RX610 Group
23. A/D Converter
R01UH0032EJ0120 Rev.1.20
Page 779 of 1006
Feb 20, 2013
AD3.ADSSTR: A/D sampling state register
Synchronous
circuit
Module data bus
Control circuit
Internal data bus
Comparator
+
AD3.ADDRA
AD3.ADDRB
AD3.ADDRC
AD3.ADDRD
AD3.ADCSR
AD3.ADCR
AN12
AN13
AN14
AN15
[Legend]
Bus interface
Successive
approximation
register
10-bit
D/A
AVCC
Multiplexer
Sample-and-
hold circuit
Compare-match A signal from TMR2
ADI3 interrupt signal
AD3.ADDRD: A/D data register D
VREFH
VREFL
ADTRG2#
AD3.ADDRA:
A/D data register A
AD3.ADDRB:
A/D data register B
AD3.ADDRC: A/D data register C
AD3.ADDPR
AD3.ADSSTR
Compare-match/input-capture A signals
from TPU0 to TPU5, TPU6 to TPU11
Compare-match/input-capture D
signal from TPU0
AD3.ADCSR:
A/D control/status register
AD3.ADCR:
A/D control register
AD3.ADDPR:
ADDRy format select
ADCLK
ADTRG3#
Clock
selection
PCLK
PCLK/2
PCLK/4
Internal clock
PCLK/8
Figure 23.4 Block Diagram of A/D Converter Unit 3 (AD3)