RX610 Group
23. A/D Converter
R01UH0032EJ0120 Rev.1.20
Page 777 of 1006
Feb 20, 2013
AD1.ADSSTR: A/D sampling state register
Synchronous
circuit
Module data bus
Control circuit
Internal data bus
Comparator
+
AD1.ADDRA
AD1.ADDRB
AD1.ADDRC
AD1.ADDRD
AD1.ADCSR
AD1.ADCR
AN4
AN5
AN6
AN7
[Legend]
Successive
approximation
register
10-bit
D/A
AVCC
Multiplexer
Sample-and-
hold circuit
ADI1 interrupt signal
AD1.ADDRD: A/D data register D
VREFH
VREFL
ADTRG0#
AD1.ADDRA:
A/D data register A
AD1.ADDRB:
A/D data register B
AD1.ADDRC: A/D data register C
AD1.ADDPR
AD1.ADSSTR
AD1.ADCSR:
A/D control/status register
AD1.ADCR:
A/D control register
AD1.ADDPR:
ADDRy format select
ADCLK
ADTRG1#
Clock
selection
PCLK
PCLK/2
PCLK/4
Internal clock
PCLK/8
Bus interface
Compare-match A signal from TMR0
Compare-match/input-capture A signals
from TPU0 to TPU5, TPU6 to TPU11
Compare-match/input-capture B
signal from TPU0
Figure 23.2 Block Diagram of A/D Converter Unit 1 (AD1)