MAX66000K-000AA+【PDF 3/21 页】IC RFID UID 64BIT TYPE B KEY FOB

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ISO/IEC 14443 Type B-Compliant

64-Bit UID

MAX66000

COMMAND LEVEL:

NETWORK

FUNCTION COMMANDS

MEMORY FUNCTION

COMMANDS

AVAILABLE COMMANDS:

REQUEST (REQB)

WAKEUP (WUPB)

SLOT-MARKER

HALT (HLTB)

SELECT (ATTRIB)

DESELECT (DESELECT)

GET SYSTEM INFORMATION

GET UID

DATA FIELD AFFECTED:

AFI, ADMINISTRATIVE DATA

AFI, ADMINISTRATIVE DATA

(ADMINISTRATIVE DATA)

PUPI

PUPI, ADMINISTRATIVE DATA

(ADMINISTRATIVE DATA)

64-BIT UID, AFI, CONSTANTS

64-BIT UID

Figure 2. Hierarchical Structure of ISO/IEC 14443 Type B Protocol

MSb

LSb

64

E0h

57 56

2Bh

49 48

0h

45 44

FEATURE CODE (01h)

37 36

36-BIT IC SERIAL NUMBER

1

Figure 3. 64-Bit UID

LSb

MSb

1

0

START

BIT 1

BIT 2

BIT 3

BIT 4

BIT 5

BIT 6

BIT 7

BIT 8

STOP

Figure 4. ISO/IEC 14443 Data Character Format

Parasite Power

As a wireless device, the MAX66000 is not connected

to any power source. It gets the energy for operation

from the surrounding RF field, which needs to have a

minimum strength as specified in the Electrical

Characteristics table.

Unique Identification Number (UID)

Each MAX66000 contains a factory-programmed and

locked identification number that is 64 bits long

(Figure 3). The lower 36 bits are the serial number of the

chip. The next 8 bits store the device feature code,

which is 01h. Bits 45 to 48 are 0h. The code in bit loca-

tions 49 to 56 identifies the chip manufacturer according

to ISO/IEC 7816-6/AM1. This code is 2Bh for Maxim.

The code in the upper 8 bits is E0h. The UID is read

accessible through the Get UID and Get System

Information commands. The lower 32 bits of the UID are

transmitted in the PUPI field of the ATQB response to

the REQB, WUPB, or SLOT-MARKER command. The

upper 32 bits of the UID are factory programmed into

the application data field, which is transmitted as part of

the ATQB response. This way the master receives the

complete UID in the first response from the slave. See

the Network Function Commands section for details.

ISO/IEC 14443 Type B

Communication Concept

The communication between the master and the

MAX66000 (slave) is based on the exchange of data

packets. The master initiates every transaction; only

one side (master or slaves) transmits information at any

time. Data packets are composed of characters, which

always begin with a START bit and typically end with

one or more STOP bits (Figure 4). The least significant

data bit is transmitted first. Data characters have 8 bits.

Each data packet begins with a start-of-frame (SOF)

character and ends with an end-of-frame (EOF) charac-

ter. The EOF/SOF characters have 9 all-zero data bits

(Figure 5). The SOF has 2 STOP bits, after which data

characters are transmitted. A data packet with at least

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