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參數(shù)資料
| 型號(hào)： | 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(dòng)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(dòng)器驅(qū)動(dòng)程序） |
| 文件頁(yè)數(shù)： | 22/117頁(yè) |
| 文件大小： | 834K |
| 代理商： | HD66724 |
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HD66724/HD66725
22
The character pattern data is sent serially through a 72-bit (96-bit) shift register and latched when all
needed data has arrived. The latched data then enables the segment signal drivers to generate drive
waveform outputs.
The shift direction of 72-bit (96-bit) data can be changed by the SGS bit. The shift direction for the
common driver can also be changed by the CMS bit by selecting an appropriate direction for the device
mounting configuration.
When multiplexing drive is not used, or during the standby or sleep mode, all the above common and
segment signal drivers output the GND level, halting the display.
Booster (DC-DC Converter)
The booster doubles or triples a voltage input to the Vci pin. With this, both the internal logic units and
LCD drivers can be controlled with a single power supply. Boost output level from single to triple boost
can be software-selected. For details, see the Power Supply for Liquid Crystal Display Drive section.
V-Pin Voltage Follower
A voltage follower for each voltage level (V1 to V5) reduces current consumption by the LCD drive power
supply circuit. No external resistors are required because of the internal bleeder-resistor, which generates
different levels of LCD drive voltage. This internal bleeder-resistor can be software-specified from 1/2 bias
to 1/6.5 bias, according to the liquid crystal display drive duty value. The voltage followers can be turned
off while multiplexing drive is not being used. For details, see the Power Supply for Liquid Crystal Display
Drive section.
Contrast Adjuster
The contrast adjuster can be used to adjust LCD contrast in 32 steps by varying the LCD drive voltage by
software. This can be used to select an appropriate LCD brightness or to compensate for temperature.
Table 4
DDRAM Addresses and Display Positions
Dis-
play
Line
1st
Char.
2nd
Char.
3rd
Char.
4th
Char.
5th
Char.
6th
Char.
7th
Char.
8th
Char.
9th
Char.
10th
Char.
11th
Char.
12th
Char.
13th
Char.
14th
Char.
15th
Char.
16th
Char.
1st
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
2nd
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
3rd
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
4th
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
5th
Note:
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
When SGS = 0, SEG 1/72 (96) to SEG 6/67 (91) appear at the first character at the extreme left of
the screen.
When SGS = 1, SEG 72 (96)/1 to SEG 67 (91)/6 appear at the first character at the extreme left of
the screen.
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(dòng)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(dòng)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(dòng)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(dòng)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(chēng):未知廠家 功能描述: |
| HD66724RA03TA0L | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD CONTROLLER |
| HD66725 | 制造商:HITACHI 制造商全稱(chēng):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(chēng):未知廠家 功能描述:LCD CONTROLLER |
| HD66726 | 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
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