MF1S5009 查看數據表（PDF） - NXP Semiconductors.
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MF1S5009
NXP Semiconductors.
MF1S5009 Datasheet PDF : 32 Pages
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NXP Semiconductors
MF1S5009
Mainstream contactless smart card IC
9.6.3 Sector trailer (block 3)
Each sector has a sector trailer containing the
• secret keys A and B (optional), which return logical “0”s when read and
• the access conditions for the four blocks of that sector, which are stored in bytes 6...9.
The access bits also specify the type (read/write or value) of the data blocks.
If key B is not needed, the last 6 bytes of block 3 can be used as data bytes.
Byte 9 of the sector trailer is available for user data. For this byte the same access rights
as for byte 6, 7 and 8 apply.
All keys are set to FFFFFFFFFFFFh at chip delivery.
Byte Number
Description
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Key A
Access Bits
Key B (optional)
001aam206
Fig 9. Sector trailer
9.7 Memory access
Before any memory operation can be carried out, the card has to be selected and
authenticated as described previously. 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. Memory operations
Operation
Description
Read
reads one memory block
Write
writes one memory block
Increment
increments the contents of a block and
stores the result in the internal data
register
Decrement
decrements the contents of a block and
stores the result in the internal data
register
Transfer
writes the contents of the internal data
register to a block
Restore
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
value
value
value
MF1S5009
Product data sheet
PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 27 July 2010
189131
© NXP B.V. 2010. All rights reserved.
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