upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 396

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

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Remark:
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A/D conversion
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.
ADA0CRn
INTAD
Figure 11-17: Generation Timing of A/D Conversion End Interrupt Request
(ANIn conversion start)
n = 0 to 15
m = 0 to 15
ADA0S rewriting
ANIn
User’s Manual U16702EE3V2UD00
Chapter 11 A/D Converter
ANIn
ANIn
(ANIm conversion start) ADIF is set, but ANIm
ADA0S rewriting
ANIn
ANIm
conversion does not end
ANIm
ANIm
ANIm