參數(shù)資料
型號(hào)： UPD161622
英文描述： UPD161622 Data Sheet | Data Sheet[08/2003]
中文描述： UPD161622數(shù)據(jù)表|數(shù)據(jù)表[08/2003]
文件頁(yè)數(shù)： 6/20頁(yè)
文件大?。?/td> 157K
代理商： UPD161622
Data Sheet S15859EJ1V0DS
6
μ
PD160040
5. RELATIONSHIP BETWEEN INPUT DATA AND OUTPUT VOLTAGE VALUE
The
μ
PD160040 incorporates a 8-bit D/A converter whose odd output pins and even output pins output respectively
gray scale voltages of differing polarity with respect to the LCD’s counter electrode voltage. The D/A converter
consists of ladder resistors and switches.
The ladder resistors (r
0
to r
253
) are designed so that the ratio of LCD panel (
γ
-compensated voltages to V
0
’-V
255
’ and
V
0
”-V
255
” is almost equivalent as shown in Figure 5
2. For the 2 sets of eight
γ
-compensated power supplies, V
0
-V
7
and V
8
-V
15
, respectively, input gray scale voltages of the same polarity with respect to the 0.5 V
DD2
.
Figure 5
1 shows the relationship between the driving voltages such as liquid-crystal driving voltages V
DD2
, V
SS2
and
0.5 V
DD2
, and
γ
-corrected voltages V
0
to V
15
and the input data. Be sure to maintain the voltage relationships below.
V
DD2
– 0.2 V
≥
V
0
> V
1
> V
2
> V
3
> V
4
> V
5
> V
6
> V
7
≥
0.5 V
DD2
+ 0.5 V
0.5 V
DD2
– 0.5 V
≥
V
8
> V
9
> V
10
> V
11
> V
12
> V
13
> V
14
> V
15
≥
V
SS2
+ 0.2 V
Also, V
6
-V
7
and V
8
-V
9
are left open in the IC. Be sure to input the gray scale level power supply at a constant level
to the all pins, as V
0
-V
15
.
Figures 5
3 shows the relationship between the input data and the output voltage.
Figure 5
1. Relationship between Input Data and
γ
-corrected Power Supplies
V
DD2
V
0
V
1
V
2
V
3
V
4
V
5
V
6
V
7
0.5 V
DD2
V
8
V
9
V
10
V
11
V
12
V
13
V
14
V
15
V
SS2
00 01
20
40
80
C0
F0
FF
Input Data (HEX)
0.2 V
0.2 V
0.5 V
0.5 V
相關(guān)PDF資料
PDF描述
UPD161623 UPD161623 Data Sheet | Data Sheet[07/2002]
UPD161641 UPD161641 Data Sheet | Data Sheet[07/2002]
UPD161643 UPD161643 Data Sheet | Data Sheet[02/2003]
UPD161644 UPD161644 Preliminary Product Information | Preliminary Product Information[10/2002]
UPD161660 UPD161660 Data Sheet | Data Sheet[05/2002]
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD161622P 制造商:NEC 制造商全稱:NEC 功能描述:396 OUTPUT TFT-LCD SOURCE DRIVER WITH RAM
UPD161623 制造商:NEC 制造商全稱:NEC 功能描述:528 OUTPUT TFT-LCD SOURCE DRIVER WITH RAM
UPD161623P 制造商:NEC 制造商全稱:NEC 功能描述:528 OUTPUT TFT-LCD SOURCE DRIVER WITH RAM
UPD161641 制造商:NEC 制造商全稱:NEC 功能描述:240-OUTPUT TFT-LCD GATE DRIVER
UPD161641N 制造商:NEC 制造商全稱:NEC 功能描述:240-OUTPUT TFT-LCD GATE DRIVER
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