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參數(shù)資料
| 型號(hào)： | MF1S5035DUD |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | MIFARE Classic 1K - Mainstream contactless smart card IC for fast and easy solution development |
| 封裝： | MF1S5030DA3<SOT500|<<<1<Always Pb-free,;MF1S5030DA4<SOT500-2 (PLLMC)|<<http://www.nxp.com/packages/SOT500-2.html<1<Always Pb-free,;MF1S5030DA6<SOT500-3 (PLLMC)|& |
| 文件頁(yè)數(shù)： | 11/37頁(yè) |
| 文件大?。?/td> | 425K |
| 代理商： | MF1S5035DUD |
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MF1S503x
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.1 — 21 February 2011
194031
11 of 37
NXP Semiconductors
MF1S503x
MIFARE Classic 1K - Mainstream contactless smart card IC
8.7 Memory access
Before any memory operation can be carried out, the card has to be selected and
authenticated as described in
Section 8.2
. The possible memory operations for an
addressed block depend on the key used and the access conditions stored in the
associated sector trailer.
Table 4.
Operation
Read
Write
Increment
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 MF1S503x ensures that the commands are executed only after a
successful authentication.
Table 5.
Access Bits
C1
3
C2
3
C3
3
C1
2
C2
2
C3
2
Memory operations
Description
reads one memory block
writes one memory block
increments the contents of a block and
stores the result in the internal data
register
decrements the contents of a block and
stores the result in the internal data
register
writes the contents of the internal data
register to a block
reads the contents of a block into the
internal data register
Valid for Block Type
read/write, value and sector trailer
read/write, value and sector trailer
value
Decrement
value
Transfer
value
Restore
value
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
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