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參數(shù)資料
| 型號： | MF1S5031XDUF |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | MIFARE Classic 1K - Mainstream contactless smart card IC for fast and easy solution development |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC |
| 文件頁數(shù)： | 12/39頁 |
| 文件大小： | 685K |
| 代理商： | MF1S5031XDUF |
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MF1S50YYX
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.0 — 2 May 2011
196330
12 of 39
NXP Semiconductors
MF1S50yyX
MIFARE Classic 1K - Mainstream contactless smart card IC
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 MF1S50yyX ensures that the commands are executed only after
a successful authentication.
Table 6.
Access Bits
C1
3
, C2
3
, C3
3
C1
2
, C2
2
, C3
2
Access conditions
Valid Commands
read, write
read, write, increment, decrement,
transfer, restore
C1
1
, C2
1
, C3
1
read, write, increment, decrement,
transfer, restore
C1
0
,C2
0
, C3
0
read, write, increment, decrement,
transfer, restore
Block
3
2
Description
sector trailer
data block
→
→
→
1
data block
→
0
data block
Fig 10. Access conditions
001aan003
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Byte Number
Description
0
Key A
Key B (optional)
Access Bits
user data
Byte 6
C2
3
C2
2
C2
1
C2
0
C1
3
C1
2
C1
1
C1
0
7
Bit
6
5
4
3
2
1
0
Byte 7
C1
3
C1
2
C1
1
C1
0
C3
3
C3
2
C3
1
C3
0
Byte 8
C3
3
C3
2
C3
1
C3
0
C2
3
C2
2
C2
1
C2
0
Byte 9
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