FUJITSU MB91F109 FR30 - Manual (Page 303)

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11.5 Conversion Data Protection Function
Figure 11.5-1 Workflow of the Data Protection Function when DMA Transfer is Used
NO
YES
YES NO
*
End
DMAC end interrupt routine
Set DMAC
The workflow for A/D converter termination is omitted.
Start of continuous
A/D conversion
End of one cycle
of conversion
Store conversion data
in data register
End of 2nd cycle
of conversion
Start DMAC
End of transfer?
Stop A/D converter
temporarily
Store conversion data
in data register
End of third
conversion
Start DMAC
Continue
End of last
conversion
Start DMAC
and transfer
Stop A/D
converter
*1: Restarting the A/D converter in stopped state may lead to loss of the stored conversion data.