ib technology

15

Card UID

Command to return card status and UID (Unique Identifier or Serial number).

The acknowledge byte flags indicate general Tag status.

B7

B0

Command:

0 1 0 1 0 1 0 1

(ASCII “U”, 0x55)

Acknowledge:

1 1 F F F F F X

(F = Status flags)

Data only follows if card was selected OK with no errors detected.

Reply1:

D D D D D D D D

(D =MS Byte of UID/Serial number from card)

Reply2:

D D D D D D D D

Reply3:

D D D D D D D D

Reply4:

D D D D D D D D

(D =LS Byte of UID/Serial number from card)

Note that the CARD UID command works independently of the PASSWORD mode.

The PASSWORD authentication only occurs for READ/WRITE operations.

Hitag 2 Memory Map (PASSWORD mode)

The memory of the Hitag 2 transponder consists of 256 bits of very low power EEPROM

memory which is organised into 8 pages of 32 bits (4 bytes) each.

Page No.

Content (32 bit words/ 4 bytes)

0

Serial number

1

Password RWD

(Default = “MIKR” = 4D 49 4B 52 hex)

2

Reserved

3

8 bit Configuration, 24 bit Password TAG (Default = 06 AA 48 54 hex)

4

Read/Write page

5

Read/Write page

6

Read/Write page

7

Read/Write page