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A-D Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Fig. 6.7.22 A-D control register 1
A-D Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
Fig. 6.7.23 A-D control register 2
A-D control register 1 (AD1) [Address 00EE
B
Name
0
Analog input pin selection
to
bits
2
(ADM0, ADM1, ADM2)
Nothing is assigned. This bit is a write disable bit.
3
When this bit is read out, the value is "0."
Storage bit of comparison
4
result (ADM4)
5
Nothing is assigned. These bits are write disable bits.
to
When these bits are read out, the values are "0."
7
A-D control register 2(AD2) [Address 00EF
B
Name
0
D-A converter set bits
to
(ADC0, ADC1, ADC2,
ADC3, ADC4, ADC5)
5
Nothing is assigned. These bits are write disable bits.
6, 7
When these bits are reed out, the values are " 0."
7220 Group User's Manual
]
16
Functions
b2 b1 b0
0
0
0 : A- D1
0
0
1 : A-D2
0
1
0 : A-D3
0
1
1 : A-D4
1
0
0 : A-D5
1
0
1 : A-D6
1
1
0 :
Do not set.
1
1
1 :
0: Input voltage < reference voltage
1: Input voltage > reference voltage
]
16
Functions
b5
b4
b3
b2
b1
b0
0
0
0
0
0
0
: 1/128Vcc
0
0
0
0
0
1
: 3/128Vcc
0
0
0
0
1
0
: 5/128Vcc
1
1
1
1
0
1
: 123/128Vcc
1
1
1
1
1
0
: 125/128Vcc
1
1
1
1
1
1
: 127/128Vcc
APPENDIX
6.7 Control registers
After reset R W
0
R W
0
R —
R W
Indeterminate
0
R —
Address 00EE
After reset
R W
0
R W
0
R —
Address 00EF
16
16
6-45
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