DocID024597 Rev 5 557/1830
RM0351 Analog-to-digital converters (ADC)
614
Oversampling regular channels only
The regular oversampling mode bit ROVSM defines how the regular oversampling
sequence is resumed if it is interrupted by injected conversion:
• in continued mode, the accumulation re-starts from the last valid data (prior to the
conversion abort request due to the injected trigger). This ensures that oversampling
will be completed whatever the injection frequency (providing at least one regular
conversion can be completed between triggers);
• in resumed mode, the accumulation re-starts from 0 (previous conversions results are
ignored). This mode allows to guarantee that all data used for oversampling were
converted back-to-back within a single timeslot. Care must be taken to have a injection
trigger period above the oversampling period length. If this condition is not respected,
the oversampling cannot be completed and the regular sequencer will be blocked.
The Figure 114 gives examples for a 4x oversampling ratio.
Figure 114. Regular oversampling modes (4x ratio)
Oversampling Injected channels only
The Injected oversampling mode bit JOVSE enables oversampling solely for conversions in
the injected sequencer.
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