M16C28 Datasheet, PDF (238/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
15. A/D Converter
A/D conversion rate
selection
CKS2=0
CKS1=1
CKS0=1
øAD
1/2
1/2
CKS1=0
fAD
1/3
CKS0=0
CKS2=1
VREF
AVSS
VCUT=0
VCUT=1
Resistor ladder
Successive conversion register _{ADCON1 register}
(address 03D716)
Addresses
(03C116 to 03C016)
(03C316 to 03C216)
(03C516 to 03C416)
(03C716 to 03C616)
(03C916 to 03C816)
(03CB16 to 03CA16)
(03CD16 to 03CC16)
(03CF16 to 03CE16)
A/D register 0(16)
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)
Data bus high-order
Data bus low-order
ADCON0 register
(address 03D616)
Decoder
for A/D register
ADCON2 register
(address 03D416)
Decoder
for channel
selection
Vref
Comparator 0
VIN
Port P0 group
AN00
AN01
AN02
AN03
AN04
AN05
AN06
AN07
Port P1/Port P9
group (1)
AN20
AN21
AN22
AN23
AN24
AN25
AN26
AN27
CH2 to CH0
=0002
=0012
=0102
=0112
=1002
=1012
=1102
=1112
CH2 to CH0
=0002
=0012
=0102
=0112
=1002
=1012
=1102
=1112
Port P10 group
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
CH2 to CH0
=0002
=0012
=0102
=0112
=1002
=1012
=1102
=1112
ADGSEL1 to ADGSEL0=002
ADGSEL1 to ADGSEL0=102
ADGSEL1 to ADGSEL0=112
SSE = 1
CH2 to CH0=0012
ADGSEL1 to ADGSEL0=002
ADGSEL1 to ADGSEL0=102
ADGSEL1 to ADGSEL0=112
VIN1
Comparator 1
NOTES:
1. Port P1/Port P9 group is available for only 80-pin/85-pin packages.
Figure 15.1 A/D Converter Block Diagram
Rev. 2.00 Jan. 31, 2007 ^{page 218} of 385
REJ09B0047-0200