LC75817E Datasheet | SANYO

Ordering number : EN6144 CMOS IC LC75817E, 75817W 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver with Key Input Function Overview The LC75817E and LC75817W are 1/8 to 1/10 duty dot matrix LCD display controller/drivers that supports the display of characters, numbers, and symbols. In addition to generating dot matrix LCD drive signals based on data transferred serially from a microcontroller, the LC75817E and LC75817W also provide on-chip character display ROM and RAM to allow display systems to be implemented easily. These products also provide up to 4 general-purpose output ports and incorporate a key scan circuit that accepts input from up to 30 keys to reduce printed circuit board wiring. - Built-in display contrast adjustment circuit - Up to 4 general-purpose output ports are included. - Serial data I/O supports CCB format munication with the system controller. - Independent LCD drive block power supply VLCD - A voltage detection type reset circuit is provided to initialize the IC and prevent incorrect display. - The INH pin is provided. This pin turns off the display, disables key scanning, and forces the general-purpose output ports to the low level. - RC oscillator circuit Features - Key input function for up to 30 keys (A key scan is performed only when a key is pressed.) - Controls and drives a 5 × 7, 5 × 8, or 5 × 9 dot matrix LCD. - Supports accessory display segment drive (up to 60 segments) - Display technique: 1/8 duty 1/4 bias drive (5 × 7 dots) 1/9 duty 1/4 bias drive (5 × 8 dots) 1/10 duty 1/4 bias drive (5 × 9 dots) - Display digits: 12 digits × 1 line (5 × 7 dots, 5 × 8 dots) 11 digits × 1 line (5 × 9 dots) - Display control memory CGROM: 240 characters (5 × 7, 5 × 8, or 5 × 9 dots) CGRAM: 16 characters (5 × 7, 5 × 8, or 5 × 9 dots) ADRAM: 12 × 5 bits DCRAM: 48 × 8 bits - Instruction function Display on/off control Display shift function - Sleep mode can be used to reduce current drain. - CCB is a trademark of SANYO ELECTRIC...