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ST25DV04KC Datasheet(PDF) 51 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) 51 Page - STMicroelectronics

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5.5.4
EH delivery sequence
Figure 27. ST25DVxxKC Energy Harvesting Delivery Sequence
RF
Field(1)
Boot
No
Boot
No
Boot
Boot
With EH_MODE=0 :
Vcc
EH_EN
EH_ON
V_EH(2)
No
Boot
With EH_MODE=1 :
EH_EN
EH_ON
V_EH(2)
Reset
EH_EN
Set
EH_EN
Reset
EH_EN
Set
EH_EN
Reset
EH_EN
Set
EH_EN
Set
EH_EN
Set
EH_EN
Set
EH_EN
Reset
EH_EN
Reset
EH_EN
1.
We suppose that the captured RF power is sufficient to trig EH delivery.
2.
V_EH = 1 means some µW are available on V_EH pin.
V_EH = 0 means V_EH pin is in high-Z.
5.6
Data protection
ST25DVxxKC provides a special data protection mechanism based on passwords that unlock security sessions.
User memory can be protected for read and/or write access and system configuration can be protected from write
access, both from RF and I2C assess.
5.6.1
Data protection registers
Table 44. RFA1SS access
RF
I2C
Command
Type
Address
Type
Read Configuration (cmd code A0h) @04h
Write Configuration (cmd code A1h) @04h
R always, W if RF configuration security
session is open and configuration not
locked
E2=1, E1=1, 0004h R always, W if I
2C security
session is open
ST25DV04KC ST25DV16KC ST25DV64KC
Data protection
DS13519 - Rev 3
page 51/203



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