HD64F2149YV datasheet(694/1075 Pages) RENESAS

694 / 1075 page

Section 20 A/D Converter

Rev. 3.00 Jan 18, 2006 page 666 of 1044

REJ09B0280-0300

Bit 7—A/D End Flag (ADF): Status flag that indicates the end of A/D conversion.

Bit 7

ADF

Description

[Clearing conditions]

(Initial value)

• When 0 is written in the ADF flag after reading ADF = 1

• When the DTC is activated by an ADI interrupt and ADDR is read

[Setting conditions]

• Single mode: When A/D conversion ends

• Scan mode: When A/D conversion ends on all specified channels

Bit 6—A/D Interrupt Enable (ADIE): Selects enabling or disabling of interrupt (ADI) requests

at the end of A/D conversion.

Bit 6

ADIE

Description

A/D conversion end interrupt (ADI) request is disabled

(Initial value)

A/D conversion end interrupt (ADI) request is enabled

Bit 5—A/D Start (ADST): Selects starting or stopping of A/D conversion. Holds a value of 1

during A/D conversion.

The ADST bit can be set to 1 by software, a timer conversion start trigger, or the A/D external

trigger input pin (

ADTRG).

Bit 5

ADST

Description

A/D conversion stopped

(Initial value)

Single mode: A/D conversion is started. Cleared to 0 automatically when conversion

on the specified channel ends

Scan mode: A/D conversion is started. Conversion continues sequentially on the

selected channels until ADST is cleared to 0 by software, a reset, or a

transition to standby mode or module stop mode

Bit 4—Scan Mode (SCAN): Selects single mode or scan mode as the A/D conversion operating

mode. See section 20.4, Operation, for single mode and scan mode operation. Only set the SCAN

bit while conversion is stopped.

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