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參數(shù)資料
| 型號(hào)： | COP472MW-3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | COP472-3 Liquid Crystal Display Controller |
| 中文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 143K |
| 代理商： | COP472MW-3 |
LOADING SEQUENCE TO DRIVE A 4
(/2
-DIGIT DISPLAY
Steps:
1.
Turn CE low.
2.
Clock in 8 bits of data for digit 1.
3.
Clock in 8 bits of data for digit 2.
4.
Clock in 8 bits of data for digit 3.
5.
Clock in 8 bits of data for digit 4.
6.
Clock in 8 bits of data for special segment and control
function of BPC and BPA.
0
0
1
1
SP4
SP3
SP2
SP1
7.
Turn CS high.
Note:
CS may be turned high after any step. For example to
load only 2 digits of data, do steps 1, 2, 3, and 7.
CS must make a high to low transition before loading data in
order to reset internal counters.
LOADING SEQUENCE TO DRIVE AN
8
(/2
-DIGIT DISPLAY
Two or more COP472-3’s may be connected together to
drive additional segments. An eight digit multiplexed display
is shown in Figure 7. The following is the loading sequence
to drive an eight digit display using two COP472-3’s. The
right chip is the master and the left the slave.
Steps:
1.
Turn CS low on both COP472-3’s.
2.
Shift in 32 bits of data for the slave’s four digits.
3.
Shift in 4 bits of special segment data: a zero and three
ones.
1
1
1
0
SP4
SP3
SP2
SP1
This synchronizes both the chips and BPA is oscillator
input. Both chips are now stopped.
4.
Turn CS high to both chips.
5.
Turn CS low to master COP472-3.
6.
Shift in 32 bits of data for the master’s 4 digits.
7.
Shift in four bits of special segment data, a one and
three zeros.
0
0
0
1
SP4
SP3
SP2
SP1
This sets the master COP472-3 to BPA as a normal
backplane output and BPC as oscillator output. Now
both the chips start and run off the same oscillator.
8.
Turn CS high.
The chips are now synchronized and driving 8 digits of dis-
play. To load new data simply load each chip separately in
the normal manner, keeping the correct status bits to each
COP472-3 (0110 or 0001).
TL/DD/6932–6
FIGURE 6. System Diagram – 4
(/2
Digit Display
TL/DD/6932–7
FIGURE 7. System Diagram – 8
(/2
Digit Display
http://www.national.com
6
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| COP472N-3 | COP472-3 Liquid Crystal Display Controller |
| COP680C | Microcontrollers |
| COP681C | Microcontrollers |
| COP682C | Microcontrollers |
| COP881C | Microcontrollers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| COP472N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Controller |
| COP472N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Controller |
| COP472N-3 | 功能描述:顯示驅(qū)動(dòng)器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| COP472N-3/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Controller |
| COP472N-3/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Controller |
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