SH7052 datasheet(585/919 Pages) RENESAS

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Section 16 A/D Converter

16.1

Overview

The SH7052F/SH7053F/SH7054F includes a 10-bit successive-approximation A/D converter,

with software selection of up to 32 analog input channels.

The A/D converter is composed of two independent modules, A/D0 and A/D1. A/D0 comprises

three groups and A/D1 comprises one group.

Module

Analog Groups

Channels

A/D0

Analog group 0

AN0 to AN3

Analog group 1

AN4 to AN7

Analog group 2

AN8 to AN11

A/D1

Analog group 3

AN12 to AN15

16.1.1

Features

The features of the A/D converter are summarized below.

• 10-bit resolution

16 input channels (A/D0: 12 channels, A/D1: 4 channels)

• High-speed conversion

Conversion time: minimum 13.4 µs per channel (when

φ = 40 MHz)

• Two conversion modes

 Single mode: A/D conversion on one channel

 Scan mode: cotinuous scan mode, single-cycle scan mode (AN0 to AN3, AN4 to AN7,

AN8 to AN11, AN12 to AN15)

Continuous conversion on 1 to 12 channels (A/D0)

Continuous conversion on 1 to 4 channels (A/D1)

• Sixteen 10-bit A/D data registers

A/D conversion results are transferred for storage into data registers corresponding to the

channels.

• Two sample-and-hold circuits

A sample-and-hold circuit is built into each A/D converter module (A/D0 and A/D1),

simplifying the configuration of external analog input circuitry.

• A/D conversion interrupts and DMA function supported

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