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PS12801ARN-0 参数 Datasheet PDF下载

PS12801ARN-0图片预览
型号: PS12801ARN-0
PDF下载: 下载PDF文件 查看货源
内容描述: 外形尺寸与框图 [OUTLINE DIMENSION & BLOCK DIAGRAM]
分类和应用:
文件页数/大小: 65 页 / 1282 K
品牌: POWERTIP [ POWERTIP TECHNOLOGY ]
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ST7066U  
#" 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 1 for the relationships between DDRAM addresses and positions on the liquid  
crystal display.  
The DDRAM address (ADD ) is set in the address counter (AC) as hexadecimal.  
$" 1-line display (N = 0) (Figure 2)  
When there are fewer than 80 display characters, the display begins at the head position. For  
example, if using only the ST7066U, 8 characters are displayed. See Figure 3.  
When the display shift operation is performed, the DDRAM address shifts. See Figure 3.  
High Order  
bits  
Low Order  
bits  
Example: DDRAM Address 4F  
AC  
AC6 AC5 AC4 AC3 AC2 AC1 AC0  
1
0
0
1
1
1
1
Figure 1 DDRAM Address  
Display  
Position  
(Digit)  
1
2
3
4
5
6
78 79 80  
4D 4E 4F  
00 01 02 03 04 05  
………………..  
DDRAM Address  
Figure 2 1-Line Display  
Display  
Position  
1
2
3
4
5
6
7
8
00 01 02 03 04 05 06 07  
DDRAM  
Address  
For  
01 02 03 04 05 06 07 08  
4F 00 01 02 03 04 05 06  
Shift Left  
For  
Shift Right  
Figure 3 1-Line by 8-Character Display Example  
$" 2-line display (N = 1) (Figure 4)  
Case 1: When the number of display characters is less than 40 × 2 lines, the two lines are displayed from the head. Note  
that the first line end address and the second line start address are not consecutive. For example, when just the  
ST7066U is used, 8 characters × 2 lines are displayed. See Figure 5.  
V2.0  
2001/03/01  
10/42  
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