參數(shù)資料
型號: ST7036
廠商: Electronic Theatre Controls, Inc.
英文描述: Dot Matrix LCD Controller/Driver
中文描述: 點陣LCD控制器/驅(qū)動器
文件頁數(shù): 18/72頁
文件大?。?/td> 864K
代理商: ST7036
ST7036
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Display Data RAM (DDRAM)
Display data RAM (DDRAM) stores display data represented in 8-bit character codes. Its extended capacity is 80
x 8 bits, or 80 characters. The area in display data RAM (DDRAM) that is not used for display can be used as
general data RAM. See Figure 6 for the relationships between DDRAM addresses and positions on the liquid
crystal display.
The DDRAM address (A
DD
) is set in the address counter (AC) as hexadecimal.
1-line display (N3=0,N = 0) (Figure 7)
When there are fewer than 80 display characters, the display begins at the head position. For
example, if using only the ST7036, 20 characters are displayed. See Figure 7.
When the display shift operation is performed, the DDRAM address shifts. See Figure 8.
V1.1
2003/12/24
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High order bits
Low order bits
AC6 AC5 AC4 AC3 AC2 AC1 AC0
1
0
0
1
1
1
1
Example : DDRAM Address 4F
Display Position (digit)
Fig. 6 DDRAM Address
Fig. 7 1-Line Display
00
01
02 03
04
05
........
4D 4E 4F
DDRAM Address
Display Position
Fig. 8 1-Line by 20-Character Display Example
DDRAM Address
00
01 02
03
....
13
1
2
3
4
5
6
78
79 80
1
2
3
4
20
14
01
02 03
04
....
00 01
02
....
12
4F
For Shift Left
For Shift Right
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