M24SR02-YU6T 데이터 시트보기 (PDF) - STMicroelectronics

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M24SR02-YU6T

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

STMicroelectronics 

Signal descriptions

M24SR02-Y

2.7.5

INT Interrupt configuration (GPO field = 0xX4 or 0x4X)

The I2C or RF host can send a negative pulse on the GPO pad. The GPO pad goes to the

low state at the end of the command and goes to the high state at the end of the M24SR02-

Y response.

During an RF or I2C session, when M24SR02-Y receives a valid Interrupt command,

M24SR02-Y GPO pin is driven low after (1) or (3) for a duration of (4) in RF, or after

responding in I2C (2). Then GPO pin is released.

Figure 7. GPO configured as INT (GPO field = 0xX4 or 0x4X)

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1. CmdSTPtoGPlow (I2C command Stop to GPO low)

2. After NewCmdlbFB (new I2C command last bit of first byte)

or

after AnswerlbFB (I2C answer last bit of first byte)

3. CmdEOFtoGPlow (RF command End of frame to GPO low)

4. GPO pulse duration

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18/90

DocID025386 Rev 10

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