SH7041A datasheet(605/923 Pages) RENESAS

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Section 16 Mid-Speed A/D Converter (A Mask)

16.1

Overview

The mid-speed A/D converter has 10 bit resolution, and can select from a maximum of eight

channels of analog input.

The mid-speed A/D converter is structured by two independent modules (A/D0 and A/D1)

16.1.1

Features

The mid-speed A/D converter has the following features:

• 10-bit resolution

• Eight input channels (four channels times two)

• Analog conversion voltage range setting is selectable

 Using the standard voltage pin (AVref) as an analog standard voltage (Vref), conversion of

analog input from 0V to Vref (only with SH7041A, SH7043A, and SH7045).

(Connected to AV

CC internally in the SH7040A, SH7042A, and SH7044.)

• High speed conversion

 Minimum conversion time: per channel

 Operation frequency: f≤20MHz, CKS=0, 1

6.7µs (20MHz, CKS=1)

 Operation frequency: f>20MHz, CKS=0

9.3µs (28.7MHz, CKS=0)

• Multiple conversion modes

 Single mode/scan mode

 2 channel simultaneous conversion

• Three types of conversion start

 Software, timer conversion start trigger (MTU), or ADTRG pin can be selected.

• Eight data registers

 Conversion results stored in 16-bit data registers corresponding to each channel.

• Sample and hold function

• A/D conversion end interrupt generation

 An A/D conversion end interrupt (ADI) can be generated on completion of A/D

conversion.

• Furthermore, ADI0 (A/D0 interrupt request) can activate DTC and ADI1 (A/D1 interrupt

request) can activate DMAC.

SH7041A Datasheet(PDF) 605 Page - Renesas Technology Corp