98
µ
PD17062
10.5.2 A/D Converter Data Register
Fig. 10-5 shows the functions of the A/D converter data register.
The A/D converter data register sets the A/D converter comparison voltage.
Because the A/D converter is a 4-bit converter, the four low-order bits of the A/D converter data register
are valid.
Fig. 10-5 A/D Converter Data Register Functions
DBF3
0CH
DBF2
0DH
DBF1
0EH
DBF0
0FH
b
15
b
14
b
13
b
12
b
11
b
10
b
9
b
8
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
0
ADCR 02H
A/D converter comparison voltage V
REF
setting
0000
1
x
15
8
V
REF
= 0 V
Fixed at 0
V
REF
=V
DD
(V)
x - 0.5
15 ×
A/D converter
Symbol
Peripheral
address
Peripheral hardware
Name
Peripheral register
Name Data buffer
Symbol
Address
Bit
Data Don't care Don't care Transfer data
GET
PUT
A/D converter
data register Valid data