NXP Semiconductors
MF1S50YYX_V1
MIFARE Classic EV1 1K - Mainstream contactless smart card IC for fast and easy solution development
MF1S50yyX_V1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
Product data sheet Rev. 3.2 — 23 May 2018
COMPANY PUBLIC 279232 13 / 36
Access bits Access condition for Application
0 1 0 key A|B never never never read/write block
[1]
1 0 0 key A|B key B never never read/write block
[1]
1 1 0 key A|B key B key B key A|B value block
[1]
0 0 1 key A|B never never key A|B value block
[1]
0 1 1 key B key B never never read/write block
[1]
1 0 1 key B never never never read/write block
[1]
1 1 1 never never never never read/write block
[1] If key B may be read in the corresponding Sector Trailer it cannot serve for authentication (see grey marked lines in Table
7). As a consequences, if the reader authenticates any block of a sector which uses such access conditions for the Sector
Trailer and using key B, the card will refuse any subsequent memory access after authentication.
9 Command overview
Note: In this document the term „MIFARE Classic card“ refers to a MIFARE Classic IC-
based contactless card.
The MIFARE Classic card activation follows the ISO/IEC 14443 Type A. After the
MIFARE Classic card has been selected, it can either be deactivated using the ISO/IEC
14443 Halt command, or the MIFARE Classic commands can be performed. For more
details about the card activation refer to Ref. 4.
9.1 MIFARE Classic command overview
All MIFARE Classic commands typically use the MIFARE Classic using Crypto1 and
require an authentication.
All available commands for the MIFARE Classic EV1 with 1K memory are shown in Table
9.
Table 9. Command overview
Command ISO/IEC 14443 Command code
(hexadecimal)
Request REQA 26h (7 bit)
Wake-up WUPA 52h (7 bit)
Anticollision CL1 Anticollision CL1 93h 20h
Select CL1 Select CL1 93h 70h
Anticollision CL2 Anticollision CL2 95h 20h
Select CL2 Select CL2 95h 70h
Halt Halt 50h 00h
Authentication with Key A - 60h
Authentication with Key B - 61h
Personalize UID Usage - 40h
SET_MOD_TYPE - 43h
MIFARE Read - 30h