User's Manual

USER MANUAL

PTM 215B – 2.4 GHZ Pusbutton Transmitter Module

2.11.3 Public data

Public data can be read by any NFC-capable device supporting the ISO/IEC 14443 Part 2

and 3 standard. No specific security measures are used to restrict read access to this data.

The following items are located in the public data area:

n PTM 215B Static Source Address (32 Bit, see chapter 2.9.4.1)

n PTM 215B Product Name (this is always “PTM 215B”)

n PTM 215B Product ID (up to 8 characters, to be assigned by the user)

n Telegram sequence counter (initialized to 0 during manufacturing and incremented for

each transmitted telegram)

Changing the Static Source Address and Product ID fields is only possible via protected data

access as described below to prevent unauthorized modification.

For security reasons, the telegram sequence counter cannot be written or reset by any

mechanism.

2.11.4 Protected Data

The following items are located in the protected data area:

n Source Address Write register

n Product ID Write register

n Security Key Write register

n Optional Data register

n Configuration register

n Customer Data