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-Y

I²C and RF command sets

5.2.2

R-APDU: payload format of a response

the M24SR02-Y uses the I-Block format to reply to a command which used the I-Block

format. This format is described in Table 18.

Name

Length

Data

Status byte 1

Status byte 2

Table 18. R-APDU format

Payload field

Data (optional)

SW1

Le byte

1 byte

SW2

1 byte

5.3

R-Block format

The R-Block is used to convey positive or negative acknowledgment between the RF or I²C

host and the M24SR02-Y.

Table 19. R-Block format

PCB

R(ACK) without the DID field: 0xA2 or 0xA3

R(ACK) with the DID field: 0xAA or 0xAB

R(NAK) without the DID field: 0xB2 0xB3

R(NAK) with the DID field: 0xBA 0xBB

CRC

2 CRC bytes

There are two kinds of R-Blocks:

• R(ACK): the acknowledgment block sent by the RF or I²C host or by the M24SR02-Y.

• R(NAK): the non-acknowledgment block sent by the RF or I²C host or by the

M24SR02-Y.

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