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Renesas M16C/29 Series - Page 249

Renesas M16C/29 Series
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15. A/D Converter
puorG92/C61M
page 223
854fo7002,03.raM21.1.veR
2110-1010B90JER
Figure 15.1 A/D Converter Block Diagram
=000
2
=001
2
=010
2
=011
2
=100
2
=101
2
=110
2
=111
2
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN00
AN01
AN02
AN03
AN04
AN05
AN06
AN07
Vref
V
IN
CH2 to CH0
Decoder
for channel
selection
A/D register 0(16)
Data bus low-order
VREF
AVSS
VCUT=0
VCUT=1
Data bus high-order
Port P10 group
ADGSEL1 to ADGSEL0=10
2
ADGSEL1 to ADGSEL0=00
2
ADGSEL1 to ADGSEL0=11
2
fAD
CKS0=1
CKS0=0
CKS1=1
CKS1=0
1/3
CKS2=0
CKS2=1
1/21/2
ø
AD
A/D conversion rate
selection
(03C1
16
to 03C0
16
)
(03C3
16
to 03C2
16
)
(03C5
16
to 03C4
16
)
(03C7
16
to 03C6
16
)
(03C9
16
to 03C8
16
)
(03CB
16
to 03CA
16
)
(03CD
16
to 03CC
16
)
(03CF
16
to 03CE
16
)
Resistor ladder
Successive conversion register
ADCON0 register
(address 03D6
16
)
ADCON1 register
(address 03D7
16
)
Comparator 0
Addresses
Decoder
for A/D register
A/D register 1(16)
A/D register 2(16)
A/D register 3(16)
A/D register 4(16)
A/D register 5(16)
A/D register 6(16)
A/D register 7(16)
ADCON2 register
(address 03D4
16
)
Port P0 group
=000
2
=001
2
=010
2
=011
2
=100
2
=101
2
=110
2
=111
2
CH2 to CH0
SSE = 1
CH2 to CH0=001
2
Comparator 1
ADGSEL1 to ADGSEL0=00
2
ADGSEL1 to ADGSEL0=10
2
ADGSEL1 to ADGSEL0=11
2
VIN1
Port P1/Port P9
group
AN20
AN21
AN22
AN23
AN24
AN25
AN26
AN27
=000
2
=001
2
=010
2
=011
2
=100
2
=101
2
=110
2
=111
2
CH2 to CH0
(Note)
Note: AN
04
to AN
07
, AN
20
to AN
23
, and AN
25
to AN
27
, is available for only 80-pin package.
(Note)
Port P9 group
AN30
AN31
AN32
=000
2
=001
2
=010
2
CH2 to CH0
ADGSEL1 to ADGSEL0=01
2
ADGSEL1 to ADGSEL0=01
2

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