Renesas M16C/26A Series Hardware Manual page 200

M 1 6 C 2 / 6 A G o r u p ( M 1 6
f
AD
V
REF
VCUT=0
AV
SS
VCUT=1
Successive conversion register
Addresses
(03C1 to 03C0
16
(03C3 to 03C2
16
(03C5 to 03C4
16
(03C7 to 03C6
16
(03C9 to 03C8
16
(03CB to 03CA
16
(03CD to 03CC
16
(03CF to 03CE
16
Port P9 group
AN
30
AN
31
(1)
AN
32
Port P9 group
AN
(1)
24
NOTE:
1. AN and AN are available for only 48-pin package.
32 24
Figure 14.1 A/D Converter Block Diagram
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
A/D conversion rate
selection
CKS2=0
1/2
1/3
CKS2=1
Resistor ladder
) A/D register 0(16)
16
) A/D register 1(16)
16
A/D register 2(16)
)
16
) A/D register 3(16)
16
) A/D register 4(16)
16
A/D register 5(16)
)
16
A/D register 6(16)
)
16
) A/D register 7(16)
16
Data bus high-order
Data bus low-order
Port P10 group
AN
0
AN
1
AN
2
AN
3
AN
4
AN
5
AN
6
CH2 to CH0
AN
7
=000
2
=001
2
=010
2
CH2 to CH0
=100
2
page 181
f o 3 2 9
C 2 / 6 ) T
CKS0=1
1/2
CKS0=0
ADCON1 register
(address 03D7 )
16
ADCON0 register
(address 03D6 )
16
Decoder
for A/D register
ADCON2 register
(address 03D4 )
16
for channel
selection
CH2 to CH0
=000
2
ADGSEL1 to ADGSEL0=00
=001
2
=010
2
=011
2
=100
2
=101
2
=110
2
ADGSEL1 to ADGSEL0=01
=111
2
ADGSEL1 to ADGSEL0=11
ADGSEL1 to ADGSEL0=00
ADGSEL1 to ADGSEL0=01
CKS1=1
ø
AD
CKS1=0
V
ref
Comparator 0
Decoder
V
IN
2
2
2
2
2
V
IN1
Comparator 1
14. A/D Converter
SSE = 1
CH2 to CH0=001
2