Section 13 LCD Controller/Driver
Rev. 7.00 Mar 10, 2005 page 415 of 652
REJ09B0042-0700
Section 13 LCD Controller/Driver
13.1 Overview
This LSI has an on-chip segment type LCD control circuit, LCD driver, and power supply circuit,
enabling it to directly drive an LCD panel.
13.1.1 Features
Features of the LCD controller/driver are given below.
• Display capacity
Duty Cycle Internal Driver
Static 32 seg
1/2 32 seg
1/3 32 seg
1/4 32 seg
• LCD RAM capacity
8 bits × 16 bytes (128 bits)
• Word access to LCD RAM
• All four segment output pins can be used individually as port pins.
• Common output pins not used because of the duty cycle can be used for common double-
buffering (parallel connection).
• Display possible in operating modes other than standby mode
• Choice of 11 frame frequencies
• Built-in power supply split-resistance, supplying LCD drive power
• Use of module standby mode enables this module to be placed in standby mode independently
when not used.
• A or B waveform selectable by software
• Removal of split-resistance can be controlled in software. Note that this capability is
implemented in the H8/38124 Group only.
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