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ST25DV04K 데이터시트(PDF) 27 Page - STMicroelectronics

부품명 ST25DV04K
상세설명  Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, and fast transfer mode capability
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ST25DV04K 데이터시트(HTML) 27 Page - STMicroelectronics

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Figure 11. Fast transfer mode mailbox access management.
Watchdog trig
I2C
read
full
msg
RF
read
full
msg
I2C read
MB_CTRL_Dyn
RF read
MB_CTRL_Dyn
FTM disabled
MB_CTRL_Dyn=00h
No access
FTM enabled
Mailbox empty
MB_CTRL_Dyn=01h
R/W access
FTM enabled
RF Message
MB_CTRL_Dyn=85h
Read access
FTM enabled
Mailbox free
MB_CTRL_Dyn=41/81h
R/W access
FTM enabled
I2C Message
MB_CTRL_Dyn=43h
Read access
MB_EN=00h or
VCC OFF
FTM enabled
Mailbox free
MB_CTRL_Dyn=61/91h
R/W access
MB_EN=00h or
VCC OFF
MB_EN=00h or
VCC OFF
VCC ON and
MB_EN=01h
I2C write msg
RF write msg
I2C read msg
RF read msg
Watchdog trig
Mailbox free
Note:
Assuming MB_MODE=01h
Assuming no error occurred
5.2
GPO
GPO signal is used to alert the I2C host of external RF events or ST25DVxxx processes activity. Several causes
could be used to request a host interruption. RF user can also directly drive GPO pin level using a dedicated RF
command.
5.2.1
ST25DVxxx interrupt capabilities on RF events
ST25DVxxx supports multi interruption mode and can report several events occurring through RF interface.
In this chapter, all drawings are referring to the open drain version of GPO output (ST25DVxxK-IE).
The reader can retrieve the behaviour of CMOS version (ST25DVxxK-JF) by inverting the GPO curve polarity and
replace in text “released” or “high-Z” by “pull to ground”.
Supported RF events is listed hereafter:
ST25DV04K ST25DV16K ST25DV64K
GPO
DS10925 - Rev 9
page 27/200



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