參數(shù)資料
型號： M30100
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機
文件頁數(shù)： 117/164頁
文件大?。?/td> 3302K
代理商： M30100
deveopment
A-D Converter
Tentative Specifications REV.E1
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
116
(2) Repeat mode
In repeat mode, the pin selected using the analog input pin select bit is used for repeated A-D conversion.
(See Table 1.16.3.) Figure 1.16.5 shows the A-D control register in repeat mode.
A-D control register 0 (Note 1)
Symbol
ADCON0
Address
00D6
16
When reset
00000XXX
2
b7
b6
b5
0
b4
b3 b2
1
b1
b0
Analog input pin select bit
0
is selected
0 0 1 : AN
1
is selected
0 1 0 : AN
2
is selected
0 1 1 : AN
3
is selected
1 0 0 : AN
4
, AN
8
is selected
1 0 1 : AN
5
, AN
9
is selected
1 1 0 : AN
6
, AN
10
is selected
1 1 1 : AN
7
, AN
11
is selected
CH0
Bit symbol
Bit name
Function
CH1
CH2
A-D operation mode
select bit 0
1 : Repeat mode
MD0
ADGSEL0
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
A
R
A-D control register 1 (Note 1)
Symbol
ADCON1
Address
00D7
16
When reset
00
16
Bit name
Function
Bit symbol
b7
b6
b5
1
b4
b3 b2
0
b1
0
b0
0
OPA0
OPA1
External op-amp
connection mode bit
W
A
R
b2 b1 b0
0 0 : ANEX
0
and ANEX
are not used
0 1 : ANEX
0
input is A-D converted
1 0 : ANEX
input is A-D converted
1 1 : External op-amp connection mode
b7 b6
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is
indeterminate.
Note 2: When changing A-D operation mode, set analog input pin again.
Note 3: AN
4
to AN
7
and AN
8
to AN
11
are selected by the A-D input group select bit.
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is
indeterminate.
Note 2: In repeat mode, only 8-bit mode can be used.
Note 3: When f(X
IN
) is over 10 MHz, the
φ
AD
frequency must be under 10 MHz by dividing.
Figure 1.16.5. A-D conversion register in repeat mode
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
BITS
8/10-bit mode select bit 0 : 8-bit mode
(Note 2)
VCUT
Vref connect bit
1 : Vref connected
Frequency select bit 1
0 : f
AD
/2 or f
AD
/4 is selected
1 : f
AD
is selected
CKS1
A
A
A
A
A
A
A
A
A
A
AA
Set this bit to “0”.
Set this bit to “0”. When read, their values are “0”.
(Note 2)
(Note 2, 3)
A-D input group select bit
0 : Port P0 group is selected
1 : Port P1 group is selected
A
0
(Note 3)
Item
Specification
Function
Start condition
Stop condition
Interrupt request generation timing
Input pin
Reading of result of A-D converter
Note : AN
4
to AN
7
can be used in the same way as for AN
8
to AN
11
.
The pin selected by the analog input pin select bit is used for repeated A-D conversion
Writing “1” to A-D conversion start flag
Writing “0” to A-D conversion start flag
None generated
One of AN
0
to AN
11
, as selected (Note)
Read A-D register (at any time)
Table 1.16.3. Repeat mode specifications
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