HITAG S 256 Reader-writer

[farid132097]

Hi everyone.
I'm new here, have some of the HITAG S 256 in my hand. I want to make a reader and writer for these tags. I want to implement it in a MCU (no discrete reader chips will be used). For these reason, I need some  reference documents for encoding and decoding of the waveforms. It would be nice if there are some good code examples with explanations.

Thanks

[Fabian_R]

Hello, I've been assigned to support your case.

I appreciate your interest in our products.

Unfortunately, we don't have an evaluation board that is based on our Hitag Reader IC. HTRC110 is our reader IC, in the datasheet, there's minimal application circuitry and its command set. Along with this Datasheet, I will recommend you to please check the Application note available, for a deeper understanding of the antenna design calculations and tunning.

If you are interested in getting an end solution, please contact one of our Partners that will definitely help you on getting the best end products.

[farid132097]

Thanks for your response. Also, the documents provided were helpful. As I mentioned in my post, I'll not use a dedicated reader chip. Rather I want to implement the whole thing in an MCU. For this, I must study the protocol associated with HITAG S 256. It would be very helpful for me if you can provide some docs regarding the protocol and data encoding and decoding process for this specific tag. 

I'm attaching two pictures and the schematic for your reference. The waveforms were captured after filtering (From pin 1 of U4 in the schematic, this pin is supposed to be connected to an MCU pin). I want to decode the waveforms of the attached pictures.