Section 12 A/D Converter
12.1.2
Block Diagram
Figure 12.1 shows a block diagram of the A/D converter.
ADTRG
AN
0
AN
1
AN
2
AN
3
AN
4
AN
5
AN
6
AN
7
AV
CC
AV
SS
[Legend]
AMR:
A/D mode register
ADSR:
A/D start register
ADRR:
A/D result register
IRRAD:
A/D conversion end interrupt request flag
Rev. 7.00 Mar 10, 2005 page 400 of 652
REJ09B0042-0700
Multiplexer
+
Com-
parator
−
Reference
voltage
Figure 12.1 Block Diagram of the A/D Converter
AMR
ADSR
AV
CC
Control logic
AV
SS
ADRRH
ADRRL
IRRAD