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Chapter 22 LCD Controller/Driver (LCD-C/D)
The LCD Controller/Driver is provided with the µPD70(F)3420, µPD70(F)3421,
µPD70(F)3422 and µPD70F3423 microcontrollers only.
This LCD Controller/Driver is suitable for LC displays with up to 160 segments.
The supported addressing method of the LCD is multiplex addressing.
22.1 Overview
The LCD Controller/Driver generates the signals that are necessary for driving
an LCD panel.
Features summary
The LCD Controller/Driver provides:
• Maximum of 40 segment signal outputs (SEG0 to SEG39)
• 4 common signal outputs (COM0 to COM3)
• Display mode: 1/4 duty (1/3 bias)
• Wide range of selectable frame frequencies
• Edge enhancement
Preliminary User's Manual U17566EE1V2UM00
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