GMS84512 Datasheet, PDF (52/123 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTER

GMS 84512 / 84524
A/D COMP. INPUT CHANNEL SELECTION REGISTER
CIS
<00D7_H>
-
-
-
-
-
-
W
W
7
6
5
4
3
2
1
0
-
-
-
-
-
- CIS1 CIS0
Initial value when MCU Reset
[ ---- --00 ]
Analog input channel selection
00 : CIN0
01 : CIN1
10 : CIN2
11 : CIN3
CIS1
0
0
1
1
CIS0
0
1
0
1
Function Selection _{R15/ Cin1}
Channel 0 (Cin0)
R15
Channel 1 (Cin1) Cin1
Channel 2 (Cin2)
R15
Channel 3 (Cin3)
R15
Port Selection
R16/ Cin2 R17/ Cin0/ INT3 R35/ Sin/ Cin3
R16 Cin0/ INT3 R35/ Sin
R16
R17/ Cin0 R35/ Sin
Cin2
R17/ Cin0 R35/ Sin
R16
R17/ Cin0
Cin3
A/D COMPARATOR MODE REGISTER
CMR
<00D6_H>
W
R
7
6
ADEN COR
-
W
W
W
W
W
5
4
3
2
1
0
- ^{ADCM ADCM ADCM ADCM ADCM}
4
3
2
1
0
Initial value when MCU Reset
[ 00-0 0000 ]
A/D Comparision Control
0 : A/D Comparision Stop
1 ; A/D Comparision Start
A/D Comparison Result
0 : Input Voltage <Reference Voltage
1 ; Input Voltage >Reference Voltage
Reference Voltage Selection
00000 : Vdd/ 64 10000 : 33Vdd/ 64
00001 : 3Vdd/ 64 10001 : 35Vdd/ 64
00010 : 5Vdd/ 64 10010 : 37Vdd/ 64
|
|
01111 : 31Vdd/ 64 11111 : 63Vdd/ 64
l The Calculation of Reference Voltage
Reference Voltage ( Vref ) = { 2 X ( Value of ADCM) + 1 } X Vdd / 64
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