HD64F2168 Datasheet, PDF (636/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

18.1.1 Block Diagram
A block diagram of the A/D converter is shown in figure 18.1.
Module data bus
Internal data bus
AVCC
AVref
AVSS
10-bit D/A
A AAA
D DDD
D DDD
R RRR
A B CD
AA
DD
CC
SR
R
AN0
+
AN1
AN2
AN3
Comparator
AN4
AN5
Sample-and-hold
AN6
circuit
AN7
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
φ/8
Control circuit
φ/16
ADI interrupt signal
Conversion start trigger from 8-bit timer
Figure 18.1 Block Diagram of A/D Converter
Rev. 3.00, 03/04, page 596 of 830