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參數(shù)資料
| 型號： | NT7502H-TABF1 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 65 X 132 RAM-Map LCD Controller / Driver |
| 中文描述： | 65 × 132 RAM的地圖LCD控制器/驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 15/54頁 |
| 文件大?。?/td> | 687K |
| 代理商： | NT7502H-TABF1 |
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NT7502
Table 6 shows the relationship between oscillation frequency and frame frequency
Table. 6
Duty
Item
f
CL
f
OSC
/6
f
FR
On-chip oscillator is used
On-chip oscillator is not used
On-chip oscillator is used
On-chip oscillator is not used
On-chip oscillator is used
On-chip oscillator is not used
On-chip oscillator is used
On-chip oscillator is not used
f
CL
/(2 X 65)
f
CL
/(2 X 65)
f
CL
/(2 X 55)
f
CL
/(2 X 55)
f
CL
/(2 X 49)
f
CL
/(2 X 49)
f
CL
/(2 X 33)
f
CL
/(2 X 33)
1/65
External input f
CL
f
OSC
/8
External input f
CL
f
OSC
/8
External input f
CL
f
OSC
/12
External input f
CL
1/55
1/49
1/33
Common Output Control Circuit
This circuit controls the relationship between the number of common output and specified duty ratio. Common output mode
select instruction specifies the scanning direction of the common output pads.
Table. 7
Common output pads
COM
[27-36]
NC
NC
NC
NC
NC
NC
COM[0-63]
COM[63-0]
Duty
Status
COM
[0-15]
COM[0-15]
COM
[16-23]
COM
[24-26]
COM
[37-39]
COM
[40-47]
COM
[48-63]
COM[16-31]
COM[15-0]
COMS
Normal
Reverse COM[31-16]
Normal
Reverse
Normal
Reverse
Normal
1/33
COMS
COM[0-23]
COM[47-24]
COM[24-47]
COM[23-0]
1/49
COMS
COM[0-26]
COM[53-27]
COM[27-53]
COM[26-0]
1/55
COMS
1/65
Reverse
COMS
This is a 197-channel multiplexes that generate voltage levels for driving the liquid crystal. The combination of the display data,
the COM scan signal, and the FR signal produces the liquid crystal drive voltage output.
Figure 6 shows example of the SEG and COM output wave form.
Configuration Setting
The NT7502 has two optional configurations, configured by DUTY0, DUTY1
DUTY1, DUTY0
Common
Segment
V1
V2
V3
V4
1, 1
65
132
8/9V0, 6/7V0
7/9V0, 5/7V0
2/9V0, 2/7 V0
1/9V0, 1/7V0
1, 0
55
132
7/8V0, 5/6V0
6/8V0, 4/6V0
2/8V0, 2/6 V0
1/8V0, 1/6V0
0, 1
49
132
7/8V0, 5/6V0
6/8V0, 4/6V0
2/8V0, 2/6 V0
1/8V0, 1/6V0
0, 0
33
132
5/6V0, 4/5V0
4/6V0, 3/5V0
2/6 V0, 2/5V0
1/6V0, 1/5V0
15
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