Datasheet

MF1S50YYX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.0 — 2 May 2011
196330 11 of 39
NXP Semiconductors
MF1S50yyX
MIFARE Classic 1K - Mainstream contactless smart card IC
8.7 Memory access
Before any memory operation can be done, the card has to be selected and authenticated
as described in Section 8.2
. The possible memory operations for an addressed block
depend on the key used during authentication and the access conditions stored in the
associated sector trailer.
Table 5. Memory operations
Operation Description Valid for Block Type
Read reads one memory block read/write, value and sector trailer
Write writes one memory block read/write, value and sector trailer
Increment increments the contents of a block and
stores the result in the internal data
register
value
Decrement decrements the contents of a block and
stores the result in the internal data
register
value
Transfer writes the contents of the internal data
register to a block
value
Restore reads the contents of a block into the
internal data register
value