TK5552A-PP Atmel, TK5552A-PP Datasheet - Page 19

• Manufacturer Part Number: TK5552A-PP
• Manufacturer: Atmel

Specifications of TK5552A-PP

• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

8.9
8.9.1
8.9.2
8.9.3
4698B–RFID–08/05
EEPROM Memory Organization
Lock Bit
Memory Map
Configuration Data Block
The memory array of the transponder IC consists of 1,056-bits of EEPROM, arranged in 32 indi-
vidually addressable blocks of 33 bits each, consisting of one lock bit and 32 data bits. All 33
bits, including the lock bit, are programmed simultaneously.
The programming voltage is generated on-chip.
Each block has an associated write lock bit that protects the entire block. By default all lock bits
L are reset (0).
Note:
The configuration data of the transponder IC is stored in block 0 of the EEPROM.
The remaining 31 data blocks (1 to 31) each consist of 1 lock bit and 32 user data bits.
Figure 8-12. Memory Map
This data block contains 9 configuration bits. The remaining bits of block 0 are reserved for
future enhancements and should be set to 0.
Note:
• Start-up Delay bit (SD, default: NO delay).
• Data Rate bit (DR, default: RF/16).
• Modulation Select bit (MS, default is PSK)
• Modulation Defeat bit (MD, default is OFF)
• MAXBLK address bits (MAXBLK, default is 31)
When set, an additional delay time of 64 ms is added after any internal reset.
Selects the data rate of RF/16 or RF/32.
Selects the type of data encoding which is either Manchester or PSK.
When set (to 1) the modulation output is deactivated, hence no data will be transmitted. The
modulation defeat state does not impact the transponder damping function.
This 5-bit block address is used to define the upper limit of cyclic block reads.
Once set, the lock bit and the content of the associated block cannot be altered.
The configuration is changed by re-programming block 0 as long as the corresponding lock bit is
not set. The default settings can be lost due to the die cut.
0
L
L
L
L
L
L
1
Not transmitted
33 bits total (incl. one lock bit)
Configuration data block
User data bits
User data bits
User data bits
User data bits
User data bits
32
Block 0
Block 1
Block 2
Block 29
Block 30
Block 31
TK5552
19