Product Data Sheet

MF1S50yyX_V1 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.0 — 3 March 2014
279230 6 of 40
NXP Semiconductors
MF1S50yyX/V1
MIFARE Classic EV1 1K - Mainstream contactless smart card IC
Remark: For the 4-byte non-unique ID product versions, the identifier retrieved from the
card is not defined to be unique. For further information regarding handling of non-unique
identifiers see Ref. 6
.
8.2.3 Select card
With the select card command the reader selects one individual card for authentication
and memory related operations. The card returns the Select AcKnowledge (SAK) code
which determines the type of the selected card, see Section 9.4
. For further details refer to
the document Ref. 2
.
8.2.4 Three pass authentication
After selection of a card the reader specifies the memory location of the following memory
access and uses the corresponding key for the three pass authentication procedure. After
a successful authentication all commands and responses are encrypted.
Remark: The HLTA command needs to be sent encrypted to the PICC after a successful
authentication in order to be accepted.
(1) the command flow diagram does not include the Personalize UID Usage and the
SET_MOD_TYPE command, for details on those commands please see Section 10.1.1
and
Section 11
Fig 4. MIFARE Classic command flow diagram
Request Standard Request All
Anticollision Loop
Get Identifier
Select Card
3 Pass Authenticationon
specific sector
Read
Block
Write
Block
Decre-
ment
Incre-
ment
Re-
store
Halt
Transfer
Identification and Selection
Procedure
~2.5 ms without collision
+ ~1 ms for 7-byte UID
Typical Transaction Time
Authentication Procedure
~2 ms
Transaction Sequence
POR
Memory Operations
~2.5 ms read block
~5.5 ms write block
~2.5 ms de-/increment
~4.5 ms transfer
+ ~1 ms for each collision
001aan921