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MAX66140K-000AA+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
MAX66140
Error Indication
Depending on the complexity of a function, various error conditions can occur. In case of an error, the response to a
request begins with a response flags byte 01h followed by one 1-byte error code.
Table 6 shows a matrix of commands and potential errors. If there was no error, the response begins with a
response flags byte 00h followed by command-specific data, as specified in the detailed command description.
If the MAX66140 does not recognize a command, it does not generate a response.
ISO 15693-Compliant Secure Memory
18 ______________________________________________________________________________________
ABRIDGED DATA SHEET
Table 6. Error Code Matrix
Refer to the full data sheet for this information.
Detailed Command Descriptions
In the request data graphics of this section, the UID field is shaded to indicate that the inclusion of the UID depends
on the address mode.
Get System Information
This command allows the master to retrieve technical information about the MAX66140. The IC reference code indi-
cates the die revision in hexadecimal format, such as A1h, A2h, B1h, etc.
Request Data for the Get System Information Command
Response Data for the Get System Information Command (No Error)
For additional command descriptions, refer to the full data sheet.
MAX66140
ISO 15693-Compliant Secure Memory
______________________________________________________________________________________ 19
REQUEST FLAGS COMMAND UID
(1 Byte) 2Bh (8 Bytes)
RESPONSE
FLAGS
INFO
FLAGS
UID DSFID AFI
NUMBER OF
BLOCKS
MEMORY BLOCK
SIZE
IC REFERENCE
00h 0Fh (8 Bytes) (1 Byte) (1 Byte) 13h 07h (1 Byte)
ABRIDGED DATA SHEET
CRC Generation
The MAX66140 uses two different types of CRCs. One
CRC is an 8-bit type. The equivalent polynomial func-
tion of this CRC is X
8
+ X
5
+ X
4
+ 1.
The other CRC is a 16-bit type, generated according to
the CRC-16-CCITT polynomial function (see Figure 18)
X
16
+ X
12
+ X
5
+ 1. This CRC is used for error detec-
tion in request and response data packets and is
always communicated in the inverted form. After all
data bytes are shifted into the CRC generator, the state
of the 16 flip-flops is parallel-copied to a shift register
and shifted out for transmission with the LSb first. For
more details on this CRC, refer to ISO/IEC 15693-3,
Annex C.
MAX66140
ISO 15693-Compliant Secure Memory
______________________________________________________________________________________ 29
ABRIDGED DATA SHEET
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

MAX66140K-000AA+

Mfr. #:
Buy MAX66140K-000AA+
Manufacturer:
Maxim Integrated
Description:
RFID Transponders RFID FOB 15693 ID 1K SECURE LF
Lifecycle:
New from this manufacturer.
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