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ajit
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Quote ajit Replybullet Topic: circuit diagram of Smart Cards with I2C EPROM
    Posted: 08-Jan-2010 at 8:06pm
can u give circuit diagram of Smart Cards with I2C EPROM
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PrashanthS
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Quote PrashanthS Replybullet Posted: 21-Feb-2010 at 10:11pm
Gold wafer cards

The Gold smart card incorporates just two ICs: a PIC16F84(A) and a 24(L)C16 EEPROM.

The diagram depicts the internal interconnections. As you can see, the EEPROM is not wired to the interface contacts but is controlled exclusively by the PIC.

In a real application, the PIC is programmed with a card operating system. The function of this operating system depends entirely on the card's application but at least one of its tasks is to provide access to EEPROM data via the interface.

With this arrangement, the requirements for EEPROM access are quite straightforward. They entail a relatively simple hardware interface to the card and some software that can speak the ISO protocol. This was the basis of the first reader/programmer design.




How it works

As outlined earlier, the cards that we wish to read and write contain two separate ICs: a PIC microcontroller and an EEPROM. To access the EEPROM, a Smartmouse or Phoenix-type interface is required. On the other hand, to read or program the PIC's internal memories, a PIC programming interface is required.

The design solves this conundrum by providing both types of interfaces. A 4-pole 2-position pushbutton switch (S1) is used to select between the two interfaces, or "modes". The fig shows the circuit details for the Smart Card Reader/Programmer.



Source: Darkwire

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LokeshNash
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Quote LokeshNash Replybullet Posted: 21-Feb-2010 at 10:17pm
Check if these help....



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LokeshNash
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Quote LokeshNash Replybullet Posted: 21-Feb-2010 at 10:30pm
A nice pdf on ST14C02C Memory Card IC - 2 Kbit (256 x 8) Serial I2C Bus EEPROM

Serial I2C Bus EEPROM Datasheet

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