M16C6K9_15 Datasheet, PDF (146/294 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6K9 Group
Comparator
Table.JC-1 Correspondence of internal analog voltage and contents of bits 0 to 3 of the comparator
control register.
Comparator Control Register
Contents of bit 0 to 3
0000
LSB
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Internal Analog Voltage
1 / 32•Vcc
1 / 16•Vcc + 1 / 32•Vcc
2 / 16•Vcc + 1 / 32•Vcc
3 / 16•Vcc + 1 / 32•Vcc
4 / 16•Vcc + 1 / 32•Vcc
5 / 16•Vcc + 1 / 32•Vcc
6 / 16•Vcc + 1 / 32•Vcc
7 / 16•Vcc + 1 / 32•Vcc
8 / 16•Vcc + 1 / 32•Vcc
9 / 16•Vcc + 1 / 32•Vcc
10 / 16•Vcc + 1 / 32•Vcc
11 / 16•Vcc + 1 / 32•Vcc
12 / 16•Vcc + 1 / 32•Vcc
13 / 16•Vcc + 1 / 32•Vcc
14 / 16•Vcc + 1 / 32•Vcc
15 / 16•Vcc + 1 / 32•Vcc
Comparator Control register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
CMPCON
Address
03DE16
Bit Symbol
CREFS
Bit name
Internal analog voltage
setting bits
Reserved bit
Can't be written. "0" will be read out.
When Reset
0016
Function
n/16•VCC+1/32•VCC
n=setting vaule
Fig.JC-2 Comparator control register
RW
Rev.1.00 Jun 06, 2003 page 144 of 290