參數(shù)資料
型號(hào)： M30201M4T
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機(jī)
文件頁數(shù)： 97/159頁
文件大?。?/td> 2319K
代理商： M30201M4T
Unde
A-D Converter
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
97
Item
Specification
Function
All pins perform repeat sweep A-D conversion, with emphasis on the pin or
pins selected by the A-D sweep pin select bit
Example : AN
0
selected AN
0
AN
1
AN
0
AN
2
AN
0
AN
3
, etc
Writing “1” to A-D conversion start flag
Writing “0” to A-D conversion start flag
None generated
AN
0
(1 pin), AN
0
and AN
1
(2 pins), AN
0
to AN
2
(3 pins), AN
0
to AN
3
(4 pins) (Note)
Read A-D register corresponding to selected pin (at any time)
Note : AN
50
to AN
54
can be used in the same way as for AN
0
to AN
4
.
Start condition
Stop condition
Interrupt request generation timing
Input pin
Reading of result of A-D converter
(5) Repeat sweep mode 1
In repeat sweep mode 1, all pins are used for A-D conversion with emphasis on the pin or pins selected using
the A-D sweep pin select bit. (See Table 1.35.) Figure 1.89 shows the A-D control register in repeat sweep mode
Table 1.35. Repeat sweep mode 1 specifications
Figure 1.89. A-D conversion register in repeat sweep mode 1
A-D control register 0 (Note)
b7
b6
b5
b4
b3 b2
0
1 1
Symbol
ADCON0
Address
03D6
16
When reset
00000XXX
2
b1
b0
Analog input pin select bit
Invalid in repeat sweep mode 1
CH0
Bit symbol
Bit name
Function
CH1
CH2
A-D operation mode
select bit 0
MD0
MD1
ADST
A-D conversion start flag
0 : A-D conversion disabled
1 : A-D conversion started
Frequency select bit 0
0 : f
AD
/4 is selected
1 : f
AD
/2 is selected
CKS0
W
R
A-D control register 1 (Note 1)
b7
b6
b5
b4
b3 b2
0
1
1
Symbol
ADCON1
Address
03D7
16
When reset
00
16
Bit name
Function
Bit symbol
b1
b0
A-D sweep pin select bit
SCAN0
SCAN1
MD2
BITS
8/10-bit mode select bit
0 : 8-bit mode
1 : 10-bit mode
VCUT
Vref connect bit
ADGSEL0
A-D operation mode
select bit 1
Set “1” in this mode.
1 : Vref connected
A-D input group select bit
W
R
b4 b3
0 : Port P6 group is selected
1 : Port P5 group is selected
Note: If the A-D control register is rewritten during A-D conversion, the conversion result is indeterminate.
Frequency select bit 1
0 : f
AD
/2 or f
AD
/4 is selected
1 : f
AD
is selected
CKS1
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is indeterminate.
Note 2: AN
50
to AN
54
can be used in the same way as for AN
0
to AN
4
.
Note 3: If port P5 group is selected, the contents of A-D registers 5 to 7 are indeterminate.
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
Set this bit to “0”.
Set this bit to “0”.
When single sweep and repeat sweep
mode 1 are selected
b1 b0
0 0 : AN
0
(1 pins)
0 1 : AN
0
, AN
1
(2 pins)
1 0 : AN
0
to AN
2
(3 pins)
1 1 : AN
0
to AN
3
(4 pins)
(Note 2, 3)
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