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Rev.1.02 Jul 01, 2005 page 178 of 314
REJ09B0126-0102
M16C/6N Group (M16C/6NL, M16C/6NN) 15. A/D Converter
Under development
This document is under development and its contents are subject to change.
Figure 15.1 A/D Converter Block Diagram
ANEX0
ANEX1
OPA0=1
OPA1=1
ADGSEL1 to ADGSEL0=00b
OPA1 to OPA0=11b
=000b
=001b
=010b
=011b
=100b
=101b
=110b
=111b
VREF
VIN
CH2 to CH0
PM00
PM01
Decoder
for channel
selection
Data bus low-order
VCUT
1
0
Data bus high-order
OPA1=1
Port P10 group
Port P0 group
ADGSEL1 to ADGSEL0=00b
OPA1 to OPA0=00b
OPA1 to OPA0
=01b
CKS0
0
1
0
1
0
1
1/3
CKS2
1/21/2
φAD
A/D conversion rate selection
Resistor ladder
Successive conversion register
Comparator
Decoder
for A/D register
Port P2 group
TRG
0
1
A/D trigger
Software trigger
=000b
=001b
=010b
=011b
=100b
=101b
=110b
=111b
=000b
=001b
=010b
=011b
=100b
=101b
=110b
=111b
CH2 to CH0
CH2 to CH0
AD0 register
AD1 register
AD2 register
AD3 register
AD4 register
AD5 register
AD6 register
AD7 register
ADCON0 register
ADCON1 register
ADCON2 register
VREF
AVSS
fAD
ADTRG
PM01 to PM00=00b
ADGSEL1 to ADGSEL0=10b
OPA1 to OPA0=00b
PM01 to PM00=00b
ADGSEL1 to ADGSEL0=10b
OPA1 to OPA0=00b
AN0_0
AN0_1
AN0_2
AN0_3
AN0_4
AN0_5
AN0_6
AN0_7
AN2_0
AN2_1
AN2_2
AN2_3
AN2_4
AN2_5
AN2_6
AN2_7
AN0
AN0
AN0
AN0
AN0
AN0
AN0
AN0
PM01 to PM00=00b
ADGSEL1 to ADGSEL0=10b
OPA1 to OPA0=11b
PM01 to PM00=00b
ADGSEL1 to ADGSEL0=11b
OPA1 to OPA0=11b
CKS1