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): 37/49頁
文件大?。?/td> 840K
代理商: 7630
36
MITSUBISHI MICROCOMPUTERS
7630 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 40
Structure of A-D control register
A-D Converter Operation
The comparator and control circuit reference an analog input volt-
age with the reference voltage, then stores the result in the A-D
conversion register. When an A-D conversion is complete, the con-
trol circuit sets the A-D conversion completion bit and the A-D inter-
rupt request bit to “1”. The result of A-D conversion can be obtained
from the A-D conversion register, AD (address 0014
16
).
Note that the comparator is linked to a capacitor, so set f(X
IN
) to 500
kHz or higher during A-D conversion.
7
0
A-D control register (address 0015
16
)
ADCON
Analog input pin selection bits
b2 b1 b0
0 0 0 :
P0
0
/AN
0
0 0 1 :
P0
1
/AN
1
0 1 0 :
P0
2
/AN
2
0 1 1 :
P0
3
/AN
3
1 0 0 :
P0
4
/AN
4
1 0 1 :
P0
5
/AN
5
1 1 0 :
P0
6
/AN
6
1 1 1 :
P0
7
/AN
7
A-D conversion completion bit
0 :
Conversion in progress
1 :
Conversion completed
V
REF
/Input switch bit
0 :
1 :
Off
On
Not used (“0” when read, do not write “1”)
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