PEDL9044-03
1
Semiconductor
ML9044-xxA/xxB
Cursor/Blink Control Circuit
This circuit generates the cursor and blink of the LCD.
The operation of this circuit is controlled by the program of the CPU.
The cursor/blink display is carried out in the position corresponding to the DDRAM address set in the ADC
(Address Counter).
For example, when the ADC stores a value of “07” (hexadecimal), the cursor or blink is displayed as follows:
DB6
0
DB0
1
ADC
0
0
0
1
1
7
6
0
Digit
1
2
3
4
5
7
8
9
23 24
16 17
In 1-line display mode
00 01 02 03 04 05 06 07 08
Cursor/blink position
Digit
1
2
3
4
5
6
7
8
9
23 24
16 17
First line
00 01 02 03 04 05 06 07 08
In 2-line display mode
Second line 40 41 42 43 44 45 46 47 48
56 57
Cursor/blink position
Note: The cursor or blink is also displayed even when a CGRAM or ABRAM address is set in
the ADC. Therefore, the cursor or blink display should be inhibited while the ADC is
holding a CGRAM or ABRAM address.
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