MF1PLUSX0Y1_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product short data sheet
PUBLIC
Rev. 3.2 — 21 February 2011
163532 8 of 20
NXP Semiconductors
MF1PLUSx0y1
Mainstream contactless smart card IC
8.1.6 Originality function
The originality function is implemented by an AES authentication with the originality key.
The authentication is performed in ISO/IEC 14443-4 protocol layer.
8.2 Card activation and communication protocol
The ISO/IEC 14443-3 anticollision mechanism allows for simultaneous handling of
multiple PICCs in the field. The anticollision algorithm selects each PICC individually and
ensures that execution of a transaction with a selected PICC is performed correctly
without data corruption from other PICCs in the field.
There are three different versions of the PICC. The UID is programmed into a locked part
of the NV-memory reserved for the manufacturer:
• unique 7-byte serial number
• unique 4-byte serial number
• non-unique 4-byte serial number
Due to security and system requirements, these bytes are write-protected after being
programmed by the PICC manufacturer at production.
Remark: The programmed 4-byte NUID serial number is not globally unique which has to
be considered in the contactless system design. See Ref. 11
for further information
regarding handling of UIDs.
The customer must decide which UID length to use when ordering the product, see
Table 2
for ordering information.
During personalization, the PICC can be configured to support Random ID in security
level 3. The user can configure whether Random ID or fixed UID shall be used. According
to ISO/IEC 14443-3 the first anticollision loop (see Ref. 5
) returns the Random Number
Tag 08h, the 3-byte Random Number and the BCC, if Random ID is used. The retrieval of
the UID in this case can be done using the Virtual Card Support Last command, see
Ref. 3
or by reading out block 0.
8.2.1 Backwards compatibility protocol
The backwards compatibility of this product, as used in security level 1 and security
level 2, runs on the same protocol layer as MIFARE Classic 1K and MIFARE Classic 4K.
The protocol is formed out of the following components:
• Frame definition: according to ISO/IEC 14443-3
• Bit encoding: according to ISO/IEC 14443-2
• Error code handling: handling is proprietary as error codes are formatted in half bytes.
• Command specification: commands are proprietary. Please use the specification as in
Ref. 1
and Ref. 2 and the additional commands which are only implemented in
MIFARE Plus as described in this document and in Ref. 3
.
The following security levels can run on this protocol:
• Security Level 0
• Security Level 1
