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參數(shù)資料
| 型號(hào)： | UPD16681P-011 |
| 廠商： | NEC Corp. |
| 英文描述： | LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
| 中文描述： | LCD控制器/的點(diǎn)陣顯示為JIS 1級(jí)和日標(biāo)平驅(qū)動(dòng)2漢字集 |
| 文件頁(yè)數(shù)： | 7/56頁(yè) |
| 文件大?。?/td> | 906K |
| 代理商： | UPD16681P-011 |
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Data Sheet S13104EJ5V0DS00
7
μ
PD16681
3.3 Driver System Pins
Pin Symbol
Pin Name
Pad No.
I/O
Description
SEG
1
- SEG
96
Segment
115-210
O
Segment output pins
COM
1
-
COM
51
Common
85-105
109-112
211-216
220-239
O
Common output pins
1/52 duty : Use COM
1
to COM
51
.
1/39 duty : Use COM
1
to COM
19
, COM
27
to COM
45
,
leave COM
20
to COM
26
, COM
46
to COM
51
open.
PCOM
1
,
PCOM
2
Pictograph common
240
114
O
Common output pins for pictographs
The same signal is output from PCOM
1
and PCOM
2
.
AMP
IN(+)
Op amp inputs
10-13
I
These are input pins for the op amp that regulates the LCD driver
voltage.
Leave the AMP
IN(+)
pin unconnected when using the on-chip D/A
converter. When not using the D/A converter, a reference voltage must
AMP
IN(
)
be input.
Connect the AMP
IN(
)
pin to a resistor used to regulate the LCD voltage.
(See diagram below.)
AMP
OUT
Op amp outputs
8,9
O
These are output pins for the op amp that regulates the LCD driver
voltage. Normally, they are connected to resistors that are used to
regulate the LCD voltage. (See diagram below.)
Since the AMP
OUT
pins are used to stabilize the on-chip amp’s output, we
recommend connecting them to a capacitor that is rated between 0.1 and
1.0
μ
F.
DUMMY
DUMMY pins
1,81-84,
106-108,
113,
217-219,
241
DUMMY pins are not connected to the internal circuit. Leave open if they
are not used.
Figure 3-1. Voltage Control Circuit
D/A
converter
AMP
IN(
)
AMP
OUT
V
LC1
V
SS
V
EXT
V
LC2
V
LC3
V
LC4
V
LC5
V
LCBS1
V
LCBS2
V
LCBS3
DA
CHA
AMP
IN(+)
R
1
R
2
C
1
+
Reference power supply circuit
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| UPD16681W-011 | 制造商:NEC 制造商全稱:NEC 功能描述:LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
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