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
Response error code
If the flag Error_flag of the response is set by the MLX90129, the error code is transmitted to provide some information about
the error that occurred. Most of them are described in the standard ISO15693. The last ones are some custom codes.
Error
code
01
02
03
0F
10
11
12
A0
A1
Meaning
The command is not supported, i.e. the request code is not recognized
The command is not recognized, for example: a format error occurred
The option is not supported
Unknown error
The specified block is not available (does not exist)
The specified block is already locked and thus cannot be locked again
The specified block is locked and its content cannot be changed
The selected Device is locked
The selected Device is busy (*)
A2 The access to the selected Device is denied
Command
All
All
All
All
Read/Write/Lock
Lock
Write
Write memory
Read/Write
memory
Read/Write
memory
(*) “Device is busy” error code occurring during a write operation means that the MLX90129 is still performing the last write
operation. Then, the base-station has to wait for some time and send the command again. For read operation, it means that the
selected Internal device (sensor ADC,…) cannot read the data and respond immediately.
The purpose of the address #11 in EEPROM is user-defined.
8.1.3. RFID interruptions
The Internal device domain contains registers with MLX90129 status information. It can be accessed with the command Read
Internal Device.
The following words are part of the Internal Device domain:
The RFID core control word is read/write. It contains a bit used to lock the non-RFID transactions.
The RFID interrupt & status word is read-only. it contains the status of the security units, of the pending accesses to the
memories, and of the system current activity.
RFID core control word (Devices address domain, address #00, read/write)
Bits Name
Description (if bit=1)
#00 – RFID core control word
15:1 -
Unused (must be 0)
0 Core_Lock When set to ‘1’, it locks any transactions managed by the DMA. This allows having an access
from RFID to any device at any time. If base station sets this bit into one, but last transaction
inside core is not yet accomplished, this transaction is not interrupted. This signal doesn’t
block SPI. Priority of this signal is less then priority of such signal in SPI control word, more
over SPI can block affection of this signal (via RFID security map configuration register).
REVISION 011 - JUNE 13, 2017
3901090129
Page 29 of 60
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