R8C/18 Group, R8C/19 Group
16. Comparator
Rev.1.30
Apr 14, 2006
Page 166 of 233
REJ09B0222-0130
Figure 16.3
Registers ADCON2 and AD
A/D Control Register 2
(1)
Symbol
Address
After Reset
ADCON2
00D4h
00h
Bit Symbol
Bit Name
Function
RW
NOTE:
1.
CMPSEL
Comparator function select bit
0 : Not used
1 : Used
RW
b0
0
0
0
b3 b2 b1
Reserved bits
Set to 0.
b7 b6 b5 b4
Set to 0.
RW
If the ADCON2 register is rew ritten during comparator conversion, the conversion result is undefined.
—
(b0)
Reserved bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
—
(b7-b4)
—
—
(b3-b2)
RW
A/D Register
Symbol
Address
After Reset
AD
00C0h
Undefined
RW
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Comparator conversion result
Function
RO
—
b0
b3 b2 b1
b7 b6 b5 b4
