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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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MF1S5009DA4 Datenblatt(PDF) 13 Page - NXP Semiconductors |
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MF1S5009DA4 Datenblatt(HTML) 13 Page - NXP Semiconductors |
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13 / 32 page  MF1S5009 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet PUBLIC Rev. 3 — 27 July 2010 189131 13 of 32 NXP Semiconductors MF1S5009 Mainstream contactless smart card IC 9.7.1 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 irreversible blocked. Remark: In the following description the access bits are mentioned in the non-inverted mode only. The internal logic of the MF1S5009 ensures that the commands are executed only after an authentication procedure or never. Table 5. Access conditions Access Bits Valid Commands Block Description C13 C23 C33 read, write → 3 sector trailer C12 C22 C32 read, write, increment, decrement, transfer, restore → 2 data block C11 C21 C31 read, write, increment, decrement, transfer, restore → 1 data block C10 C20 C30 read, write, increment, decrement, transfer, restore → 0 data block Fig 10. Access conditions 001aam207 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Byte Number 0 Key A Key B (optional) Access Bits Byte 6 C23 C22 C21 C20 C13 C12 C11 C10 7 Bit 6543210 Byte 7 C13 C12 C11 C10 C33 C32 C31 C30 Byte 8 C33 C32 C31 C30 C23 C22 C21 C20 Byte 9 |
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