參數(shù)資料
型號: HCD66712UA03
廠商: Hitachi,Ltd.
英文描述: Dot-Matrix Liquid Crystal Display Controller/Driver
中文描述: 點陣液晶顯示控制器/驅(qū)動器
文件頁數(shù): 15/88頁
文件大?。?/td> 662K
代理商: HCD66712UA03
HD66712U
378
Table 2
Resistor Selection
RS
R/
:
Operation
0
0
IR write as an internal operation (display clear, etc.)
0
1
Read busy flag (DB7) and address counter (DB0 to DB6)
1
0
DR write as an internal operation (DR to DDRAM, CGRAM, or SEGRAM)
1
1
DR read as an internal operation (DDRAM, CGRAM, or SEGRAM to DR)
Display Data RAM (DDRAM)
Display data RAM (DDRAM) stores display data represented in 8-bit character codes. Its capacity is 80
×
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.
The DDRAM address (A
DD
) is set in the address counter (AC) as a hexadecimal number, as shown in
Figure 1.
The relationship between DDRAM addresses and positions on the liquid crystal display is described and
shown on the following pages for a variety of cases.
AC6 AC5 AC4 AC3 AC2 AC1 AC0
AC
MSB
LSB
1
0
0
1
1
1
0
Example: DDRAM address 4E
Figure 1 DDRAM Address
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