SH7041A datasheet(587/923 Pages) RENESAS

Part #	SH7041A

Description	Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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ADDRB

ADDRA

Channel 3

Channel 2

Channel 1

Channel 0

ADST

ADF

ADDRC

ADDRD

Automatic clear

Sampling 1

Conversion

standby

Conversion

standby

Conversion standby

A/D

conversion 1

Conversion result 1

Set to 1 by software

Figure 15.4 A/D Converter Operation Example (Select-Single Mode)

15.4.2

Select-Scan Mode

Choose select-scan mode when doing repeated A/D conversions for one channel. This is useful

when doing continuous monitoring of the analog input of one channel.

When the ADST bit is set to 1, A/D conversion is started according to the designated conversion

start conditions. The ADST bit is held to 1 until 0 cleared by software. A/D conversion for the

selected input channel is repeated during that interval.

The ADF flag is set to 1 at the end of the first conversion. At this point, if the ADIE bit is set, an

ADI interrupt request is issued, and the A/D converter is halted. With the A/D converter in stop

mode due to an ADI interrupt request, conversion is restarted when the ADF flag is cleared to 0.

The ADF flag is cleared by reading the ADCSR then writing a 0.

Figure 15.5 shows an example of operation in the select-scan mode when AN1 is selected.

SH7041A Datasheet(PDF) 587 Page - Renesas Technology Corp