MLX90129 View Datasheet(PDF) - Melexis Microelectronic Systems
Part Name
Description
Manufacturer
MLX90129 Datasheet PDF : 60 Pages
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MLX90129
13.56MHZ SENSOR TAG / DATALOGGER IC
WRITE REGISTER FILE (A11F)
When receiving the Write register file request, the transponder shall write the requested block into Register File with the data
contained in the request and report the success of the operation in the response.
Request format:
S Flags
O 8 bits
F 00xx 001x
Write Register File
8 bits
1010 0001 0001 1111
UID
64 bits
(Optional)
Block address
8 bits
Data
16 bits
CRC 16 E
16 bits O
F
READ INTERNAL DEVICE (A21F)
When receiving the “Read Internal Device” request, the transponder shall read a word of the addressed internal device and send
back its value in the response. The internal device is selected thanks to the address byte taking part of the command frame.
Request format:
S Flags
Read Internal Device
UID
Block address CRC 16 E
O 8 bits
8 bits
64 bits
8 bits
16 bits O
F 00xx 001x 1010 0010 0001 1111 (Optional)
F
Response format (if no error):
S Flags
Data
CRC 16 E
O 8 bits
16 bits
16 bits O
F 0000 0000
F
WRITE INTERNAL DEVICE (A31F)
When receiving the “Write Internal Device” request, the transponder shall write the addressed internal device word. If the
address corresponds to the EE-Latches of the Internal Device (Internal Device #03 and #04) the RFID acknowledgment can be
missing or the RFID communication can be disabled depending the settings.
The MLX90129 has to be reset (power off) in order to take into account the modifications. The MLX90129 behaviour without
reset can not be guaranteed.
Request format:
S Flags
Write Internal Device UID
Block address Data
CRC 16 E
O 8 bits
8 bits
64 bits
8 bits
16 bits 16 bits O
F 00xx 001x 1010 0011 0001 1111 (Optional)
F
READ EXTERNAL MEMORY (A41F)
When receiving the “Read External Memory” request, the transponder shall read the requested block from external memory via
SPI and send back its value in the response.
Request format:
S Flags
O 8 bits
F 00xx 001x
Read External Memory
8 bits
1010 0100 0001 1111
UID
64 bits
(Optional)
Block address
16 bits
CRC 16 E
16 bits O
F
Response format (if no error):
S Flags
Data
CRC 16 E
O 8 bits
16 bits
16 bits O
F 0000 0000
F
REVISION 011 - JUNE 13, 2017
3901090129
Page 26 of 60
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