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ABRIDGED DATA SHEET
ISO/IEC 14443 Type B-Compliant
Secure Memory
MAX66040
COMMAND LEVEL:
NETWORK
FUNCTION COMMANDS
AVAILABLE COMMANDS:
REQUEST (REQB)
WAKEUP (WUPB)
SLOT-MARKER
HALT (HLTB)
SELECT (ATTRIB)
DESELECT (DESELECT)
GET SYSTEM INFORMATION
DATA FIELD AFFECTED:
AFI, ADMINISTRATIVE DATA
AFI, ADMINISTRATIVE DATA
(ADMINISTRATIVE DATA)
PUPI
PUPI, ADMINISTRATIVE DATA
(ADMINISTRATIVE DATA)
64-BIT UID, AFI, CONSTANTS
MEMORY AND CONTROL
FUNCTION COMMANDS
Refer to the full data sheet.
GET UID
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 (03h)
37 36
36-BIT IC SERIAL NUMBER
1
Figure 3. 64-Bit UID
Unique Identification Number (UID)
Each MAX66040 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 03h. Bits 45 to 48 are 0h. The code in bit loca-
tions 49 to 56 identifies the chip manufacturer, accord-
ing 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. By
default, the upper 32 bits of the UID are factory pro-
grammed into the application data field, which is trans-
mitted 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.
Detailed Memory Description
Refer to the full data sheet for this information.
4
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