Figure 22.1 Block Diagram Of A/D Converter - Renesas H8S/2158 User Manual

Section 22 A/D Converter
AVCC
AVref
10-bit D/A
AVSS
AN2
AN3
AN4
AN5
AN6
AN7
CIN0 to CIN7
ADTRG
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
Rev. 3.00 Jan 25, 2006 page 698 of 872
REJ09B0286-0300
A
D
D
R
A
+
Comparator
Sample-and-hold
circuit

Figure 22.1 Block Diagram of A/D Converter

Module data bus
A A A
A
D D D
D
D D D
C
R R R S
B C D
R
Control circuit
Internal data bus
A
D
C
R
φ/8
φ/16
ADI interrupt signal
Conversion start trigger from 8-bit timer