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ST25DV04KC Datasheet(PDF) 25 Page - STMicroelectronics

Part # ST25DV04KC
Description  Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, fast transfer mode capability and optimized I2C
PDF  203 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25DV04KC Datasheet(HTML) 25 Page - STMicroelectronics

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Figure 11. RF to I2C fast transfer mode operation
I2C host
ST25DV
Fast Transfer Mode mailbox
(256 Bytes)
Dynamic registers
MB_LEN_Dyn
MB_CRTL_Dyn
Static register
FTM
ISO/IEC
15693 reader
I2C
GPO/RF_PUT_MSG
RF message
1Mb/s
26.5kb/s
To send data from the I2C host to the RF reader, fast transfer mode must be enabled, the mailbox must be free,
VCC power must be present, and the I2C host must first write the message containing data in the mailbox.
The RF user must poll on MB_CTRL_Dyn register to check for the presence of a message from I2C in the
mailbox.
Once the complete message has been read by RF user, mailbox is considered free again and is available for
receiving a new message (data is not cleared).
The I2C host is informed that message has been read by RF user through a GPO interruption or by polling on the
MB_CTRL_Dyn register.
Figure 12. I2C to RF fast transfer mode operation
I2C host
ST25DV
Fast Transfer Mode mailbox
(256 Bytes)
Dynamic registers
MB_LEN_Dyn
MB_CRTL_Dyn
Static register
FTM
ISO/IEC
15693 reader
I2C
GPO/RF_GET_MSG
Host message
1Mb/s
Up to
53kb/s
VCC supply source is mandatory to activate this feature.
No precedence rule is applied: the first request is served first.
ST25DV04KC ST25DV16KC ST25DV64KC
Fast transfer mode (FTM)
DS13519 - Rev 3
page 25/203



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