參數(shù)資料
型號(hào)： MF1S5037DUG
廠商： NXP Semiconductors N.V.
元件分類(lèi)： 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)： 7/37頁(yè)
文件大?。?/td> 425K
代理商： MF1S5037DUG
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
7 of 37
NXP Semiconductors
MF1S503x
MIFARE Classic 1K - Mainstream contactless smart card IC
8.2.5
Memory operations
After authentication any of the following operations may be performed:
Read block
Write block
Decrement: Decrements the contents of a block and stores the result in an internal
data-register
Increment: Increments the contents of a block and stores the result in an internal
data-register
Restore: Moves the contents of a block into an internal data-register
Transfer: Writes the contents of the temporary internal data-register to a value block
8.3 Data integrity
Following mechanisms are implemented in the contactless communication link between
reader and card to ensure very reliable data transmission:
16 bits CRC per block
Parity bits for each byte
Bit count checking
Bit coding to distinguish between “1”, “0” and “no information”
Channel monitoring (protocol sequence and bit stream analysis)
8.4 Three pass authentication sequence
1. The reader specifies the sector to be accessed and chooses key A or B.
2. The card reads the secret key and the access conditions from the sector trailer. Then
the card sends a random number as the challenge to the reader (pass one).
3. The reader calculates the response using the secret key and additional input. The
response, together with a random challenge from the reader, is then transmitted to the
card (pass two).
4. The card verifies the response of the reader by comparing it with its own challenge
and then it calculates the response to the challenge and transmits it (pass three).
5. The reader verifies the response of the card by comparing it to its own challenge.
After transmission of the first random challenge the communication between card and
reader is encrypted.
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