M16C30_02 Datasheet, PDF (132/178 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

A-D Converter
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
fAD
VREF
AVSS
VCUT=0
VCUT=1
CKS0=1
1/2
1/2
CKS0=0
Resistor ladder
CKS1=1
CKS1=0
φAD
A-D conversion rate
selection
Successive conversion register
A-D control register 1 (address 03D716)
A-D control register 0 (address 03D616)
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)
Vref
Decoder
VIN ^Comparator
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Data bus high-order
Data bus low-order
CH2,CH1,CH0=000
CH2,CH1,CH0=001
CH2,CH1,CH0=010
CH2,CH1,CH0=011
CH2,CH1,CH0=100
CH2,CH1,CH0=101
CH2,CH1,CH0=110
CH2,CH1,CH0=111
ANEX0
ANEX1
OPA0=1
OPA1=1
Figure 1.17.1. Block diagram of A-D converter
OPA1,OPA0=0,0
OPA1,OPA0=1,1
OPA1,OPA0=0,1
OPA1, OPA0
0 0 : Normal operation
0 1 : ANEX0
1 0 : ANEX1
1 1 : External op-amp mode
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