參數(shù)資料
型號: HD66728
廠商: Hitachi,Ltd.
英文描述: 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
中文描述: 112 × 80點圖形LCD控制器/驅(qū)動器(112 × 80點圖形液晶顯示控制器)
文件頁數(shù): 52/138頁
文件大小: 2158K
代理商: HD66728
HD66728
52
RAM Address Set
RM:
Selects DDRAM or CGRAM. When RM = 0, the DDRAM is selected. When RM = 1, the CGRAM
is selected. The selected RAM is accessed with this setting.
AD10-0:
Initially set RAM addresses to the address counter (AC). Once the RAM data is written, the AC
is automatically updated according to the I/D bit. This allows consecutive accesses without resetting
addresses. Once the RAM data is read, the AC is automatically updated according to the I/D bit when
RDM = 0, and not updated when RDM = 1. Set RDM to 1 when read, modify, and write are done in every
one-byte data. RAM address setting is not allowed in the sleep mode or standby mode.
R/W RS DB7
DB0
0
0
DB6 DB5 DB4 DB3 DB2 DB1
1
0
AD7 AD6
0
0
1
1
AD2 AD1 AD0
AD8
AD3
AD9
AD4
AD5
RM AD10
Figure 25 RAM Address Set Instruction
Table 21
AD Bits and DDRAM Setting
RM
AD10–AD0
DDRAM Setting
0
"000"H–"00F"H
Character code on the 1st line
0
"010"H–"01F"H
Character code on the 2nd line
0
"020"H–"02F"H
Character code on the 3rd line
0
"030"H–"03F"H
Character code on the 4th line
0
"040"H–"04F"H
Character code on the 5th line
0
"050"H–"05F"H
Character code on the 6th line
0
"060"H–"06F"H
Character code on the 7th line
0
"070"H–"07F"H
Character code on the 8th line
0
"080"H–"08F"H
Character code on the 9th line
0
"090"H–"09F"H
Character code on the 10th line
Table 22
AD Bits and CGRAM Setting
RM
AD9–AD0
CGRAM Setting in the Character Mode
1
"000"H–"06F"H
Font pattern of CGRAM characters (1) to (16)
1
"080"H–"0EF"H
Font pattern of CGRAM characters (17) to (32)
1
"100"H–"16F"H
Font pattern of CGRAM characters (33) to (48)
1
"180"H–"1EF"H
Font pattern of CGRAM characters (49) to (64)
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