SL3ICS3001 datasheet(40/54 Pages) NXP

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SL3ICS3001_072831

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Product data sheet

COMPANY PUBLIC

Rev. 3.1 — 9 July 2012

072831

40 of 54

NXP Semiconductors

SL3ICS3001

UCODE HSL

11.4.7 WRITE

When receiving the WRITE command, the tag compares the sent ID with its UID. In case

the ID is equal to the UID, the tag moves to the DATA_EXCHANGE state, reads the lock

information for the byte on the specified memory content beginning at the specified

address. In case the memory is locked, it sends back the ERROR response. In case of

unlocked, it sends back ACKNOWLEDGE and program the data into the specified

memory address.

In case the write access was successful, the tag sets the WRITE_OK bit. Otherwise, it will

reset it.

Further the tag marks the byte at ADDRESS lockable in the lockable state machine.

In all other cases the tag will not send any reply.

See Section 11.4.13 “Exception handling for fast return link mode” for a special return link

behaviour if the 4x STDEL is used.

Command sequence

Preamble

Start Delimiter

Command

ADDRESS

BYTE_DATA

CRC

WAIT

Response sequence in case of matching UID but locked byte

Return Preamble

ERROR

CRC

Response sequence in case of matching UID and unlocked byte

Return Preamble

ACKNOWLEDGE

CRC

EEPROM programming process

SL3ICS3001 Datasheet(PDF) 40 Page - NXP Semiconductors