H8S-2639 Datasheet, PDF (732/1547 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Section 17 A/D Converter
17.1.2 Block Diagram
Figure 17-1 shows a block diagram of the A/D converter.
Module data bus
AVCC
Vref
AVSS
10-bit D/A
Internal data bus
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
+
φ/2
−
φ/4
Comparator
Control circuit
φ/8
Sample-and-
hold circuit
φ/16
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
ADI
interrupt
Conversion start
trigger from TPU
Figure 17-1 Block Diagram of A/D Converter
Rev. 6.00 Feb 22, 2005 page 672 of 1484
REJ09B0103-0600