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ST25DV04K Datasheet(PDF) 77 Page - STMicroelectronics |
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ST25DV04K Datasheet(HTML) 77 Page - STMicroelectronics |
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77 / 220 page  DocID027603 Rev 4 77/220 ST25DV04K ST25DV16K ST25DV64K ST25DVxxx specific features 219 Figure 22. RF security sessions management The dedicated password commands in I2C mode are: • I2C Write Password command: see Section 6.6.2: I2C write password command description. • I2C Present Password command: see Section 6.6.2: I2C write password command description. I2C host possible actions for security sessions are: • Open I2C security session: I2C Present Password command with valid I2C password. • Write I2C password: I2C Present Password command with valid I2C password. Then I2C Write Password command with new I2C password. • Close I2C security session: I2C Present Password command with wrong I2C password. Or remove tag VCC power supply (POR). • Check if I2C security session is open: I2C host can read the current status (open or closed) of I2C security session by reading the I2C_SSO_Dyn register. |
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