Datasheet

Table Of Contents
Section 16 A/D Converter
Page 602 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
Module data bus
Bus interface
Multiplexer
Control circuit
Internal data bus
10 bit D/A
+
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
AN14
AN15
Legend:
ADCR: A/D control register
ADCSR: A/D control/status register
ADDRA: A/D data register A
ADDRB: A/D data register B
ADDRC: A/D data register C
ADDRD: A/D data register D
ADTRG
Time conversion start trigger
from TPU or 8 bit timer
Off during A/D conversion standby
On during A/D conversion
Vref
AVCC
ADI interrupt signal
Successive approximation register
Sample and
hold circuit
Comparator
φ/2
φ/4
φ/8
φ/16
AVSS
Figure 16.1 Block Diagram of A/D Converter