EVB90320 Melexis Inc, EVB90320 Datasheet - Page 21

• Manufacturer Part Number: EVB90320
• Description: DEMO KIT MLX90320 SENS INTERFACE
• Manufacturer: Melexis Inc

Specifications of EVB90320

• Main Purpose: Interface, Automotive Sensors
• Embedded: Yes, Other
• Utilized Ic / Part: MLX90320
• Primary Attributes: USB or 12V Supply
• Secondary Attributes: Interface by USB and Serial Port
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Read the digital temperature value.
The ASSP is sending back the first byte, followed a few A s later by the second byte.
One must readout 10bits data from these two byte.
The first byte are the 8 MSB bits of the ADC. The two highest bits of the second byte are the LSB bits of the ADC.
Lock EEPROM
To avoid unwanted rewriting of the EEPROM content in the field, it is strongly recommended to lock the
EEPROM after calibration has been finished. For that purpose the ‘Lock EEPROM’ command can be
used. The customer cannot undo the ‘Lock EEPROM’ command. This can only be done by Melexis using
a special setup.
INM or INP connected to output
Test INP
Connect INP input pin to the output. This mode can be left only by resetting the chip.
Test INM
Connection INM input pin to the output. This mode can be left only by resetting the chip.
The chip stays in that mode until a reset is given. This can be used for failure analysis.
3901090320
Rev 004
COMIN
COMIN
COMIN
0
1
With communication one can select a mode where the INM or the INP signal is connected to the output.
1
0
0
0
1
0
0
0
1
1
0
0
STOP bit
( =0 )
min. = 200 us
MAX. = 5 ms
0
0
0
0
1
1
1
1
0
0
Page 21 of 32
1
0
0
0
1
1
0
0
STOP bit
( =0 )
Automotive small sensor interface
min. = 200 us
MAX. = 5 ms
STOP bit
( =0 )
STOP bit
( =0 )
50 us
0
50 us
1
1
0
1
Test Mode
0
Test Mode
MLX90320
1
1
eeprom is locked
Wait 10 ms until
Data Sheet
Mar/05