HD6432351 datasheet(681/1025 Pages) RENESAS

681 / 1025 page

Section 15 A/D Converter

Rev. 3.00 Sep 15, 2006 page 647 of 988

REJ09B0330-0300

Bit 5—A/D Start (ADST): Selects starting or stopping on 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 15.4, Operation, for single mode and scan mode operation. Only set the SCAN

bit while conversion is stopped (ADST = 0).

Bit 4

SCAN

Description

Single mode

(Initial value)

Scan mode

Bit 3—Clock Select (CKS): Sets the A/D conversion time. Only change the conversion time

while conversion is stopped (ADST = 0).

Bit 3

CKS

Description

Conversion time = 266 states (max.)

(Initial value)

Conversion time = 134 states (max.)

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