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PD16641 データシート(PDF) 7 Page - Renesas Technology Corp

部品番号 PD16641
部品情報  240-OUTPUT TFT-LCD SOURCE DRIVER (64-GRAY SCALES)
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メーカー  RENESAS [Renesas Technology Corp]
ホームページ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

PD16641 データシート(HTML) 7 Page - Renesas Technology Corp

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Data Sheet S10565EJ2V0DS
5
µ PD16641
4. RELATION BETWEEN INPUT DATA AND OUTPUT VOLTAGE VALUE
The 11 major points on the
γ-characteristic curve of the LCD panel are arbitrarily set by external power supplies V0
through V10. If the display data is 00H or 3FH, gray scale voltage V0 or V10 is output. If the display data is in the range
01H to 3EH, the high-order 3 bits select an external powers pair Vn+1, Vn. The low-order 3 bits evenly divide the range of
Vn+1, Vn into eight segments by means of D/A conversion (however, the ranges from V9-V8 and from V2-V1 are divided into
seven segments) to output a 64-grayscale voltage.
DX5
(MSB)
DX4
DX3
DX2
DX1
DX0
(LSB)
DX5
DX4
DX3
Vn+1-Vn
00
0
V1-V2
00
1
V2-V3
01
0
V3-V4
01
1
V4-V5
10
0
V5-V6
10
1
V6-V7
11
0
V7-V8
11
1
V8-V9
Vn
Vn+1
000
1
001
2
010
3
011
4
100
5
101
6
110
7
111
8
DX2-DX0
High-order 3 bits :
γ-corrected power selected
(Vn+1-Vn
)
Low-order 3 bits : 3-bit D/A
(range Vn-Vn+1
is divided into 7 or 8 segments)
Figure 4
−1. Relation between Input Data and
γ -corrected Voltage
3F
37
2F
27
1F
17
0F
07
00
V10
VSS2
V9
V8
V7
V6
V5
V4
V3
V2
V1
V0
VDD2
gray scale supply specified
by 00H
7 segments
8 segments
8 segments
8 segments
8 segments
8 segments
8 segments
7 segments
gray scale supply specified
by 3FH
Input data (HEX)


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