ST25DV04KC datasheet(30/203 Pages) 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

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RF off mode can be exited with the I2C “RFSwitchOn” command, or by removing the VCC power supply. Exiting

RF off mode reset the bit 2, RF_OFF, of RF_MNGT_Dyn register. When exiting RF off mode, ST25DVxxKC state

machine is set to Reset to Ready state, and all RF security sessions are closed.

Table 26. RF modes summary

RF mode

RF requests treatment

ISO15693 state

RF security sessions

Run

Executed normally

Changed by relevant RF requests

Disable

Not executed.

Error 0Fh returned when possible

Unchanged

Sleep

Not processed, not answered

Unchanged

Off

Not processed, not answered

Reset (back to reset to ready state)

Reset (all sessions closed)

Following table is summarizing the effect of RF_OFF, RF_SLEEP and RF_DISABLE bits, as well as I2C busy

state on any RF request:

Table 27. RF modes configuration bits and effect on RF requests

RF_OFF

RF_SLEEP

RF_DISABLE

I2C busy

Effect on RF request

Processed

Not processed and answered with error 0Fh when possible

No processed, not answered

ST25DV04KC ST25DV16KC ST25DV64KC

RF management feature

DS13519 - Rev 3

page 30/203

ST25DV04KC Datasheet(PDF) 30 Page - STMicroelectronics