LCD DRVR 3.3V Automotive 100Pin TQFP
The LC75812PT 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 LC75812PT 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.
Features
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- Key input function for up to 35 keys A key scan is performed only when a key is pressed.
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- Controls and drives a 5x7 or 5x8 dot matrix LCD.
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- Supports accessory display segment drive up to 65 segments
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- Display technique:
1/8 duty 1/4 bias drive 5x7 dots
1/9 duty 1/4 bias drive 5x8 dots
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- Display digits: 13 digits1 line 5x7 dots, 12 digits1 line 5x8 dots
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- Display control memory
CGROM: 240 characters 5x7 or 5x8 dots
CGRAM: 16 characters 5x7 or 5x8 dots
ADRAM: 13x5 bits
DCRAM: 52x8 bits
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- Instruction function
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- Sleep mode can be used to reduce current drain.
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- Built-in display contrast adjustment circuit
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- Switching between key scan output and general-purpose output ports can be controlled with instructions.
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- PWM output for adjusting the LED backlight brightness
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- The frame frequency of the common and segment output waveforms can be controlled by instructions.
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- Serial data control of switching between the RC oscillator operating mode and external clock operating mode.
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- Independent LCD driver block power supply VLCD
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- A voltage detection type reset circuit is provided to initialize the IC and prevent incorrect display.
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- 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.
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- RC oscillator circuit
