HD64F38602R Datasheet, PDF (381/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 17 A/D Converter
Section 17 A/D Converter
This LSI includes a successive approximation type 10-bit A/D converter that allows up to six
analog input channels to be selected. The block diagram of the A/D converter is shown in figure
17.1.
17.1 Features
• 10-bit resolution
• Six input channels
• High-speed conversion: 12.4 µs per channel (at 10-MHz operation)
• Sample and hold function
• Conversion start method
A/D conversion can be started by software and external trigger.
• Interrupt source
An A/D conversion end interrupt request can be generated.
• Use of module standby mode enables this module to be placed in standby mode independently
when not used. (The A/D converter is halted as the initial value. For details, refer to section
5.4, Module Standby Function.)
ADTRG
AMR
AN0
AN1
AN2
AN3
AN4
AN5
AVCC
VSS
Multiplexer
Reference
voltage
ADSR
AVcc
+ ^Comparator
-
Vss
Control logic
ADRR
[Legend]
AMR: A/D mode register
ADSR: A/D start register
ADRR: A/D result register
IRRAD: A/D conversion end interrupt request flag
Figure 17.1 Block Diagram of A/D Converter
IRRAD
ADCMS3AA_000020020900
Rev. 3.00 May 15, 2007 Page 349 of 516
REJ09B0152-0300