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ST25TA02K-P Datasheet(PDF) 13 Page - STMicroelectronics

Part # ST25TA02K-P
Description  NFC Forum Type 4 Tag IC with 2-Kbit EEPROM and General Purpose Digital Output
PDF  64 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25TA02K-P Datasheet(HTML) 13 Page - STMicroelectronics

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ST25TA02K-P
Signal descriptions
2.4.1
Session Open configuration (GPO field = 0x10 or 0x90)
When the GPO is configured as "Session Open", it goes to the high state when an RF
session is ongoing (see Figure 5).
An RF session is taken when ST25TA02K-P receives a valid Select Application. The
session is released when:
•
ST25TA02K-P receives a valid Deselect command
•
RF field becomes OFF
GPO is driven high after a delay (1.) when the session is open.
GPO is released after a delay (2.) when the session is released.
Figure 5. GPO configured as Session Open (GPO field = 0x10 or 0x90)
1. CmdEOFtoGPhigh (RF command End of frame to GPORF Session pad high)
2. CmdEOFtoGPlow (RF command End of frame to GPORF Session pad low)



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