Circuit Descriptions
7.
7.4.16 Gamma & VCOM
U7001 stores gamma and V-COM data, the data is depends on
the LCD panel, gamma data can be auto written 3 times by the
software initially or written by tooling via CN7003.
Figure 7-18 Gamma & VCOM
19090_223_110505.eps
110505
VCOML
VCOM
GMA1
6
GMA4
GMA13
GMA
3
VCOMRFB
VCOM
LFB
VCOM
_FB
VCOM_FB
GMA12
GMA1
5
GMA7
VCOM
GMA6
VCOMR
OSDA0
OSCL0
To
u
ch
K
e
yI
IC
TCON_VCC
TCON_VDD
O
S
CL
0
12,15,16
OSDA0
12,15,16
U7001
MAX
U7001
MAX
SDA
1
A0
2
DVDD
3
AGND_AMP
4
VCOM
5
V
C
OM_FB
6
AVD
D
_
AMP
7
AVD
D
8
N.
C.
9
GMA
1
10
GMA2
11
GMA3
12
GMA4
13
GMA5
14
GMA6
15
AVD
D
16
N.
C.
17
GMA7
1
8
GMA
8
19
S
CL
20
Therm
a
l P
a
d
21
R7010
20R 5% 1/16W
R7010
20R 5% 1/16W
CN7003
CONN
CN7003
CONN
1
2
3
4
R
7096
4.7K
R
7096
4.7K
R7011
0R05OHM1/16W
R7011
0R05OHM1/16W
C7005
10uF 25V
C7005
10uF 25V
C7057
10uF 10V
C7057
10uF 10V
R7095
NC/0R05 1/16W
R7095
NC/0R05 1/16W
R7088
100R 1/16W 5%
R7088
100R 1/16W 5%
R7016
1K 1/16W 5%
R7016
1K 1/16W 5%
R
7005
1K 1/16W
5
%
R
7005
1K 1/16W
5
%
C7004
100N 16V
C7004
100N 16V
R7004
20R 5% 1/16W
R7004
20R 5% 1/16W
C7010
100N 25V
C7010
100N 25V
Q7001
2N7002
Q7001
2N7002
Q7000
2N7002
Q7000
2N7002
R7089
100R 1/16W 5%
R7089
100R 1/16W 5%
R7
0
9
1
10K 1/16W
5
%
R7
0
9
1
10K 1/16W
5
%
R
7006
1K 1/16W
5
%
R
7006
1K 1/16W
5
%
R7012
0R05OHM1/16W
R7012
0R05OHM1/16W
C7018
100N 25V
C7018
100N 25V
R7092
NC/0R05 1/16W
R7092
NC/0R05 1/16W
Q7003
2N7002
Q7003
2N7002
Q7002
2N7002
Q7002
2N7002