HD64645 Datasheet, PDF (18/50 Pages) Hitachi Semiconductor – LCTC (LCD Timing Controller)

HD64645/64646
Functional Description
Programmable Screen Format
Figure 7 illustrates the relation between LCD display screen and registers. Figure 8 shows a timing chart of
signals output from the LCTC in mode 5 as an example.
Horizontal total characters (R0)
(R21)
Start
raster
Horizontal displayed characters (R1)
Start address (R12)
Display period
Horizontal
character pitch
CPU
memory write time
Display start
raster address
(R21)
(1 character)
Figure 7 Relation between Display Screen and Registers
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