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ST25TB02K Datasheet(PDF) 28 Page - STMicroelectronics

No. de pieza ST25TB02K
Descripción Electrónicos  13.56 MHz short-range contactless memory chip with 2048-bit EEPROM and anticollision functions
PDF  47 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25TB02K Datasheet(HTML) 28 Page - STMicroelectronics

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8.6
Reset_to_inventory() command
Command code = 0Ch
On receiving the Reset_to_inventory() command, all ST25TB02K devices in Selected state revert to Inventory
state. The concerned ST25TB02K devices are thus resubmitted to the anticollision sequence. This command is
useful when two ST25TB02K devices with the same 8-bit Chip_ID happen to be in Selected state at the same
time. Forcing them to go through the anticollision sequence again allows the reader to generates new Pcall16()
commands and so, to set new random Chip_IDs.
The Reset_to_inventory() command does not generate a response.
All ST25TB02K devices that are not in Selected state ignore the Reset_to_inventory() command.
Figure 33. Reset_to_inventory request format
SOF
RESET_TO_INVENTORY
CRCL
CRCH
EOF
0Ch
8 bits
8 bits
Request parameter:
•
No parameter
Figure 34. Reset_to_inventory response format
No Response
Figure 35. Reset_to_inventory frame exchange between reader and ST25TB02K
SOF
0Ch
CRCL CRCH EOF
Reader
ST25TBxxx
No Response
ST25TB02K
Reset_to_inventory() command
DS11469 - Rev 7
page 28/47



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