Data processing in array

[richard]

The probability to have 66 bits in a correct timing and also in the correct sequence, not mentioning the other safety measures of keeloq like counter etc, is really low if not zero.

i would not expect to ever receive a malformed bit from a keeloq serial stream , the data may be useless however.
single point sampling should be ok imho

[Ioannis]

Agree.

Though I have checked various implementations of RF remote controls and many have wide tolerances from the specified timings.

I am very much sure that those chips are bad copies of the original Microchip one. But are out there... If interested, I have many test of original and copy chips with the timings in excel file.

Ioannis