Alessandro Zummo wrote:
>
>  Anyone has a working project with a PIC
>  and a U2270B?
>
> --
>
>    - *Alex* -
>
>   http://freepage.logicom.it/azummo/
Yes,
my very own project, reads other access control technologies also.

BEWARE the e5530 read only transponder, the checksum algorithm isn't,
the checksum is, but application engineers & Temic sales are blind to
it.

Possibly e5530 is dead product but without public funeral.

U2270b needs pullup on output, easy to miss when looking at micro
connections in data sheet, as not shown.

regards,

Graham Daniel,
Electronic Product Enhancements.