MF3ICDX21_41_81_SDS

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Product short data sheet

COMPANY PUBLIC

Rev. 3.2 — 9 December 2015

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NXP Semiconductors

MF3ICDx21_41_81

MIFARE DESFire EV1 contactless multi-application IC

9.5 MIFARE DESFire EV1 command set overview – application level

commands

Remark: All command and data frames are exchanged between MIFARE DESFire EV1

and PCD by using block format as defined in ISO/IEC 14443-4.

9.6 MIFARE DESFire EV1 command set overview – data manipulation

commands

Table 8.

Application level commands

Command

Description

Get FileIDs

returns the File IDentifiers of all active files within the currently selected

application

Get FileSettings

gets information on the properties of a specific file

Change FileSettings

changes the access parameters of an existing file

Create StdDataFile

creates files for the storage of plain unformatted user data within an

existing application on the MIFARE DESFire EV1

Create

BackupDataFile

creates files for the storage of plain unformatted user data within an

existing application on the MIFARE DESFire EV1, additionally supporting

the feature of an integrated backup mechanism

Create ValueFile

creates files for the storage and manipulation of 32-bit signed integer

values within an existing application on the MIFARE DESFire EV1

Create

LinearRecordFile

creates files for multiple storage of similar structural data, for example,

loyalty programs within an existing application on the MIFARE DESFire

EV1; once the file is filled completely with data records, further writing to

the file is not possible unless it is cleared

Create

CyclicRecordFile

creates files for multiple storage of similar structural data, for example,

logging transactions within an existing application on the MIFARE DESFire

EV1; once the file is filled completely with data records, the MIFARE

DESFire EV1 automatically overwrites the oldest record with the latest

written one (this wrap is fully transparent for the PCD)

DeleteFile

permanently deactivates a file within the file directory of the currently

selected application

Table 9.

Data manipulation commands

Command

Description

Read Data

reads data from Standard Data files or Backup Data files

Write Data

writes data to Standard Data files or Backup Data files

Get Value

reads the currently stored value from Value files

Credit

increases a value stored in a Value file

Debit

decreases a value stored in a Value file

Limited Credit

allows a limited increase of a value stored in a Value file without

having full Credit permissions to the file

Write Record

writes data to a record in a Cyclic or Linear Record file

Read Records

reads out a set of complete records from a Cyclic or Linear Record

file