HD6432345 Datasheet, PDF(516/907 Page) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

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HD6432345 Datasheet, PDF (516/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

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Section 14 A/D Converter

14.1 Overview

The H8S/2345 Series incorporates a successive approximation type 10-bit A/D converter that

allows up to eight analog input channels to be selected.

14.1.1 Features

A/D converter features are listed below

â¢ 10-bit resolution

â¢ Eight input channels

â¢ Settable analog conversion voltage range

ï£§ Conversion of analog voltages with the reference voltage pin (Vref) as the analog reference

voltage

â¢ High-speed conversion

ï£§ Minimum conversion time: 6.7 Âµs per channel (at 20 MHz operation)

â¢ Choice of single mode or scan mode

ï£§ Single mode: Single-channel A/D conversion

ï£§ Scan mode: Continuous A/D conversion on 1 to 4 channels

â¢ Four data registers

ï£§ Conversion results are held in a 16-bit data register for each channel

â¢ Sample and hold function

â¢ Three kinds of conversion start

ï£§ Choice of software or timer conversion start trigger (TPU or 8-bit timer), or ADTRG pin

â¢ A/D conversion end interrupt generation

ï£§ A/D conversion end interrupt (ADI) request can be generated at the end of A/D conversion

â¢ Module stop mode can be set

ï£§ As the initial setting, A/D converter operation is halted. Register access is enabled by

exiting module stop mode.

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