CLRC63201T/0FE,112 NXP Semiconductors, CLRC63201T/0FE,112 Datasheet - Page 18

• Manufacturer Part Number: CLRC63201T/0FE,112
• Description: IC I.CODE HS READER 32-SOIC
• Manufacturer: NXP Semiconductors
• Series: I-Coder

Specifications of CLRC63201T/0FE,112

• Rf Type: Read Only
• Frequency: 13.56MHz
• Features: ISO14443-A, ISO14443-B, ISO15693, ISO18000-3
• Package / Case: 32-SOIC (0.300", 7.50mm Width)
• Product: RFID Readers
• Operating Temperature Range: - 25 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-2199-5; 935269690112; CLRC632; CLRC63201TD

NXP Semiconductors
CLRC632_35
Product data sheet
PUBLIC
Fig 7.
Master key byte
Master key bits
EEPROM byte
Example
address
Key storage format
9.2.3.1 Key format
9.2.3.2 Storage of keys in the EEPROM
9.2.3 Crypto1 keys (write only)
k7 k6 k5 k4 k7 k6 k5 k4
5Ah
MIFARE security requires specific cryptographic keys to encrypt data stream
communication on the contactless interface. These keys are called Crypto1 keys.
Keys stored in the EEPROM are written in a specific format. Each key byte must be split
into lower four bits k0 to k3 (lower nibble) and the higher four bits k4 to k7 (higher nibble).
Each nibble is stored twice in one byte and one of the two nibbles is bit-wise inverted. This
format is a precondition for successful execution of the LoadKeyE2 (see
page
Using this format, 12 bytes of EEPROM memory are needed to store a 6-byte key. This is
shown in
Example: The value for the key must be written to the EEPROM.
Remark: It is possible to load data for other key formats into the EEPROM key storage
location. However, it is not possible to validate card authentication with data which will
cause the LoadKeyE2 command (see
The CLRC632 reserves 384 bytes of memory in the EEPROM for the Crypto1 keys. No
memory segmentation is used to mirror the 12-byte structure of key storage. Thus, every
byte of the dedicated memory area can be the start of a key.
Example: If the key loading cycle starts at the last byte address of an EEPROM block, (for
example, key byte 0 is stored at 12Fh), the next bytes are stored in the next EEPROM
block, for example, key byte 1 is stored at 130h, byte 2 at 131h up to byte 11 at 13Ah.
Based on the 384 bytes of memory and a single key needing 12 bytes, then up to 32
different keys can be stored in the EEPROM.
Remark: It is not possible to load a key exceeding the EEPROM byte location 1FFh.
n
•
•
If the key was: A0h A1h A2h A3h A4h A5h then
5Ah F0h 5Ah E1h 5Ah D2h 5Ah C3h 5Ah B4h 5Ah A5h would be written.
97) and LoadKey commands (see
0 (LSB)
k3 k2 k1 k0 k3 k2 k1 k0
Figure
n + 1
F0h
7.
Rev. 3.5 — 10 November 2009
k7 k6 k5 k4 k7 k6 k5 k4
Multiple protocol contactless reader IC (MIFARE/I-CODE1)
n + 2
5Ah
073935
1
k3 k2 k1 k0 k3 k2 k1 k0
Section 11.7.1 on page
Section 11.7.2 on page
n + 3
E1h
k7 k6 k5 k4 k7 k6 k5 k4
n + 10
5Ah
97) to fail.
97).
5 (MSB)
CLRC632
k3 k2 k1 k0 k3 k2 k1 k0
© NXP B.V. 2009. All rights reserved.
Section 11.7.1 on
n + 11
A5h
001aak640
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