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参数资料
型号： M30600E8GP
元件分类： 微控制器/微处理器
英文描述： 16-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP100
封装： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数： 134/139页
文件大小： 1782K
代理商： M30600E8GP
Mitsubishi microcomputers
M16C / 60 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
A-D Converter
94
(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. Table 1.40 shows the specifications of repeat sweep mode 1. Figure
1.78 shows the configuration of the A-D control register in repeat sweep mode 1.
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 : AN0 selected
AN0
AN1
AN0
AN2
AN0
AN3, etc
Start 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
AN0 (1 pin), AN0 and AN1 (2 pins), AN0 to AN2 (3 pins), AN0 to AN3 (4 pins)
Reading of result of A-D converter
Read A-D register corresponding to selected pin (at any time)
Table 1.40. Repeat sweep mode 1 specifications
A-D control register 0 (Note)
Symbol
Address
When reset
ADCON0
03D616
00000XXX2
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
Analog input pin
select bit
CH0
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 1)
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
1 : Repeat sweep mode 1
OPA1
A-D operation mode
select bit 1
1 : Vref connected
External op-amp
connection mode
bit (Note 2)
W
R
1 1
Invalid in repeat sweep mode 1
1
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result
is indeterminate.
Note 2: Neither ‘01’ nor ‘10’ can be selected with the external op-amp connection mode bit.
1 1 : Repeat sweep mode 1
b4 b3
When repeat sweep mode 1 is selected
0 0 : AN0 (1 pin)
0 1 : AN0, AN1 (2 pins)
1 0 : AN0 to AN2 (3 pins)
1 1 : AN0 to AN3 (4 pins)
b1 b0
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: If the A-D control register is rewritten during A-D conversion, the conversion result
is indeterminate.
Frequency select bit 1
0 : fAD/2 or fAD/4 is selected
1 : fAD is selected
CKS1
Figure 1.78. Configuration of A-D conversion register in repeat sweep mode 1
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