Renesas M16C/26A Series Hardware Manual page 228

16-bit single-chip microcomputer m16c family / m16c/tiny series
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M
1
6
C
2 /
6
A
G
o r
u
p
(
M
1
6
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. Do not write "1" in delayed trigger mode 1. When write, set to "0".
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. AN
3. If the VCUT bit is reset from "0" (V
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.
2. Set to "1" in delayed trigger mode 1.
Figure 14.1.8.4 ADCON0 to ADCON2 Registers in Delayed Trigger Mode 1
R
e
. v
2
0 .
0
F
e
b
1 .
, 5
2
0
0
7
R
E
J
0
9
B
0
2
0
2
0 -
2
0
0
C
2 /
6
, A
M
1
6
C
2 /
6
, B
M
1
6
(1)
b5
b4
b3
b2
b1
b0
Symbol
0
0
0
1
1
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
(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
V
REF
Nothing is assigned. When write, set to "0".
(b7-b6)
When read, its content is "0".
to AN
can be used in the same way as AN
30
32
register to select the desired pin.
unconnected) to "1" (V
REF
conversion.
(1)
b5
b4
b3
b2
b1
b0
Symbol
1
0
1
ADCON2
Bit symbol
A/D Conversion Method
SMP
Select Bit
A/D Input Group
ADGSEL0
Select Bit
ADGSEL1
Reserved Bit
(b3)
Frequency Select Bit 2
CKS2
Trigger Select Bit 1
TRG1
Nothing is assigned. When write, set to "0".
(b7-b6)
When read, its content is "0".
page 209
f o
3
2
9
C
2 /
6
) T
Address
After reset
03D6
00000XXX
16
2
Bit name
b2 b1 b0
1 1 1 : Set to "111b" in delayed trigger
mode 1
b4 b3
0 0 : One-shot mode or delayed trigger mode
0,1
Refer to Table 14.1.8.2 Trigger Select Bit
Setting in Delayed Trigger Mode 1
0 : A/D conversion disabled
(2)
1 : A/D conversion started
Refer to Table 14.2 A/D Conversion
Frequency Select
Address
After reset
03D7
00
16
16
Bit name
When selecting delayed trigger mode 1
(2)
b1 b0
0 0: AN
to AN
(2 pins)
0
1
0 1: AN
to AN
(4 pins)
0
3
1 0: AN
to AN
(6 pins)
0
5
1 1: AN
to AN
(8 pins)
0
7
0 : Any mode other than repeat sweep
mode 1
0 : 8-bit mode
1 : 10-bit mode
Refer to Table 14.2 A/D Conversion
Frequency Select
Connect Bit
1 : V
connected
(3)
REF
to AN
. Use the ADGSEL1 to ADGSET0 bits in the ADCON2
0
7
connected), wait for 1 µs or more before starting A/D
REF
Address
After reset
03D4
00
16
16
Bit name
Function
1 : With sample and hold
(2)
b2 b1
0 0 : Select port P10 group (AN
0 1 : Select port P9 group (AN
1 0 : Do not set
1 1 : Do not set
Set to
"0"
Refer to Table 14.2 A/D Conversion
Frequency Select
Refer to Table 14.1.8.2 Trigger Select Bit
Setting in Delayed Trigger Mode 1
Function
RW
RW
RW
RW
RW
RW
RW
RW
RW
Function
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
)
i
)
3i
RW
RW
RW
RW
14. A/D Converter

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