Renesas M16C FAMILY series Hardware Manual page 246

M 1 6 C 2 / 8 G o r u p ( M 1 6 C
A/D Control Register 0
b7 b6
NOTES:
1. If the ADCON0 register is rewritten during A/D conversion, the conversion result will be indeterminate.
2. AN0
ADGSEL0 bits in the ADCON2 register to select the desired pin.
3. After rewriting the MD1 to MD0 bits, set the CH2 to CH0 bits over again using an another instruction.
A/D Control Register 1
b7 b6
NOTES:
1. If the ADCON1 register is rewritten during A/D conversion, the conversion result will be indeterminate.
2. If the VCUT bit is reset from "0" (Vref unconnected) to "1" (Vref connected), wait for 1 µs or more before starting
A/D conversion.
A/D Control Register 2
b7 b6
NOTES:
Figure 15.9 ADCON0 to ADCON2 Registers in Repeat Mode
R e . v 2 0 . 0 J a . n 3 , 1 2 0 0 7
R E J 0 9 B 0 0 4 7 0 - 2 0 0
2 / , 8 M 1 6 C 2 / 8 ) B
(1)
b5 b4 b3 b2 b1 b0
Symbol
0 1
ADCON0
Bit Symbol
Analog Input Pin
CH0
Select Bit
CH1
CH2
MD0
A/D Operation Mode
Select Bit 0
MD1
Trigger Select Bit
TRG
A/D Conversion Start
ADST
Flag
CKS0 Frequency Select Bit 0
to AN0 and AN2 to AN2 can be used in the same way as AN
0 7 0 7
(1)
b5 b4 b3 b2 b1 b0
Symbol
1 0
ADCON1
Bit Symbol
A/D Sweep Pin
SCAN0
Select Bit
SCAN1
A/D Operation Mode
MD2
Select Bit 1
8/10-Bit Mode Select Bit
BITS
CKS1
Frequency Select Bit 1
VCUT Vref connect bit
Nothing is assigned. When write, set to "0".
(b7-b6)
When read, its content is "0".
(1)
b5 b4 b3 b2 b1 b0
Symbol
0 0
ADCON2
Bit Symbol
SMP
ADGSEL0
ADGSEL1
(b3)
CKS2
TRG1
(b7-b6)
1. If the ADCON2 register is rewritten during A/D conversion, the conversion result will be indeterminate.
page 226
f o 3 8 5
Address After Reset
03D6 00000XXX
16
Bit Name
b2 b1 b0
0 0 0 : Select AN
(2, 3)
0 0 1 : Select AN
0 1 0 : Select AN
0 1 1 : Select AN
1 0 0 : Select AN
1 0 1 : Select AN
1 1 0 : Select AN
1 1 1 : Select AN
b4 b3
0 1 : Repeat mode
(3)
0 : Software trigger
1 : Hardware trigger (AD
0 : A/D conversion disabled
1 : A/D conversion started
Refer to Table 15.2
to AN . Use the ADGSEL1 to
0 7
Address After Reset
03D7 00
16 16
Bit Name
Invalid in repeat mode
0 : Any mode other than repeat sweep
mode 1
0 : 8-bit mode
1 : 10-bit mode
Refer to Table 15.2
1 : Vref connected
(2)
Address After Reset
03D4 00
16
Bit Name
A/D Conversion Method 0 : Without sample and hold
Select Bit 1 : With sample and hold
b2 b1
A/D Input Group Select
0 0 : Select port P10 group
Bit
0 1 : Do not set
1 0 : Select port P0 group
1 1 : Select port P1/P9 group
"0"
Reserved Bit Set to
Frequency Select Bit 2
See Table 15.2
Trigger Select Bit 1
Set to "0" in repeat mode
Nothing is assigned. When write, set to "0".
When read, its content is "0".
2
Function RW
0 RW
1
2
3 RW
4
5
6
RW
7
RW
RW
RW
trigger)
TRG
RW
RW
Function
RW
RW
RW
RW
RW
RW
RW
16
Function RW
RW
RW
RW
RW
RW
RW
15. A/D Converter