mf1s503x NXP Semiconductors, mf1s503x Datasheet - Page 13

• 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
8.7.3 Access conditions for data blocks
Depending on the access bits for data blocks (blocks 0...2) the read/write access is
specified as ‘never’, ‘key A’, ‘key B’ or ‘key A|B’ (key A or key B). The setting of the
relevant access bits defines the application and the corresponding applicable commands.
Table 7.
[1]
Access bits
C1
0
0
1
1
0
0
1
1
•
•
•
•
Read/write block: the operations read and write are allowed.
Value block: Allows the additional value operations increment, decrement, transfer
and restore. With access condition ‘001’ only read and decrement are possible which
reflects a non-rechargeable card. For access condition ‘110’ recharging is possible by
using key B.
Manufacturer block: the read-only condition is not affected by the access bits setting!
Key management: in transport configuration key A must be used for authentication
if Key B may be read in the corresponding Sector Trailer it cannot serve for authentication (all grey marked
lines in previous table). As a consequences, if the reader authenticates any block of a sector which uses
the grey marked access conditions and using key B, the card will refuse any subsequent memory access
after authentication.
C2
0
1
0
1
0
1
0
1
Access conditions for data blocks
C3
0
0
0
0
1
1
1
1
All information provided in this document is subject to legal disclaimers.
Access condition for
read
key A|B
key A|B
key A|B
key A|B
key A|B
key B
key B
never
Rev. 3.1 — 21 February 2011
[1]
[1]
[1]
[1]
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[1]
MIFARE Classic 1K - Mainstream contactless smart card IC
194031
write
key A|B1
never
key B
key B
never
key B
never
never
1
1
1
increment
key A|B1
never
never
key B
never
never
never
never
1
decrement,
transfer,
restore
key A|B1
never
never
key A|B
key A|B
never
never
never
1
1
MF1S503x
© NXP B.V. 2011. All rights reserved.
Application
transport
configuration
read/write block
read/write block
value block
value block
read/write block
read/write block
read/write block
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