M16C62N Datasheet, PDF (129/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

A-D Converter
Mitsubishi microcomputers
M16C / 62N Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
fAD
VREF
AVSS
VCUT = 0
VCUT = 1
1/2
1/2
Resistor ladder
A-D conversion rate selection
CKS0 = 1
CKS0 = 0
CKS1 = 1
CKS1 = 0
φAD
Successive conversion register
A-D control register 1
(address 03D716)
Addresses
(03C116, 03C016)
(03C316, 03C216)
(03C516, 03C416)
(03C716, 03C616)
(03C916, 03C816)
(03CB16, 03CA16)
(03CD16, 03CC16)
(03CF16, 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)
A-D control register 0
(address 03D616)
Decoder
for A-D register
PM00
PM01
Port P0 group
P00/AN00
P01/AN01
P02/AN02
P03/AN03
P04/AN04
P05/AN05
P06/AN06
P07/AN07
Data bus high-order
Data bus low-order
A-D control register 2
(address 03D416)
PM01,PM00,CH2,CH1,CH0
= 00000
= 00001
= 00010
= 00011
= 00100
= 00101
= 00110
= 00111
Port P10 group
P100/AN0
P101/AN1
P102/AN2
P103/AN3
P104/AN4
P105/AN5
P106/AN6
P107/AN7
CH2,CH1,CH0
= 000
= 001
= 010
= 011
= 100
= 101
= 110
= 111
Decoder
for channel selection
Vref
Comparator
VIN
ADGSEL1,ADGSEL0 = 00
OPA1,OPA0 = 00
PM01,PM00 = 00
ADGSEL1,ADGSEL0 = 10
OPA1,OPA0 = 00
ANEX0
ANEX1
OPA0 = 1
OPA1 = 1
ADGSEL1,ADGSEL0 = 00
OPA1,OPA0 = 11
PM01,PM00 = 00
ADGSEL1,ADGSEL0 = 10
OPA1,OPA0 = 11
OPA1,OPA0
= 01
OPA1 = 1
Figure 1.15.1. Block diagram of A-D converter
128