Bernecker&Rainer Industrie-Elektronik Ges.m.b.H 5E903029 ユーザーズマニュアル

MIFARE 

16

Data sheet V 1.00 5E9030.29

Read

Reads a 16-byte block from PICC

"A" or "B"

See  table 

(parameter 2)

Source block --

--

Read_Blocks

Reads the specified range of blocks from PICC

"A" or "B"

See  table 

(parameter 2)

Starting block Ending block

--

Write

Writes a 16-byte block to PICC

"A" or "B"

See  table 

(parameter 2)

Destination

block

16-byte data in

hex 00h

--

Decr

Takes the value of the source value block, subtracts the

specified value and writes the result to the destination

block

"A" or "B"

See  table 

(parameter 2)

Source block Destination

block

Value

Incr

Takes  the  value  of  the  source  value  block,  adds  the

specified value and writes the result to the destination

block

"A" or "B"

See  table 

(parameter 2)

Source block Destination

block

Value

Restore

Copies a value block

"A" or "B"

See  table 

(parameter 2)

Source block Destination

block

--

InitZero

Initializes a value block with the value 0

"A" or "B"

See  table 

(parameter 2)

Destination

block

--

--

Store_Key_EEPROM Stores a 6-byte key in EEPROM

"A" or "B"

Sector  for  key

in 

reader's

EEPROM

6-byte key

Store_Key_Temp

Stores a 6-byte key in the transponder reader temporar-

ily until switched off

6-byte key

--

--

--

--

Connect

Connects manually to a specific tag

4-byte SNr

--

--

--

--

Disconnect

Automatically restores a connection to the best tag

--

--

--

--

--

Key_CMD

Sends a key directly with each command (default)

--

--

--

--

--

Key_EEPROM

Uses the key from EEPROM

--

--

--

--

--

Key_TEMP

Uses the temporary key

--

--

--

--

--

Table 6: MIFARE commands

The keys needed for authentication can be stored either in EEPROM or temporarily in the transponder. Alterna-

tively, the authentication keys can be transferred with the command.
The Key_EEPROM, Key_TEMP and Key_CMD commands are used to set the storage location or to send the

authentication keys.
The following commands are used to store the authentication key in the transponder.

Store_key_eeprom

"A" or "B"

Sector for key in reader's EEPROM

6-byte key

--

--

Store_key_temp

6-byte key

--

--

--

--

Table 7: MIFARE commands - Authentication key storage

store_key_eeprom,a,0,ff ff ff ff ff ff

"store_key_eeprom" command: The key is written to EEPROM sector 0.
Default key (when tags are delivered): 0xFF FF FF FF FF FF
Up to 16 keys (0 to 15) can be stored in EEPROM for each key (A and B).

The tag is divided into 16 sectors of 4 blocks each. Each block contains 16 bytes. The 4th block in each sector

contains the keys and access rights for the respective sector (sector trailer). Access rights can be assigned indi-

vidually to each block. Each sector can be assigned one of two different keys (A or B).