Datasheet

Section 17 A/D Converter
Rev. 2.00 Sep. 23, 2005 Page 318 of 444
REJ09B0068-0200
Module data bus
Control circuit
Internal data bus
10-bit D/A
Comparator
+
Sample-and-
hold circuit
ADI
interrupt
Bus interface
Successive approximations
register
Analog multiplexer
A
D
C
S
R
A
D
C
R
A
D
D
R
D
A
D
D
R
C
A
D
D
R
B
A
D
D
R
A
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
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
[Legend]
ADCR:
ADCSR:
ADDRA:
ADDRB:
ADDRC:
ADDRD:
ADTRG
φ/4
φ/8
AV
CC
Figure 17.1 Block Diagram of A/D Converter