13. Dot Matrix LCD Controller (H8/3857 Group)
Rev.3.00 Jul. 19, 2007 page 358 of 532
REJ09B0397-0300
13.3.8 Blink
Function
Dot Matrix Display Blinking
The LCD controller can perform blinking display in any area. With an 80 Hz frame frequency, the
display goes on and off in a cycle of approximately 1.6 seconds.
To set a blink area, in the horizontal direction the line unit is specified by means of the blink start
line register (LR8) and blink end line register (LR9), while in the vertical direction a 5-bit unit
(SOB = 0) or 8-bit unit (SOB = 1) is set in the blink register (LR6). When 1 is set in the blink
register (LR6), blinking of the corresponding dot is controlled. After making these register
settings, blinking is started by setting the BLK bit in control register 2 (LR1) to 1. As the blink
area is designated by an absolute specification with respect to the display memory, if the display is
scrolled the blink area also shifts accordingly.
Blink start line
register (LR8)
Blink end line
register (LR9)
1
1
1
0
0
1
1
0
Blink register (LR6)
DB0
(LSB)
DB7
(MSB)
SEG1
SEG6
SEG11 SEG16 SEG21 SEG26 SEG31 SEG36
Blink area
LCD
SOB = 0
SEG1 SEG9
SEG17 SEG25
SEG41
SEG33
SEG49 SEG57
SOB = 1
Figure 13.10 Blink Register (LR6) and Blink Locations
Summary of Contents for F-ZTAT H8 Series
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