Fujitsu F2MCTM-16LX Hardware Manual page 384

CHAPTER 18 8-/10-BIT A/D CONVERTER
Figure 18.5-5 Processing Flow of A/D Conversion Data Protection Function when Using EI
Note: The operation flow of when
the A/D converter is stopped is omitted.
Notes:
• The A/D conversion data protection function is activated only when an interrupt request is enabled. Set
the interrupt request enable bit in the A/D control status register (ADCS:INTE) to 1.
• The EI
interrupt request. If output of an interrupt request is disabled during a pause of A/D conversion
(ADCS:INTE = 0), A/D conversion may be restarted to rewrite data being transferred.
• The EI
during a pause of A/D conversion may cause loss of the A/D conversion results.
368
2
EI OS set
A/D continuous conversion
starts
First conversion terminates
Data in A/D data register stored
Second conversion terminates
2
EI OS end
YES
Data in A/D data register stored
Third conversion
Continued
Entire conversion terminates
2
EI OS terminates
YES
2
OS function is used to transfer the A/D conversion results to memory, do not disable output of an
2
OS function is used to transfer the A/D conversion results to memory, do not restart. Restarting
2
EI OS starts
NO
A/D pauses
2
EI OS starts
NO
A/D pauses
2
EI OS starts
Interrupt processing
A/D conversion pauses
End
2
OS