PCF7930/PCF7931/PCF7935

Many old cars use this transponder as immo transponder, this transponder support
generate many types special transponder. It mainly contains Password, Main memory, Shadow memory

Note: PCF7930 and PCF7931 dont have Shadow memory, only have Main memory. PCF7935 have this 2 memory both. Shadow memory only has 16 bytes

Main memory don’t require password
Shadow memory need Password

Write: You need read transponder success before write new one

 Read Transponder: Read Main memory don’t require password
 Write: For the transponder enabled Password feature, you must place correct
password in Password area before write

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