Fujitsu F2MC-16LX Hardware Manual page 383

Note:
In a forced stop, conversion operation will stop before completion.
❍ Stop Mode
In this mode, analog input specified by the bits ANS and ANE is sequentially converted.
However, conversion operation stops temporarily after conversion of each channel. Start again
to release the stop.
Analog input of ANS will be resumed and A/D conversion will continue when conversion up to
the end channel specified by the bit ANE ends.
One-channel conversion will be performed if the start and end channels are the same. (ANS =
ANE)
Example:
ANS = 000, ANE = 011
Start --> AN0 --> Stop --> Activate --> AN1 --> Stop --> Activate -->
--> AN2 --> Stop --> Activate --> AN3 --> Stop --> Activate --> ...... Repeat
ANS = 010, ANE = 010
Start --> AN2 --> Stop --> Activate --> AN2 --> Stop --> Activate --> ...... Repeat
Only startup sources specified by STS1 and 0 can be used in this mode.
Operation in this mode enables synchronizing the start of multiple conversions.
I Conversion operation using µ µ µ µ DMA
Figure 19.3-1 "Example of operation flow (in continuous mode) from start of A/D conversion to
transfer of conversion data" shows an example of the operational flow (in continuous mode)
from start of A/D conversion to transfer of conversion data.
The result of the decision operation marked by " " in the diagram is decided based on the
settings of µDMA.
Figure 19.3-1 Example of operation flow (in continuous mode) from start of A/D conversion to transfer
A/D Conversion Start
Sample and hold
Conversion
Conversion end
Interrupt triggered
CHAPTER 19 8/10-BIT A/D CONVERTER
of conversion data
µDMA start
Data transfer
Interrupt clear
Interrupt processing
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