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參數(shù)資料
| 型號： | HD66720 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| 中文描述： | 低功耗點陣液晶顯示控制器/鍵掃描功能驅(qū)動程序 |
| 文件頁數(shù)： | 23/97頁 |
| 文件大?。?/td> | 513K |
| 代理商： | HD66720 |
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HD66727
23
For example (Figure 3), when the address counter is 08H, a cursor is displayed at a position corresponding
to DDRAM address “08”H.
Cursor position
Display position
DDRAM address
Note: The cursor/blink or white-black inversion control is
also active when the address counter indicates the
CGRAM or SEGRAM. However, it has no effect on the
display.
1
2
3
4
5
6
7
8
11
9
10
12
00
01
02
03
04
05
06
07
0A
08
09
0B
Figure 3 Cursor Position and DDRAM Address
Multiplexing Liquid Crystal Display Driver Circuit
The multiplexing liquid crystal display driver circuit consists of 34 common signal drivers (COM1 to
COM32, COMS1, COMS2) and 60 segment signal drivers (SEG1 to SEG60). When the number of lines
are selected by a program, the required common signal drivers automatically output drive waveforms,
while the other common signal drivers continue to output deselection waveforms.
Character pattern data is sent serially through a 60-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 60-bit data can be changed by the SGS bit. The shift direction of the common driver
can also be changed by the CMS bit; select the direction appropriate 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 V
CC
level, halting display.
Annunciator Driver Circuit
The static annunciator drivers, which are specially used for displaying icons and marks, consists of 1
common signal driver (ACOM) and 12 segment signal drivers (ASEG1 to ASEG12). Since this driver
circuit operates at the logic operating voltage (V
CC
to AGND), the LCD drive power supply circuit is not
necessary, and low-power consumption can be achieved. It is suitable for mark indication during system
standby because of its drive capability during the standby and sleep modes. When multiplexing drive is not
used, or during the standby or sleep mode, all the above common and segment signal drivers output the V
CC
level, halting display.
Tables 11 to 13 illustratate the correspondence between the annunciator addresses (AAN) and driver
signals.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66727A03TA0L | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66705U | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver(圖形LCD控制器/驅(qū)動器) |
| HD66710 | (Dot Matrix Liquid Crystal Display Controller/Driver) |
| HD66710A00FS | 16 AMP SPDT MINIATURE POWER RELAY |
| HD66710A00TF | (Dot Matrix Liquid Crystal Display Controller/Driver) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66720A01TF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66724 | 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 |
| 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 |
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