Atmel ATAK2270 5.4 Operating Common Transponder Features

Host Software
RFID Application Kit ATAK2270 User Manual 5-23
4871E–RFID–04/08
5.4 Operating Common Transponder Features
5.4.1 Password PWD Mode
The transponder can be protected from unauthorized overwriting of memory data using passwords. If the
transponder is configured in password mode, each block write command sent to the transponder has to
be expanded by the expected password as specifed by the content of block7. To avoid data transmission
of Block 7, the transponder is configured with MAXBLK = 6; thus transponder will respond without the
hidden password contained in block 7.
5.4.1.1 Initializing Password Mode
Note: Commands in brackets relate to SW description for 5551, 5557, and 5567.
1. Place a transponder in close proximity to the reader antenna.
2. Select the Write tab and type an individual password (in hex) into the Block 7 text box.
3. Click the Program Transponder button.
4. Open the Transp. Settings (Read) tab and set the following:
– Data rate RF/32
– Coding Manchester
– ID Code Length Block 1to7
– Signature Terminator (select the Terminator check-box)
– Password (Select the Password check box)
5. Click Write Configuration Set. (Configure Transponder) button. Password mode is initialized on the
transponder.
6. Select the Password check box in the Downlink area. Enter the password for Block 7 used in step 2
above (not needed for 5551, 5557 and 5567).
From now on reconfiguration or reprogramming of block data is only possible if the password in the
Downlink window matches the transponder password programmed in block 7.
5.4.1.2 Disabling Password Mode
1. Deselect the Password check box in the Transp. Settings (Read) tab and click Write Configuration
Set. (Configure Transponder). Password mode is disabled.
2. Deactivate the Password check box in the Downlink area. (Not needed for 5551, 5557 and 5567)