HD66730 Datasheet, PDF (92/131 Pages) Hitachi Semiconductor – Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display

HD66730/HD66731
Display Attribute Designation
The HD66730/1 allocates 12 bits of the full-size 16-bit code character to an abbreviated character code and
2 bits to a display-attribute code (Figure 26). White/black inverted display, blinking display, and
white/black inverted blinking display can be designated for each full-size character (Table 21). Display
attribute control is performed for a 12 × 13 dot matrix unit that includes a 11 × 12 dot full-size character
and a column of dots to the right and a row of dots to the bottom (Figure 27). The blinking cycle for
blinking display and white/black inverted blinking display is 64 frames. Blinking display is performed by
changing the display pattern every 32 frames. Since the 8-bit code designated for half-size characters
cannot accommodate a display attribute, they will always be displayed normally.
Table 22 Display Attribute Designation
A1
A0
Display State
0
0
Normal display
0
1
White/black inverted display
1
0
Blinking display
1
1
White/black inverted blinking display
0 A1 A0 0 C11 C10 C9 C8
Attribute
code
Upper character
code
C7 C6 C5 C4 C3 C2 C1 C0
Lower character code
Figure 26 Full-Size Code Format
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