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ST25TA02K-D Datasheet(PDF) 16 Page - STMicroelectronics

Part # ST25TA02K-D
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-D Datasheet(HTML) 16 Page - STMicroelectronics

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Signal descriptions
ST25TA02K-D
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DocID027817 Rev 1
2.3.4
INT Interrupt configuration (GPO field = 0x40 or 0xC0)
The RF host can send a negative pulse on the GPO pad. The GPO pad goes to high state at
the end of the command and goes to the high state at the end of the ST25TA02K-D
response (see Figure 8).
During an RF session, when ST25TA02K-D receives a valid Interrupt command,
ST25TA02K-D GPO pin is driven high after (1.). Then GPO pin is released at the end of the
response (2.).
Figure 8. GPO configured as INT (GPO field = 0x40 or 0xC0)
1. CmdEOFtoGPlow (RF command End of frame to GPO low)
2. RespEOFGPlow



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