參數(shù)資料
型號: UPD16681
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/的點陣顯示為JIS 1級和日標(biāo)平驅(qū)動2漢字集
文件頁數(shù): 12/56頁
文件大?。?/td> 906K
代理商: UPD16681
Data Sheet S13104EJ5V0DS00
12
μ
PD16681
4.5 Bias Value Settings
The bias value can be set as 1/6 bias, 1/7 bias, or 1/8 bias by selecting an internal bias for the (
μ
PD16681 and by
connecting externally from the IC among V
LCBS1
, V
LCBS2
, and V
LCBS3
pins.
Bias Value
Connected Pin
1/8 bias
V
LCBS1
, V
LCBS2
, and V
LCBS3
leave open
1/7 bias
Between V
LCBS1
and V
LCBS2
or between V
LCBS2
and
V
LCBS3
1/6 bias
Between V
LCBS1
and V
LCBS3
and V
LCBS2
leave open
4.6 Power Supply Circuit Use Example
Figure 4-5. Using Internal Power Supply and Normal Mode
V
DD
To V
DD
V
LCD
C
1
C
1
C
2
C
2
C
3
C
3
V
SS
V
LC5
V
LC4
V
LC3
V
LC2
V
LC1
AMP
OUT
AMP
(
)
AMP
(+)
V
EXT
R
2
R
th
(thermistor)
R
1
C
2
C
1
C
1
C
1
V
DD
V
LCD
C
3
open
V
CHA
V
SS
V
EXT
C
2
C
1
+
+
+
+
AMP
CHA
V
DD
C
1
C
2
C
3
open
C
2
C
1
C
1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
A) 4x boost (D/A converter is not used.)
B) 3x boost
Remarks 1.
C
1
= 1.0
μ
F,C
2
= 1.0
μ
F
2.
Leave C
2+
and C
3
pins open during 3x boost.
3.
Leave AMP
(+)
open when using the D/A converter.
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