Datasheet

Section 22 A/D Converter

Rev. 2.00 Sep. 28, 2009 Page 746 of 994

REJ09B0452-0200

Ye s

ADCR.TRGS1 = 0

ADCR.TRGS0 = 0

(to invalidate the

external trigger)*

ADCSR.ADST = 0

Change the scan mode

change the extaernal

trigger setting*

Note * Overwrite the TRGS1 and TRGS0 bits

settings at the same time (in a byte unit).

Extaernal trigger

shut off?

Figure 22.8 Procedure for Changing Modes when Starting of the A/D Converter by an

External Trigger has been Selected