mf1s7001xdud NXP Semiconductors, mf1s7001xdud Datasheet - Page 13

• Manufacturer Part Number: mf1s7001xdud
• Description: Mifare Classic 4k - Mainstream Contactless Smart Card Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
MF1S70YYX
Product data sheet
COMPANY PUBLIC
8.7.1 Access conditions
The access conditions for every data block and sector trailer are defined by 3 bits, which
are stored non-inverted and inverted in the sector trailer of the specified sector.
The access bits control the rights of memory access using the secret keys A and B. The
access conditions may be altered, provided one knows the relevant key and the current
access condition allows this operation.
Remark: With each memory access the internal logic verifies the format of the access
conditions. If it detects a format violation the whole sector is irreversibly blocked.
Remark: In the following description the access bits are mentioned in the non-inverted
mode only.
The internal logic of the MF1S70yyX ensures that the commands are executed only after
a successful authentication.
Table 6.
Access Bits
C1
C1
C1
C1
Fig 10. Access conditions
3
2
1
0
, C2
, C2
, C2
, C2
3
2
1
0
, C3
, C3
, C3
, C3
Byte Number
Description
Access conditions
3
2
1
0
Byte 6
Byte 7
Byte 8
Byte 9
Valid Commands
read, write
read, write, increment,
decrement, transfer, restore
read, write, increment,
decrement, transfer, restore
read, write, increment,
decrement, transfer, restore
All information provided in this document is subject to legal disclaimers.
Bit
0
C2
C1
C3
7
Rev. 3.0 — 2 May 2011
3
3
3
1
MIFARE Classic 4K - Mainstream contactless smart card IC
2
Key A
C2
C1
C3
196430
6
2
2
2
3
4
C2
C1
C3
5
1
1
1
5
→ 3
→ 2
→ 1
→ 0
6
C2
C1
C3
Block
(sectors 0 - 31)
Access Bits
4
user data
0
0
0
7
8
C1
C3
C2
3
3
3
3
9
10
C1
C3
C2
2
Block(s)
(sectors 32-39)
15
10-14
5-9
0-4
2
2
2
11
Key B (optional)
MF1S70yyX
12
C1
C3
C2
1
1
1
1
13
© NXP B.V. 2011. All rights reserved.
14
C1
C3
C2
001aan003
0
0
0
0
15
Description
sector trailer
data block(s)
data block(s)
data block(s)
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