Section 13 Lcd Controller/Driver; Overview; Features - Hitachi H8/3827R Series Hardware Manual

13.1

Overview

The H8/3827R Series 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

1. Features
Features of the LCD controller/driver are given below.
• Display capacity
Duty Cycle
Static
1/2
1/3
1/4
• LCD RAM capacity
8 bits × 32 bytes (256 bits)
• Word access to LCD RAM
• All eight 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

Section 13 LCD Controller/Driver

Internal Driver
32 seg
32 seg
32 seg
32 seg
Segment External Expansion Driver
256 seg
128 seg
64 seg
64 seg
323