HD6473837H Datasheet, PDF (328/562 Pages) Renesas Technology Corp – Hardware Manual

Section 13 LCD Controller/Driver
13.1 Overview
The H8/3834 Series has an on-chip segment-type LCD controller circuit, LCD driver, and power
supply circuit, for direct driving of an LCD panel.
13.1.1 Features
Features of the LCD controller/driver are as follows.
• Display capacity
On-chip driver only
Use with external segment
expansion driver
Duty
—
Static
1/2
1/3
1/4
Internal Driver
40 segments
36 segments
36 segments
36 segments
36 segments
External Segment
Expansion Driver
0
476 segments
220 segments
92 segments
92 segments
The HD66100 can be used for external expansion of the number of segments.
• LCD RAM capacity
8 bits × 64 bytes (512 bits)
• Word access to LCD RAM
• Segment output pins can be switched to general-purpose ports in groups of 4
• Unused common output pins can be used either for boosting common output (by parallel
connection) or as ports.
• Displays in all operation modes except standby mode.
• Choice of 11 frame frequencies
• Internal voltage divider for liquid crystal driver power supply
311