NEC V850E/RS1 User Manual page 396

(5) Interrupt request flag (ADIF)
The interrupt request flag (ADIF) is not cleared even if the contents of the ADSCM0L register are
changed. If the analog input pin is changed during A/D conversion, therefore, the result of
converting the previously selected analog input signal may be stored and the conversion end
interrupt request flag may be set immediately before the ADSCM0L register is rewritten. If the
ADIF flag is read immediately after the ADSCM0L register is rewritten, the ADIF flag may be set
even though the A/D conversion of the newly selected analog input pin has not been completed.
When A/D conversion is stopped, clear the ADIF flag before resuming conversion.
A/D conversion
ADA0CRn
Remark:
396
Downloaded from Elcodis.com electronic components distributor
Figure 11-17: Generation Timing of A/D Conversion End Interrupt Request
ADA0S rewriting
(ANIn conversion start)
ANIn
INTAD
n = 0 to 15
m = 0 to 15
User's Manual U16702EE3V2UD00
Chapter 11 A/D Converter
ADA0S rewriting
(ANIm conversion start) ADIF is set, but ANIm
ANIn ANIm
ANIn
ANIn
conversion does not end
ANIm
ANIm ANIm