RA8816
Preliminary Version 1.6
144x65 Character/Graphic LCD Driver
[03h] Memory Write Mode Register (MWMR)
RW
0
DB7
DB6
DB5
DB4
DB3
DB2
INV
DB1
MD1
DB0
MD0
BMOD1 BMOD0
BIEN
ASCS
BOLD
BMOD[1..0]: Setup the range for memory written.
Table 5-4
BMOD1 BMOD0
Memory Range of Write
Normal Display Range
Display Range + Scroll-Buffer
Scroll-Buffer
0
0
1
0
1
x
BIEN: Busy interrupt control. 1 Î Busy interrupt enable (After write data to memory). 0 Î Busy interrupt
disable.
ASCS: Select ASCII Table。0 Î Select ASCII Table-1. 1 Î Select ASCII Table-2. Refer Chapter 6-9.
BOLD: Select Bold Font to write Display RAM. 0 Î Normal font. 1 Î Bold font.
INV: Select reverse font to write Display RAM. 0 Î Normal font. 1 Î Reverse font.
MD[1..0]: Select operation mode for Display RAM.
Table 5-5
MD1
MD0
Operation Mode
Graphic Mode
0
0
1
1
0
1
0
1
Small ASCII (8X8)
Big ASCII(8X16)
Full Size(16X16)
When Full-Size mode(MD[1..0] = 11), if the first byte data is less than 80h, RA8816 will assume it’s an
ASCII code and show the Big ASCII font. But if want to show the Big ASCII font that code is large than 80h,
then the operation mode has to change to Big ASCII mode(MD[1..0] = 10).
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