M24SR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M24SR

Dynamic NFC/RFID tag IC with 2-Kbit EEPROM, NFC Forum Type 4 Tag and I²C interface

STMicroelectronics 

M24SR02-Y memory management

M24SR02-Y

File offset

0x0003

Table 7. Details about I2C watchdog

b7- b0

The “I2C Watchdog” ensures the I2C host will not keep the session open, while

there is no more activity on the I2C bus (between the stop bit of the previous

transaction and the start bit of the next one)

– 0x00 (default value): the Watchdog is off

– Other values: If programmed to a non null value N, the Watchdog is enabled

and counts N*30 ms (30 ms is approximate) before releasing the I2C session.

Table 8. Details about the GPO field

File offset

b7

b6-b4

b3

0x0004

RFU

When an RF session is open:

0b000: High impedance

0b001: Session opened

0b010: WIP

0b011: MIP

0b100: Interrupt

0b101: State Control

0b110: RF Busy

0b111: RFU

RFU

When an I²C session is open:

0b000: High impedance

0b001: Session opened

0b010: WIP

0b011: I²C Answer Ready

0b100: Interrupt

0b101: State Control

0b110: RFU

0b111: RFU

b2-b0

Table 9. Details about the RF Session field

File offset

b7

b6-b4

0x0004

RFU

When an RF session is open:

0b001: Session opened

RFU

b3-b0

24/90

DocID025386 Rev 10

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