microcontroller and sim card interface

EDAboard.com Forum Index -> Microcontrollers -> microcontroller and sim card interface

Author

Message

ezequiel.aceto

Joined: 07 Jan 2006
Posts: 11
Location: Buenos Aires

07 Jan 2006 21:12 microcontroller sim

Hello

I have many 64Kb Sim cards from GSM phones. These cards have 64Kb for custom Java programs. I would like to know how to interface these cards to a microcontroller, so to write and read information to the card. I hope somebody can help me. My idea is to load a program in a sim card, and when connected to the MCU, the MCU upload the program to its flash and starts running the new program. The MCU may be an Atmel AVR or a Philips AMR7.

Thanks
Ezequiel

Sceadwian

Joined: 25 Sep 2005
Posts: 175
Helped: 13

08 Jan 2006 1:16 sim card interface to a microcontroller

SIM cards are a relativly closed standard, the cell phone companies don't want you knowing how to access them because it can result in celluar phone copying. You're better off selling the sim cards to someone that can use them (like a cell phone company) and using something like SD cards or memory sticks (Which are of comparable size) There are many refrences to how to access these cards and they come in sizes significantly over 64kb for very little cost.