Tony Nixon wrote:
>Morgan Olsson wrote:
> > 
> > IĞm uncertain how/where to read the revision
> > 
> > I have some DIL40 marked
> > 
> > 16F877-20/P
> > 9924BSL
> > 
> > and some PLCC
> > 
> > PIC16F877-04/L
> > 9925SBN
>
>99 = year
>25 = week code (week of january 1 is week 01)
>S = 6 inch wafer line
>B = Mask revision number
>N = Assembly code of the manufacturing plant.
>
>These markings are explained on page 179 of the 16F8XX data sheet.

Oh, thanks.

>Unless you (or Microchip) made a mistake, they don't match your F877
>code, unless you change the BSL to SBL.

Strange, the DIL40 really reads "BSL"
As revision S is not here yet..., I believe Microchip did wrong marking, and it should be SBL.  

/Morgan