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14. Dot Matrix LCD Controller (H8/3854 Group)
14.3
Operation
14.3.1
System Overview
The LCD controller operates at 1/16 or 1/8 duty. The display size is a maximum of 40 × 16 dots.
As the LCD controller operates on the subclock to perform display control, the time, etc., can be
constantly displayed. Also, since data in the display RAM is retained even in module standby
mode, low power consumption can be achieved without affecting the display.
H8/3854
CPU
Rev.3.00 Jul. 19, 2007 page 384 of 532
REJ09B0397-0300
RS
R/W
LCD
STRB
controller
DB7
to DB0
Figure 14.2 System Block Diagram
SEG1 to SEG40
COM1 to COM16
LCD panel
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