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 EXTERNAL MEMORY (A51F)
When receiving the “Write external memory” request, the transponder shall send a command to SPI, in order to write a byte into
an external memory via SPI interface with the data contained in the request.
Request format:
S Flags
Write External Memory UID
Block address Data
CRC 16 E
O 8 bits
8 bits
64 bits
16 bits
16 bits 16 bits O
F 00xx 001x 1010 0101 0001 1111
(Optional)
F
SEND A SPECIFIC COMMAND TO EXTERNAL MEMORY (A61F)
When receiving the “Send Specific Command to external memory” request, the transponder shall send a command to the
external memory via SPI. Example: WREN = Write Enable, Write Disable.
Request format:
S Flags
Send Specific CMD
UID
Command code CRC 16 E
O 8 bits
8 bits
64 bits
8 bits
16 bits O
F 00xx 001x 1010 0110 0001 1111
(Optional)
F
SEND ADDRESSED COMMAND TO EXTERNAL MEMORY (A71F)
When receiving the “Send Addressed Command to an external memory” request, the transponder shall send a command and the
address to the external memory via SPI. Example: Lock Block, Unlock Block
Request format:
S Flags
O 8 bits
F 00xx 001x
Send Addressed CMD
8 bits
1010 0111 0001 1111
UID
Address Command code CRC 16 E
64 bits
16 bits
8 bits
16 bits O
(Optional)
F
WRITE EXTERNAL MEMORY STATUS (A81F)
When receiving the “Write external memory status” request, the transponder shall send specified command with data to the
external memory via SPI. Example: write status register.
Request format:
S Flags
O
F 8 bits
00xx 001x
Write External Memory
Status
8 bits
1010 1000 0001 1111
UID
64 bits
(Optional)
Command Code
8 bits
Data
8 bits
CRC 16 E
O
16 bits F
READ EXTERNAL MEMORY STATUS (A91F)
When receiving the “Read external memory status” request, the transponder shall send specified command to the external
memory via SPI and respond with data received from external SPI slave.
Request format:
S Flags
O 8 bits
F 00xx 001x
Read External Memory status
8 bits
1010 1001 0001 1111
UID
Command code CRC 16 E
64 bits
8 bits
16 bits O
(Optional)
F
Response format (if no error):
S Flags
Data
CRC 16 E
O 8 bits
8 bits
16 bits O
F 0000 0000
F
REVISION 011 - JUNE 13, 2017
3901090129
Page 27 of 60
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