参数资料
型号: M30623MAA-XXXGP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 14 MM, 0.65 MM PITCH, PLASTIC, QFP-80
文件页数: 41/143页
文件大小: 3168K
代理商: M30623MAA-XXXGP
A-D Converter
Mitsubishi microcomputers
M16C / 62A Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
132
(2) Repeat mode
In repeat mode, the pin selected using the analog input pin select bit is used for repeated A-D conversion.
Table 1.15.3 shows the specifications of repeat mode. Figure 1.15.5 shows the A-D control register in
repeat mode.
A-D control register 0 (Note 1)
Symbol
Address
When reset
ADCON0
03D616
00000XXX2
b7
b6
b5
b4
b3
b2
b1
b0
Analog input pin
select bit
CH0
Bit symbol
Bit name
Function
CH1
CH2
A-D operation mode
select bit 0
MD0
MD1
Trigger select bit
0 : Software trigger
1 : ADTRG trigger
TRG
ADST
A-D conversion start flag
0 : A-D conversion disabled
1 : A-D conversion started
Frequency select bit 0
0 : fAD/4 is selected
1 : fAD/2 is selected
CKS0
W
R
A-D control register 1 (Note)
Symbol
Address
When reset
ADCON1
03D716
0016
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
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
OPA0
Vref connect bit
OPA1
A-D operation mode
select bit 1
1 : Vref connected
External op-amp
connection mode bit
W
R
01
Invalid in repeat mode
0
0 0 0 : AN0 is selected
0 0 1 : AN1 is selected
0 1 0 : AN2 is selected
0 1 1 : AN3 is selected
1 0 0 : AN4 is selected
1 0 1 : AN5 is selected
1 1 0 : AN6 is selected
1 1 1 : AN7 is selected
(Note 2)
b2 b1 b0
0 1 : Repeat mode
(Note 2)
b4 b3
0 0 : ANEX0 and ANEX1 are not used
0 1 : ANEX0 input is A-D converted
1 0 : ANEX1 input is A-D converted
1 1 : External op-amp connection mode
b7 b6
1
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.
Frequency select bit 1
0 : fAD/2 or fAD/4 is selected
1 : fAD is selected
CKS1
Set to “0” when this mode is selected
Note: If the A-D control register is rewritten during A-D conversion, the conversion
result is indeterminate.
Figure 1.15.5. A-D conversion register in repeat mode
Item
Specification
Function
The pin selected by the analog input pin select bit is used for repeated A-D conversion
Star condition
Writing “1” to A-D conversion start flag
Stop condition
Writing “0” to A-D conversion start flag
Interrupt request generation timing
None generated
Input pin
One of AN0 to AN7, as selected
Reading of result of A-D converter
Read A-D register corresponding to selected pin (at any time)
Table 1.15.3. Repeat mode specifications
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