DVK90129 Melexis Inc, DVK90129 Datasheet - Page 8

• Manufacturer Part Number: DVK90129
• Description: DEVELOPMENT KIT MLX90129
• Manufacturer: Melexis Inc
• Series: -r
• Type: Development kitr

Specifications of DVK90129

• Contents: Board, Proxima RF™ Desktop Reader
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MLX90129

The “Datalogger Application” tab is comprised of two sub tabs which allow configuration of datalogger
parameters and provides a read-out of datalogging results.
The configuration tab defines all the parameters for a datalogging application. First, select the data to be
saved (sensor 0, sensor 1, sensor 2 and timestamp).
For each sensor used during the datalogging, take care to note the threshold parameters available in the
tab “Sensor configuration”. If no threshold conditions are used, the three conditions have to be ticked as
shown in the following picture:
The destination of the data (sensors, values and timestamp) can be either to the MLX90129 internal
memory or to optional SPI external memory. In both cases, the start address (hexadecimal value), the
number of data (decimal value) and the period of measurement must be provided. The required memory
area is calculated and provided (hexadecimal value).
When using the internal memory, the start address is 0x29 in order to prevent overwriting the
configuration data. Choose the clock source for the period, either the MLX90129 embedded oscillator
(LFO) or the external oscillator (XLFO).
When using the external memory, fill in the communication parameters in “External Memory
Configuration” or click on the “EVB90129 External memory” button to apply the recommended settings for
the external memory of the EVB90129.
There are several options for datalogging:
There are two options to start data acquisition:
390129012902
Rev 001
The setting “enable stand by mode once ended” allows the unit to go into stand by mode (lowest
power consumption) after completion of the datalogging cycle.
The option “enable data logging loop” automatically restarts the data logging cycle, overwriting the
previous data.
The “disable automatic loading” option is linked to bit 7 of the internal device #03 (cf datasheet).
The option “As soon as the MLX90129 is powered” means bit 2 of the EEPROM#10 “automatic
logging mode enable” is set to ‘1’. This means that as soon as the MLX90129 is powered, the
configuration is loaded into the register file and the datalogging application starts.
The option “By RFID command” means bit 2 of the EEPROM#10 “automatic logging mode
enabled” is set to ‘0’. This means that even if the MLX90129 is powered, the datalogging
application does not start. To start it, it is necessary to set this bit to 1 in the Register File #10.
This command is sent by pressing the button “start datalogging” in the “Application” tab.
4.4. Datalogger Application
4.4.1. Datalogger configuration
Page 8 of 16
DVK90129
User Manual
April 2010