Trigger Mode - NEC V850ES/F 3-L Series User Manual

32-bit single-chip microcontroller

Table of Contents

A/D Converter (ADC)

A/D converter

19.4.2 Trigger mode

Sampling time

A/D Converter basic operation

The timing of starting the conversion operation is specified by setting a trigger

mode. The trigger mode includes a software trigger mode and hardware trigger

modes. The hardware trigger modes include timer trigger modes 0 and 1, and

external trigger mode. The ADAnTMD bit of the ADAnM0 register is used to set

the trigger mode. In timer trigger mode set ADAnM2.ADAnTMD[1:0] = 01.

Software trigger mode

When the ADAnCE bit of the ADAnM0 register is set to 1, the signal of the

analog input pin ANInmm specified by the ADAnS register is converted. When

conversion is complete, the result is stored in the ADAnCRm register. At the

same time, the A/D conversion end interrupt request signal (INTAD) is

If the operation mode specified by the ADAnMD1 and ADAnMD0 bits of the

ADAnM0 register is the continuous select/scan mode, the next conversion is

started, unless the ADAnCE bit is cleared to 0 after completion of the first

When conversion is started, the ADAnEF bit is set to 1 (indicating that

conversion is in progress).

If the ADAnM0, ADAnM2, ADAnS, ADAnPFM, or ADAnPFT register is written

during conversion, the conversion is aborted and started again from the

User's Manual U18743EE1V2UM00

Conversion time

A/D conversion