M16C30L Datasheet, PDF (133/166 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

A-D Converter
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
A-D control register 0 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
ADCON0
Address When reset
03D616 00000XXX2
Bit symbol
CH0
CH1
CH2
MD0
MD1
Bit name
Analog input pin select bit
A-D operation mode
select bit 0
Function
b2 b1 b0
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
b4 b3
0 0 : One-shot mode
Must not be set except “00”
RW
TRG
Trigger select bit
0 : Software trigger
1 : ADTRG trigger
ADST
A-D conversion start flag 0 : A-D conversion disabled
1 : A-D conversion started
CKS0
Frequency select bit 0
0 : fAD/4 is selected
1 : fAD/2 is selected
Note: If the A-D control register is rewritten during A-D conversion, the conversion result is
indeterminate.
A-D control register 1 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
000
Symbol
ADCON1
Address
03D716
When reset
0016
Bit symbol
Reserved bit
Bit name
Function
Must always be set to “0”
RW
BITS
8/10-bit mode select bit
0 : 8-bit mode
1 : 10-bit mode
CKS1 ^{Frequency select bit 1}
0 : fAD/2 or fAD/4 is selected
1 : fAD is selected
VCUT
Vref connect bit
0 : Vref not connected
1 : Vref connected
OPA0
OPA1
External op-amp
connection mode bit
b7 b6
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
Note: If the A-D control register is rewritten during A-D conversion, the conversion result is
indeterminate.
Figure 1.17.2. A-D converter-related registers (1)
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