Section 18 A/D Converter
Module data bus
Internal data bus
AVCC
A
D
D
R
A
A
D
D
R
B
A
D
D
R
C
A
D
D
R
D
A
D
C
S
R
A
D
C
R
10-bit D/A
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
+
Control circuit
Comparator
Sample-and-
hold circuit
ADI
interrupt
ADTRG
[Legend]
ADCR:
A/D control register
A/D control/status register
A/D data register A
A/D data register B
A/D data register C
A/D data register D
ADCSR:
ADDRA:
ADDRB:
ADDRC:
ADDRD:
Figure 18.1 Block Diagram of A/D Converter
Rev. 3.00 Sep. 10, 2007 Page 368 of 528
REJ09B0216-0300