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參數(shù)資料
| 型號： | M38C35MCMXXXFS |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 29/62頁 |
| 文件大?。?/td> | 881K |
| 代理商： | M38C35MCMXXXFS |
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29
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C3 Group
Duty
ratio
1
2
3
4
Voltage value
V
L3
=V
LCD
V
L2
=2/3 V
LCD
V
L1
=1/3 V
LCD
V
L3
=V
LCD
V
L2
=V
L1
=1/2 V
LCD
V
L3
=V
LCD
V
L2
=V
L1
=V
SS
Bias Control and Applied Voltage to LCD Power
Input Pins
To the LCD power input pins (V
L1
–V
L3
), apply the voltage value shown
in Table 8 according to the bias value.
Select a bias value by the bias control bit (bit 2 of the LCD mode
register).
Common Pin and Duty Ratio Control
The common pins (COM
0
–COM
3
) to be used are determined by duty
ratio.
Select duty ratio by the duty ratio selection bits (bits 0 and 1 of the
LCD mode register).
When selecting 1-duty ratio, 1/1 bias can be used.
Fig. 29 Example of circuit at each bias
Table 8 Bias control and applied voltage to V
L1
–V
L3
Bias value
1/3 bias
1/2 bias
1/1 bias
(1-duty ratio)
Note 1:
V
LCD
is the maximum value of supplied voltage for the LCD panel.
Table 9 Duty ratio control and common pins used
Notes 1:
COM
1
, COM
2
, and COM
3
are open.
2:
COM
2
and COM
3
are open.
3:
COM
3
is open.
Common pins used
COM
0
(Note 1)
COM
0
, COM
1
(Note 2)
COM
0
–COM
2
(Note 3)
COM
0
–COM
3
Bit 1
0
0
1
1
Bit 0
0
1
0
1
Duty ratio selection bit
R4
R5
R4 = R5
Contrast control
1/2 bias
V
L3
Contrast control
R1
R2
R3
R1 = R2 = R3
1/3 bias
R6
Contrast control
1/1 bias
V
L1
V
L2
V
L3
V
L1
V
L2
V
L3
V
L1
V
L2
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