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參數(shù)資料
| 型號： | 7630 |
| 英文描述： | 7630 Group Datasheet Datasheet 840K/JAN.13.99 |
| 中文描述： | 7630組數(shù)據(jù)表數(shù)據(jù)表840K/JAN.13.99 |
| 文件頁數(shù)： | 36/49頁 |
| 文件大?。?/td> | 840K |
| 代理商： | 7630 |
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MITSUBISHI MICROCOMPUTERS
7630 Group
35
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
A-D CONVERTER
The A-D converter uses the successive approximation method with
8 bit resolution. The functional blocks of the A-D converter are
described below. Refer to Block diagram of A-D converter.
Comparison Voltage Generator
The comparison voltage generator divides the voltage between
AV
SS
and V
REF
by 256, and outputs the divided voltage.
Channel Selector
The channel selector selects one of ports P0
0
/AN
0
to P0
7
/AN
7
, and
inputs its voltage to the comparator.
A-D conversion register AD
The A-D conversion register is a read-only register that stores the
result of an A-D conversion. This register must not be read during
an A-D conversion.
Fig. 39
Block diagram of A-D converter
A-D control register (Structure of A-D control reg-
ister)
The A-D control register controls the A-D conversion process. Bits 0
to 2 select a specific analog input pin. Bit 3 signals the completion
of an A-D conversion. The value of this bit remains “0” during an A-
D conversion, and changes to “1” when an A-D conversion ends.
Writing “0” to this bit starts the A-D conversion. Bit 4 is the V
REF
/
Input switch bit.
AV
SS
P0
0
/AN
0
3
A-D control register
b7
b0
comparison voltage
generator
A-D control circuit
Comparator
P0
7
/AN
7
V
REF
A-D interrupt request
A-D conversion register
c
Data bus
V
REF
/Input switch bit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| 7630.B | 制造商:GT LINE 功能描述:CASE, EXPLORER |
| 7630_03 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
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