Section 16 A/D Converter; Overview; Features - Renesas H8S Series Hardware Manual

16-bit single-chip microcomputer

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The H8S/2357 Group incorporates a successive approximation type 10-bit A/D converter that allows up to eight analog

input channels to be selected.

A/D converter features are listed below

• 10-bit resolution

• Eight input channels

• Settable analog conversion voltage range

 Conversion of analog voltages with the reference voltage pin (V

• High-speed conversion

 Minimum conversion time: 6.7 µs per channel (at 20 MHz operation)

• Choice of single mode or scan mode

 Single mode: Single-channel A/D conversion

 Scan mode:

Continuous A/D conversion on 1 to 4 channels

• Four data registers

 Conversion results are held in a 16-bit data register for each channel

• Sample and hold function

• Three kinds of conversion start

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

• A/D conversion end interrupt generation

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

• Module stop mode can be set

 As the initial setting, A/D converter operation is halted. Register access is enabled by exiting module stop mode.

Section 16 A/D Converter

) as the analog reference voltage

Rev.6.00 Oct.28.2004 page 539 of 1016

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