Renesas M16C FAMILY series Hardware Manual page 252

M 1 6 C 2 / 8 G o r u p ( M 1 6 C
A/D Control Register 0
b7
NOTES:
A/D Control register 1
b7
A/D Control Register 2
b7 b6
NOTES:
1. If the ADCON2 register is rewritten during A/D conversion, the conversion result will be indeterminate.
Figure 15.15 ADCON0 to ADCON2 Registers in Repeat Sweep Mode 1
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)
b6 b5 b4 b3 b2 b1 b0
Symbol
1 1
ADCON0
Bit Symbol
CH0
CH1
CH2
MD0
MD1
TRG
ADST
CKS0
1. If the ADCON0 register is rewritten during A/D conversion, the conversion result will be indeterminate.
(1)
b6 b5 b4 b3 b2 b1 b0
Symbol
1 1
ADCON1
Bit Symbol
SCAN0
SCAN1
MD2
BITS
CKS1
VCUT
(b7-b6)
1. If the ADCON1 register is rewritten during A/D conversion, the conversion result will be indeterminate.
2. AN0 to AN0 and AN2 to AN2 can be used in the same way as AN
0 7 0 7
Use the ADGSEL1 to ADGSEL0 bits in the ADCON2 register to select the desired pin.
3. 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.
(1)
b5 b4 b3 b2 b1 b0
Symbol
0 0
ADCON2
Bit Symbol
SMP
ADGSEL0
ADGSEL1
(b3)
CKS2
TRG1
(b7-b6)
page 232
f o 3 8 5
Address After Reset
03D6 00000XXX
16 2
Bit Name
Analog Input Pin Invalid in repeat sweep mode 1
Select Bit
b4 b3
A/D Operation Mode
1 1 : Repeat sweep mode 0 or
Select Bit 0
Repeat sweep mode 1
0 : Software trigger
Trigger Select Bit
1 : Hardware trigger (AD
A/D Conversion Start 0 : A/D conversion disabled
Flag 1 : A/D conversion started
Refer to Table 15.2
Frequency Select Bit 0
Address After Reset
03D7 00
16 16
Bit Name
When selecting repeat sweep mode 1
A/D Sweep Pin
(2)
Select Bit
b1 b0
0 0 : AN (1 pin)
0
0 1 : AN to AN
0
1 0 : AN to AN
0
1 1 : AN to AN
0
A/D Operation Mode
1 : Repeat sweep mode 1
Select Bit 1
8/10-Bit Mode Select Bit 0 : 8-bit mode
1 : 10-bit mode
Refer to Table 15.2
Frequency Select Bit 1
(3)
Vref Connect Bit 1 : Vref connected
Nothing is assigned. When write, set to "0".
When read, its content is "0".
to AN
0
Address After Reset
03D4 00
16 16
Bit Name
0 : Without sample and hold
A/D Conversion Method
1 : With sample and hold
Select Bit
b2 b1
A/D Input Group
0 0 : Select port P10 group
Select Bit
0 1 : Do not set
1 0 : Select port P0 group
1 1 : Select port P1/P9 group
Reserved Bit "0"
Set to
Frequency Select Bit 2 Refer to Table 15.2
Trigger Select Bit 1 Set to "0" in repeat sweep mode 1
Nothing is assigned. When write, set to "0".
When read, its content is "0".
Function RW
RW
RW
RW
RW
RW
RW
trigger)
TRG
RW
RW
Function
RW
RW
(2 pins)
1
(3 pins)
2
RW
(4 pins)
3
RW
RW
RW
RW
.
7
Function RW
RW
RW
RW
RW
RW
RW
15. A/D Converter