Datasheet

Section 19 A/D Converter
Rev. 1.50 Sep. 18, 2007 Page 444 of 584
REJ09B0240-0150
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
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
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
AN12
AN13
AN14
AN15
Figure 19.1 Block Diagram of A/D Converter