1.1.6 Double Sample Conversions
When enabling a Double Sample Conversion (DSEN = 1) with no precharge
time (ADPRE = 0) and no Acquisition time (ADACQ =
0), the maximum number of cycles of acquisition
time is inserted prior to the second conversion. The first conversion will
be performed as expected with no precharge time and no Acquisition time. It
is only between the first and second conversions where a maximum number of
cycles of Acquisition time is performed unexpectedly.
Work around
Method 1:
Disable Double Sample Conversion (DSEN = 0) and perform two single
conversions back to back.
Method 2:
If adding acquisition time is acceptable, then select no precharge time along with the desired Acquisition time.
Affected Silicon Revisions
| A2 | A3 | ||||||
| X | X |