p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 478

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 17 A/D Converter
A block diagram of the A/D converter is shown in figure 17.1.
Rev. 1.00 Sep. 21, 2006 Page 440 of 658
REJ09B0310-0100
AVCC
AVSS
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
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
10-bit D/A
Sample-and-hold
circuit
Figure 17.1 Block Diagram of A/D Converter
Comparator
+
A
D
D
R
A
Module data bus
A
D
D
R
B
A
D
D
R
C
Control circuit
A
D
D
R
D
A
D
C
S
R
A
D
C
R
Conversion start trigger from 8-bit timer
Internal data bus
φ/16
ADI interrupt signal
φ/8