GENERAL DESCRIPTION

The PCF2116 family of LCD controller/drivers consists of the PCF2116x, the PCF2114x and the PCF2116K.

The term ‘PCF2116’ is used to refer to all devices for common information. Specific information is given in separate paragraphs.

The ‘x’ in ‘PCF2116x’ and ‘PCF2114x’ represents a specific letter code for a character set in the character generator ROM (CGROM). The different character sets currently available are specified by the letters A, C, and G (see Figs 8 to 10). Other character sets are available on request.

The PCF2116 is a low-power CMOS LCD controller and driver, designed to drive a split screen dot matrix LCD display of 1 or 2 lines by 24 characters or 2 or 4 lines by 12 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 power consumption. The chip contains a character generator and displays alphanumeric and kana (Japanese) characters. The PCF2116 interfaces to most microcontrollers via a 4 or 8-bit bus or via the 2-wire I2C-bus. To allow partial VDD shutdown the ESD protection system of the SCL and SDA pins does not use a diode connected to VDD.

The PCF2116K differs from the other members of the family in that:

? VLCD/VOP generation is different (see Section 8.1)

? It is available with character set C only (see Fig.9).

FEATURES

? Single chip LCD controller/driver

? 1 or 2-line display of up to 24 characters per line, or

2 or 4 lines of up to 12 characters per line

? 5 × 7 character format plus cursor; 5 × 8 for kana

(Japanese syllabary) and user defined symbols

? On-chip:

– generation of LCD supply voltage (external supply

also possible)

– generation of intermediate LCD bias voltages

– oscillator requires no external components (external

clock also possible)

? Display data RAM: 80 characters

? Character generator ROM: 240 characters

? Character generator RAM: 16 characters

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

? CMOS/TTL compatible

? 32 row, 60 column outputs

? MUX rates 1 : 32 and 1 : 16

? Uses common 11 code instruction set

? Logic supply voltage range, VDD ? VSS: 2.5 to 6 V

? Display supply voltage range, VDD ? VLCD: 3.5 to 9 V

? Low power consumption

? I2C-bus address: 011101 SA0.

APPLICATIONS

? Telecom equipment

? Portable instruments

? Point-of-sale terminals.