Fujitsu MB90460 Series, Hardware Manual, Page: 581 / 739

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CHAPTER 20 8/10-BIT A/D CONVERTER
Figure 20.6-5 Operation Flowchart of the Data Protection Function when EI
2
OS is used
Notes:
• The conversion data protection function operates only in the interrupt enabled state (ADCS1: INTE = 1).
• If interrupts are disabled during a pause in A/D conversion while EI
2
OS is operating, A/D conversion
may start again. This will cause new data to be written before the old data is transferred.
Reactivation attempted during a pause will cause the old data to be destroyed.
• Reactivation attempted during a pause will destroy the standby data.
S et EI
2
O S
S t a rt contin u o us A/D
conver s ion
End fir s t conver s ion
S tore d a t a in the d a t a
regi s ter
End s econd conver s ion
H as EI
2
O S
ended?
S tore d a t a in the d a t a
regi s ter
Third conver s ion
Termin a te a ll conver s ion s
S tore d a t a in the d a t a
regi s ter
Activ a te EI
2
O S
H a lt A/D
Activ a te EI 2 O S
Activ a te EI
2
O S
Initi a lize or s top A/D
End
NO
Interr u pt proce ss ing ro u tine
YE S
<Note> The s tep s while the A/D converter i s h a lted a re omitted.
Contin u e
Contin u e