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參數(shù)資料
| 型號： | HD66727 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器) |
| 中文描述： | 低功耗點陣液晶顯示控制器/鍵掃描功能（帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動器驅(qū)動程序） |
| 文件頁數(shù)： | 23/98頁 |
| 文件大?。?/td> | 1576K |
| 代理商： | HD66727 |
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HD66727
23
Character Generator RAM (CGRAM)
Character generator RAM (CGRAM) of 32
×
6 bits allows the user to redefine the character patterns. In the
case of 6
×
8-dot characters, up to four characters may be redefined.
Write the character codes at addresses “00”H to “03”H into DDRAM to display the character patterns
stored in CGRAM (Table 8).
Table 8
Example of Relationships between Character Code (DDRAM) and Character Pattern
(CGRAM Data)
D7 D6 D5 D4 D3 D2 D1 D0
Character code (DDRAM data)
CGRAM data
O4 O3 O2 O1 O0
O5
LSB
MSB
A2 A1 A0
A4 A3
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
*
*
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
0
1
1
1
0
0
0
0
0
0
0
*
*
O6
O7
CGRAM address
1
1
1
0
0
0
0
0
*
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
*
*
0
0
0
0
1
1
1
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
1
1
0
0
0
1
0
0
0
1
1
1
0
0
0
0
1
1
*
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Character
pattern
(1)
(Don't care)
(Don't care)
Character
pattern
(4)
Notes: 1. The lower 2 bits of the character code correspond to the upper two bits of the CGRAM address
(2 bits: 4 types).
2. CGRAM address bits 0 to 2 designate the character pattern raster-row position. The 8th raster-
row is the cursor position and its display is formed by a logical OR with the cursor.
3. In the 5-dot font width, the higher three bits of the CGRAM data are invalid; use the lower five
bits (O4 to O0). In the 6-dot font width, the higher two bits are invalid.
4. When the upper four bits (bits 7 to 4) of the character code are 0, CGRAM is selected.
Bits 3 and 2 of the character code are invalid (*). Therefore, for example, the character codes
00H and 08H correspond to the same CGRAM address.
5. A set bit in the CGRAM data corresponds to display selection, and 0 to non-selection.
Segment RAM (SEGRAM)
Segment RAM (SEGRAM) is used to enable control of segments such as icons and marks by the user
program. Segments and characters are driven by a multiplexing drive method.
SEGRAM has a capacity of 8
×
6 bits, for controlling the display of a maximum of 40 (48 in the 6-dot font
width) icons and marks. While COMS1 and COMS2 outputs are being selected, SEGRAM is read and
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HD66727A03 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66727A03BP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66727A03TA0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66727A03TA0L | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66727A04 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
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