mf1s503x NXP Semiconductors, mf1s503x Datasheet - Page 12

• Manufacturer Part Number: mf1s503x
• Description: Mf1s503x Mifare Classic 1k - Mainstream Contactless Smart Card Ic For Fast And Easy Solution Development
• Manufacturer: NXP Semiconductors

NXP Semiconductors
MF1S503x
Product data sheet
PUBLIC
8.7.2 Access conditions for the sector trailer
Depending on the access bits for the sector trailer (block 3) the read/write access to the
keys and the access bits is specified as ‘never’, ‘key A’, ‘key B’ or key A|B’ (key A or
key B).
On chip delivery the access conditions for the sector trailers and key A are predefined as
transport configuration. Since key B may be read in the transport configuration, new cards
must be authenticated with key A. Since the access bits themselves can also be blocked,
special care has to be taken during personalization of cards.
Table 6.
[1]
Access bits
C1 C2 C3 read
0
0
1
1
0
0
1
1
Fig 9.
for this access condition key B is readable and may be used for data
0
1
0
1
0
1
0
1
Byte Number
Access conditions
Description
0
0
0
0
1
1
1
1
Access conditions for the sector trailer
Byte 6
Byte 7
Byte 8
Byte 9
Access condition for
KEYA
never
never
never
never
never
never
never
never
All information provided in this document is subject to legal disclaimers.
Bit
Rev. 3.1 — 21 February 2011
0
C2
C1
C3
write
key A
never
key B
never
key A
key B
never
never
7
3
3
3
1
MIFARE Classic 1K - Mainstream contactless smart card IC
2
Key A
C2
C1
C3
194031
6
2
2
2
Access bits
read
key A
key A
key A|B never
key A|B never
key A
key A|B key B
key A|B key B
key A|B never
3
4
C2
C1
C3
5
1
1
1
5
write
never
never
key A
6
C2
C1
C3
Access Bits
4
user data
0
0
0
7
KEYB
read
key A
key A
never
never
key A
never
never
never
8
C1
C3
C2
3
3
3
3
9
10
write
key A
never
key B
never
key A
key B
never
never
C1
C3
C2
2
2
2
2
11
Key B (optional)
12
Remark
Key B may be read
Key B may be read
Key B may be read,
transport configuration
C1
C3
C2
1
MF1S503x
1
1
1
13
© NXP B.V. 2011. All rights reserved.
14
C1
C3
C2
001aan003
0
0
0
0
15
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