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參數(shù)資料
| 型號： | HD66724 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Graphics LCD 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： | 圖形液晶顯示控制器/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)： | 34/117頁 |
| 文件大?。?/td> | 834K |
| 代理商： | HD66724 |
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HD66724/HD66725
34
Programming Character Patterns
This section explains the correspondence between addresses and data used to program character patterns in
EPROM.
Programming to EPROM:
The HD66724/HD66725 character generator ROM can generate 432 6
×
8-dot
character patterns. Table 17 shows the correspondence between the EPROM address, data, and the
character pattern.
Table 17
Examples of Correspondence between EPROM Address, Data, and Character Pattern
(6
×
8 Dots)
A
10
A
9
A
8
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
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
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
O
4
O
3
O
2
O
1
O
0
0
0
0
0
0
0
0
0
O
5
Character code
Line position
EPROM Address
Data
LSB
MSB
0
0
0
0
0
0
0
0
0
ROM
bit
A
11
A
12
0
0
1
0
1
1
0
0
1
Notes: 1. EPROM address: Bit A12 corresponds to the CGROM memory bank switch bit ("ROM").
2. EPROM address: Bits A11 to A4 correspond to a character code.
3. EPROM address: Bits A2 to A0 specify the line position of the character pattern. EPROM
address bit A3 must be set to 0.
4. EPROM data: Bits O5 to O0 correspond to character pattern data.
5. Areas which are lit (indicated by shading) are stored as 1, and unlit areas as 0.
6. The eighth raster-row is also stored in the CGROM, and must also be programmed. If the eighth
raster-row is used for a cursor, this data must all be set to zero.
7. EPROM data: Bits O7 to O6 are invalid. 0 must be written in all bits.
Handling Unused Character Patterns:
1. EPROM data outside the character pattern area: This is ignored by character generator ROM for display
operation so any data is acceptable.
2. EPROM data in CGRAM area: Always fill with zeros.
3. Treatment of unused user patterns in the HD66724/HD66725 EPROM: Depending on to the user
application, these are handled in either of two ways:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66725 | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器) |
| HD66726 | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器) |
| HD66727 | 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) |
| HD66728 | 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器) |
| HD66730 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66724/HD66725 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD66724RA03TA0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
| HD66725 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:112 x 80-dot Graphics LCD Controller/Driver |
| HD66725A03TA0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
| HD66726 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
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