AN2284 datasheet(25/40 Pages) STMICROELECTRONICS

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AN2284

7 ISO 7816-3 - Electronic Signal and Transmission Protocol

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Update Binary:

A reader-side application can utilize this command to directly erase and store a contiguous

sequence of bytes in a transparent EF on the card. It effectively functions as a write command

i.e. a string of bytes provided in the command are written into the EF on the card. The input

parameters consist of an offset pointer from the start of the file as well as the number of bytes

to be written.

Erase Binary:

The Erase Binary command is used to clear bytes within a transparent EF on a card. Similarly

to the previous commands, the input parameters comprise an offset from the start of the EF to

the segment of bytes to be erased as well as the number of bytes to be erased.

Read Record:

This command is used to read and return the contents of one or more records in an EF on a

card. Unlike the previous command, the EF for the Read Record command must be a record-

oriented file. If it is applied to a transparent EF, the command will abort and an error will be

returned to the reader.

The following may be returned from this command, depending on the input parameters:

●

A specified record

●

All the records from the beginning of the file to a specific record

●

All the records from a specific record to the end of the file

Write Record:

This command is used to write a record into a record-oriented EF. As with the Write Binary

command, this command can be used to write a record into an EF, set or clear specific bits

within a specific record in an EF.

Append Record:

The Append Record command is used to add a record to the end of a linear, record-oriented EF

or to write the first record to a cyclic, record-oriented EF on a card.

Update Record:

This command writes a specific record into a record-oriented EF on a card. As with the Update

Binary command, the old record is erased and the new one is written into the EF.

Get Data:

This command reads and returns the contents of a data object stored within the file system on

the card. The Get Data command is card-specific as the definition of a data object varies

between different cards.

Put Data:

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