M24SR02-YDW6T/2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M24SR02-YDW6T/2

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

STMicroelectronics

M24SR02-YDW6T/2 Datasheet PDF : 90 Pages

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I²C and RF command sets

M24SR02-Y

5.7.2

Table 39 defines the R-APDU of the Verify command.

Data

Table 39. R-APDU of the Verify command

SW1

SW2

Comment

Length

Value

1 byte

1 byte -

0x90

0x00 Command completed, the password is correct

0x69

0x85

The conditions of use are not satisfied (e.g. no

NDEF file was selected)

0x69

0x81 Cmd incompatible with file structure

0x69

0x82 Security status not satisfied

0x6A

0x80 Incorrect parameter in cmd data field

0x63

0x00 A password is required

0x63

0xCX (1)

The password transmitted is incorrect and X

encodes the number of further allowed retries.

0x6E

0x00 Class not supported

1. At each session, the RF host can check a password 3 times.

Change Reference Data command

The Change Reference Data command replaces the read or write password related to the

NDEF files previously selected. It can be performed only if the security status satisfies the

security attributes for this command.

Before sending this command, the verify command with the correct NDEF write password

shall be issued. Thus, this command changes the reference data of the NDEF file.

Table 40 defines the Change Reference Data command.

Table 40. Change reference data command format

Name

CLA

INS

P1 & P2

Data

0x00

0x24

2 bytes

1 byte

Lc bytes

Class byte

Instruction code

Password identification

0x0001: Read password transmit

0x0002: Write password transmit

0x0003: I²C password transmit (1)

Other: RFU

0x10: the password is present in the data field

NDEF file or I²C Password

1. This code can only be issued by the I²C host.

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