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ST25DV04KC Datasheet(PDF) 40 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) 40 Page - STMicroelectronics

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RF_WRITE:
•
When RF_WRITE is activated, a pulse of duration IT_TIME is emitted at completion of a valid RF write
operation in EEPROM (after EOF of ST25DVxxKC response).
•
Following commands trigger the RF_WRITE interrupt after a valid write operation in EEPROM:
–
Write Single Block
–
Extended Write Single Block
–
Write Multiple Block
–
Extended Write Multiple Block
–
Lock Block
–
Extended Lock Block
–
Write AFI
–
Lock AFI
–
Write DSFID
–
Lock DSFID
–
Write Configuration
–
Write Password
•
Note that writing in dynamic registers or fast transfer mode mailbox does not trigger RF_WRITE interrupt (no
write operation in EEPROM).
Figure 23. RF_WRITE chronogram
1) VCD sends a write command and ST25DVxxKC replies after write completed.
GPO/RF_WRITE generates a pulse during IT_TIME after ST25DVxxKC response.
S
O
F
E
O
F
5) VCD sends any command and ST25DV GPO/RF_ stays quiet (command not for this VICC, or quiet state).
RF_ACTIVITY remains high-Z.
(m*)Wt
VCD
Command
GPO/RF_WRITE
GPO/RF_WRITE (OD)
S
O
F
E
O
F
ST25DVxxKC
reply
S
O
F
Write
command
E
O
F
3) VCD sends a write command and ST25DV GPO/RF_ replies with error.
GPO/RF_WRITE remains high-Z.
t1
GPO/RF_WRITE
S
O
F
E
O
F
ST25DVxxKC
reply
S
O
F
Write
command
E
O
F
2) VCD sends a write command with option flag set to 1, and ST25DVxxKC replies after receiving EOF.
GPO/RF_WRITE generates a pulse during IT_TIME after ST25DV response.
>(m*)Wt
GPO/RF_WRITE
S
O
F
E
O
F
ST25DVxxKC
reply
S
O
F
Write
command
E
O
F
E
O
F
t1
4) VCD sends any other command than a write command. GPO/RF_WRITE remains high-Z.
t1
GPO/RF_WRITE
S
O
F
E
O
F
ST25DVxxKC
reply
S
O
F
Any other
command
E
O
F
ST25DV04KC ST25DV16KC ST25DV64KC
GPO
DS13519 - Rev 3
page 40/203



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