H8SLASH3021 datasheet(443/712 Pages) RENESAS

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13. A/D Converter

Rev.2.00 Mar. 22, 2007 Page 419 of 684

REJ09B0352-0200

Section 13 A/D Converter

13.1

Overview

The H8/3022 Group 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 17.6, Module Standby Function.

13.1.1

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 AV

CC pin.

• High-speed conversion

Conversion time: minimum 7.4 µs per channel (with 18 MHz system clock)

• Two conversion modes

Single mode: A/D conversion of one channel

Scan mode: continuous 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

• A/D conversion can be externally triggered

• A/D interrupt requested at end of conversion

At the end of A/D conversion, an A/D end interrupt (ADI) can be requested.

H8/3021 Datasheet(PDF) 443 Page - Renesas Technology Corp