2 value and LCD liquid

properties)

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

– Icon mode: <25 µA

– Power-down mode: <2 µA.

1.1 Note

Icon mode is used to save current. When only icons are

displayed, a much lower operating voltage VLCD can be

used and the switching frequency of the LCD outputs is

reduced. In most applications it is possible to use VDD as

VLCD.

2 APPLICATIONS

• Telecom equipment

• Portable instruments

• Point-of-sale terminals.

3 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. The PCF2119x 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 PCF2119x characterizes the built-in

character set. Various character sets can be manufactured

on request.

2003 Jan 30

3

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