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Smartd card and HC908.....?????

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Rfboy

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Hi guys,
I need to program only 50 bytes on a smart card , but i found only a very complex smart card type in ISO7816 protocol !!!!!
Where can I found a software routine in assembler for motorola 68hc908 microcontroller to program this type of card ????
Or is it possible to found another type of smart card in I2c protocoll ???

Thank you
 

M!k

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I think what you found in ISO7816 are the specs for T=0 and T=1. These are asynchronous communication-protocols for chipcards containing a microprocessor (higher security features ...). For storing only 50 Bytes you can use memory-cards using a synchronous communication (I2C, 2-wire, 3-wire). These cards are also much cheaper than a processor-card. I never tried it out, but for I2C-cards (look for cards containing for example these chips: ST14C02, M14C04 from ST, MCM2814 from Motorola) it should be possible to use the hardware-I2C-interface of the 68HC908 (if it got one). But these synchronous protocols can also be implemented in software (not timing-critical).
For cards look here:
http://www.zeitcontrol.de/


Mik
 

Rfboy

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Thank you very much ..... for your help !!!!!!!!!!!
 

mk3

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sync smartcard code example

I need to use a memory card from Siemens/Infineon. I have the datasheet, but I'm having troubles with my software... someone can show same example? or suggest something I can watch out?
 

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