HD6413008VF25 Datasheet, PDF (457/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 14 A/D Converter
14. A/D Converter
14.1 Overview
The H8/3008 includes a 10-bit successive-approximations A/D converter with a selection of up to
eight analog input channels.
When the A/D converter is not used, it can be halted independently to conserve power. For details
see section 18.6, Module Standby Function.
The H8/3008 supports 70/134-state conversion as a high-speed conversion mode. Note that it
differs in this respect from the H8/3048 Group, which supports 134/266-state conversion.
14.1.1 Features
A/D converter features are listed below.
• 10-bit resolution
• Eight input channels
• Selectable analog conversion voltage range
The analog voltage conversion range can be programmed by input of an analog reference
voltage at the V_REF pin.
• High-speed conversion
Conversion time: minimum 5.36 μs per channel
• Two conversion modes
Single mode: A/D conversion of one channel
Scan mode: continuous A/D conversion on one to four channels
• Four 16-bit data registers
A/D conversion results are transferred for storage into data registers corresponding to the
channels.
• Sample-and-hold function
• Three conversion start sources
The A/D converter can be activated by software, an external trigger, or an 8-bit timer compare
match.
• A/D interrupt requested at end of conversion
At the end of A/D conversion, an A/D end interrupt (ADI) can be requested.
Rev.4.00 Aug. 20, 2007 Page 411 of 638
REJ09B0395-0400