ST25DV64K datasheet(9/197 Pages) STMICROELECTRONICS

부품명	ST25DV64K

상세설명	Dynamic NFC/RFID tag IC with 4-, 16-, or 64-Kbit EEPROM, and fast transfer mode capability

PDF	197 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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3.2

Contactless interface

Device set in RF mode

To ensure a proper boot of the RF circuitry, the RF field must be turned on without any modulation for a minimum

period of time tBootRF. Before this time, the device ignores all received RF commands (see Figure 6).

Device reset in RF mode

To ensure a proper reset of the RF circuitry, the RF field must be turned off (100% modulation) for a minimum

period of time (tRF_OFF).

The RF access can be temporarily or indefinitely disabled by setting the appropriate value in the RF_MNGT or

RF_MNGT_Dyn registers.

Figure 6. RF power-up sequence (no DC supply)

RF interface ready

Power-up by RF

(no VCC ; VDCG)

GPO CMOS version

RF field

Vint_supply

tBootRF

GPO = RF_ACTIVITY

GPO = FIELD CHANGE

REQ

EOF

ANS

EOF

GPO = FIELD CHANGE AND RF_ACTIVITY

RF REQUEST

RF ANSWER

No access

allowed

RF or I2C

tminCD

No answer to RF

request, if any

IT duration

ST25DV04K ST25DV16K ST25DV64K

Contactless interface

DS10925 - Rev 11

page 9/197

ST25DV64K 데이터시트(PDF) 9 Page - STMicroelectronics