參數(shù)資料
型號(hào): ML9044A-XXBCVWA
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類(lèi): 顯示控制器
英文描述: 17 X 120 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC175
封裝: GOLD BUMP, DIE-175
文件頁(yè)數(shù): 33/64頁(yè)
文件大小: 696K
代理商: ML9044A-XXBCVWA
PEDL9044A-04
OKI Semiconductor
ML9044A-xxA/xxB
39/64
Expansion Instruction Codes
The busy status of the ML9044A is rather longer than the cycle time of the CPU, since the internal processing of
the ML9044A starts at a timing which does not affect the display on the LCD. In the busy status (Busy Flag is “1”),
the ML9044A executes the Busy Flag Read instruction only. Therefore, the CPU should ensure that the Busy Flag
is “0” before sending an expansion instruction code to the ML9044A.
1) Arbitrator Display Line Set
RS1
0
RS0
0
R/
W
0
DB7
0
DB6
0
DB5
0
DB4
0
DB3
0
DB2
0
DB1
1
DB0
AS
Expansion instruction code:
This expansion instruction code sets the Arbitrator display line. The relationship between the status of this bit
and the common outputs is as follows:
For display examples, refer to LCD Drive Waveforms section.
CSR
duty
AS bit
Shift direction
Arbitrator’s common pin
L
1/9
L
COM1
→COM9
COM9
L
1/9
H
COM1
→COM9
COM1
L
1/12
L
COM1
→COM12
COM12
L
1/12
H
COM1
→COM12
COM1
L
1/17
L
COM1
→COM17
COM17
L
1/17
H
COM1
→COM17
COM1
H
1/9
L
COM9
→COM1
COM1
H
1/9
H
COM9
→COM1
COM9
H
1/12
L
COM12
→COM1
COM1
H
1/12
H
COM12
→COM1
COM12
H
1/17
L
COM17
→COM1
COM1
H
1/17
H
COM17
→COM1
COM17
Note: The execution time of this instruction is 37
s at an oscillation frequency (OSC) of 270 kHz.
2) Contrast Adjusting Data Write
RS1
0
RS0
0
R/
W
0
DB7
0
DB6
0
DB5
1
DB4
F4
DB3
F3
DB2
F2
DB1
F1
DB0
F0
Expansion instruction code:
This instruction writes contrast adjusting data (F4 to F0) to the contrast register.
After contrast adjusting data is written in the register, the potential (VLCD) output to the V5 pin varies
according to the data written.
The VLCD becomes maximum when the content of the contrast register is “1F” (hexadecimal) and becomes
minimum when it is “00” (hexadecimal).
Note: The execution time of this instruction is 37
s at an oscillation frequency (OSC) of 270 kHz.
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