Data Sheet

001052 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 5.2 — 15 January 2007 10 of 17
NXP Semiconductors
MF1 IC S50
Functional specification
6.7 Memory access
Before any memory operation can be carried out, the card has to be selected and
authenticated as described previously.The possible memory operations for an addressed
block depend on the key used and the access conditions stored in the associated sector
trailer.
Fig 8. Memory access
Identification and Selection Procedure
Authentication Procedure
Memory Operations
Value Block
Read, Write, Increment, Decrement, Transfer, Restore
Read/Write Block
Read, Write
POR
New Command without
Change of Sector
Change of Sector
Halt