The LC75812PTS-8565-H is 1/8, 1/9 duty dot matrix LCD display controllers/drivers that support 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 LC75812PTS-8565-H also provide on-chip character display ROM and RAM to allow display systems to be implemented easily. These products also provide up to 3 general-purpose output ports and incorporate a key scan circuit that accepts input from up to 35 keys to reduce printed circuit board wiring.
Feature
- Key input function for up to 35 keys (A key scan is performed only when a key is pressed.)
- Controls and drives a 5x7 or 5x8 dot matrix LCD.
- Supports accessory display segment drive (up to 65 segments)
- Display technique: 1/8 duty 1/4 bias drive (5x7 dots)1/9 duty 1/4 bias drive (5x8 dots)
- Display digits: 13 digits1 line (5x7 dots), 12 digits1 line (5x8 dots)
- Display control memoryCGROM: 240 characters (5x7 or 5x8 dots)CGRAM: 16 characters (5x7 or 5x8 dots)ADRAM: 13x5 bitsDCRAM: 52x8 bits
- Instruction function
- Sleep mode can be used to reduce current drain.
- Built-in display contrast adjustment circuit
- Switching between key scan output and general-purpose output ports can be controlled with instructions.
- PWM output for adjusting the LED backlight brightness
- The frame frequency of the common and segment output waveforms can be controlled by instructions.
- Serial data control of switching between the RC oscillator operating mode and external clock operating mode.
- Independent LCD driver 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-purposeoutput ports to the low level.
- RC oscillator circuit
