HT-CM400 NXP Semiconductors, HT-CM400 Datasheet - Page 90

• Manufacturer Part Number: HT-CM400
• Description: Ht Cm400; Ht Rm440 Family; Ht Rm800 Family Interface Protocol Reader - Host
• Manufacturer: NXP Semiconductors

Transponders
Rev. 1.0
98-02-10
4.3 PIT (PCF793x) Transponders
4.3.1 Memory Organization
The EEPROM provides a memory capacity of 128 bytes. It is organized in 8 blocks, each block
consisting of 16 bytes. This capacity is split into 6 blocks (=96 bytes) for reading/writing of user
data and into 2 blocks (=32 bytes) for the control of the memory access.
The user memory partitioning is shown below.
Blocks 0 and 1 store information for read/write access control. The intention of these blocks is to
provide some flexibility for different applications in terms of data security and access to relevant
information.
ATTENTION:
PIT transponders can only be accessed using the proximity read/write device !
Htswp.doc/HS
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