Lcd Controller/Driver Pins - Fujitsu MB90420/5 (A) Series Hardware Manual

MB90420/5 (A) SERIES F

14.3 LCD Controller/Driver Pins

Pins related to the LCD controller/driver are explained, and the block diagram of the pins is given.
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Pins related to LCD controller/driver
The following pins are related to the LCD controller/driver: four common output pins (COM0 to COM3), 24
segment output pins (SEG0 to SEG23), and four LCD driving power pins (V0 to V3).
• COM0 to COM3 pins
The COM0 to COM3 pins are LCD common output pins.
• SEG00 to SEG11; P36/SEG12 to P37/SEG13; P40/SEG14 to P47/SEG21; P90/SEG22 to P91/SEG23
pins
The SEG00 to SEG11 pins are LCD segment output pins.
The P36/SEG12 to P37/SEG13, P40/SEG14 to P47/SEG21, and P90/SEG22 to P91/SEG23 pins can
serve both as general-purpose I/O ports (P36 to P37, P40 to P47, and P90 to P91) and as LCD segment
output pins (SEG12 to SEG13, SEG14 to SEG21, and SEG22 to SEG23). Switching between these
different functions is performed based on the LCRH register setting.
• V0 to V3 pins
The V0 to V3 pins are LCD driving power pins.
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MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
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