SH7014 datasheet(415/754 Pages) RENESAS

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13. High Speed A/D Converter

⎯ SH7014 ⎯

Rev.5.00 Sep. 27, 2007 Page 381 of 716

REJ09B0398-0500

Figure 13.5 shows an example of operation in the group-single mode when AN0 to AN2 are

selected.

ADDRB

ADDRA

Channel 3

Channel 2

Channel 1

Channel 0

ADST

ADF

ADDRC

ADDRD

Sampling

A/D

conversion

A/D

conversion

A/D

conversion

Conversion standby

Conversion

standby

Conversion

standby

Conversion

standby

Automatic clear

Set to 1 by software

Conversion result 1

Conversion result 2

Conversion result 3

Figure 13.5 High Speed A/D Converter Operation Example (Group-Single Mode)

13.4.4

Group-Scan Mode

Choose group-scan mode when doing repeated A/D conversions for multiple channels. This is

useful when doing continuous monitoring of the analog inputs of multiple channels.

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 channels is repeated during that interval.

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