
NXP Semiconductors.
General description
The PCF2113x is a low-power CMOS LCD controller and driver, designed to drive a dot matrix LCD display of 2 lines of 12 characters or 1 line of 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-bit or 8-bit bus or via the 2-wire I2C-bus. The chip contains a character generator and displays alphanumeric and kana (Japanese) characters.
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 for e.g. additional segment display section: reduced current consumption while displaying icons only
■ Icon blink function
■ Very low current consumption (20 µA to 200 µA):
◆ Icon mode: < 25 µA
◆ Power-down mode: < 2 µA
■ On-chip:
◆ Configurable 4, 3 or 2 voltage multiplier, generating LCD supply voltage VLCD, independent of VDD, programmable by instruction (external supply also possible)
◆ Temperature compensation of on-chip generated VLCD: −0.16 %/K 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 characters of 5 × 8 dots
■ Character generator RAM: 16 characters of 5 × 8 dots; 3 characters used to drive 120 icons, 6 characters used if icon blink feature is used in application
■ 4-bit or 8-bit parallel bus and 2-wire I2C-bus interface
■ 18 row and 60 column outputs