Description

The PCF2CT631R151K is an IC chip that belongs to the PCF2116 family of LCD controller/drivers. It is a low-power CMOS LCD controller and driver that is 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. This single chip contains all necessary functions for the display, including on-chip generation of LCD bias voltages. It can display alphanumeric and kana (Japanese) characters and its interfaces to most microcontrollers via a 4 or 8-bit bus or via the 2-wire I2C-bus.

Specifications and 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

Application Scenarios

The PCF2CT631R151K can be used in various applications including telecom equipment, portable instruments, and point-of-sale terminals.

Comparison

• All necessary display functions are provided in a single chip, resulting in a minimum of external components and lower system power consumption.
• Can display alphanumeric and kana characters.
• Interfaces to most microcontrollers via a 4 or 8-bit bus or via the 2-wire I2C-bus.
• Low power consumption.

• The PCF2116K, a member of the same family, differs in VLCD/VOP generation and is available with character set C only.