MLX90320LFRLFR MELEXIS [Melexis Microelectronic Systems], MLX90320LFRLFR Datasheet - Page 20

• Manufacturer Part Number: MLX90320LFRLFR
• Description: Automotive small sensor interface
• Manufacturer: MELEXIS [Melexis Microelectronic Systems]

COMIN
COMIN
COMO
COMO
COMIN
6.5.4 Commands
All delays mentioned below are calculated for a typical clock-frequency of 4 MHz.
The clock frequency can differ +/- 15% on each chip. The delays will vary proportionally.
Stop communication mode
Stop the communication, ASSP goes back into normal mode.
A new communication request is needed to get back into communication mode.
Reply A5
Command to see whether or not the ASSP is still in communication mode.
If so, the ASSP shall respond $A5.
Write to EEPROM
Write to a specific address. The address in the EEPROM is coded with 8 bits. As the EEPROM has 64 addresses
the two first address bits should be 0. The data to store in one EEPROM address is coded with 8 bits. As each
EEPROM address stores 4 calibration data bits and one parity bit, the 3 first data bits from the data byte should
be 0.
Read from EEPROM
Read a specific address. The address in the EEPROM is coded with 8 bits. As the EEPROM has 64 addresses
the two first address bits should be 0. A data byte is returned when reading the data from one EEPROM address
but actually it contains four calibration data bits and one parity bit. So the 3 first bits read from an EEPROM
address should be 0.
Read ADC value of the temperature.
3901090320
Rev 004
Minimum
COMIN
COMO
0
0
COMIN
0
Data sent by the MLX90320
1
0
0
0
0
0
Period Length (µs)
0
1
1
0
0
0
0
1
Typical
1
0
0
0
510
0
0
0
0
0
0
1
0
0
0
STOP bit
STOP bit
( =0 )
( =0 )
Maximum
STOP bit
( =0 )
min. = 120 us
MAX. = 5 ms
min. = 200 us
MAX. = 5 ms
0
min. = 150 us
MAX. = 5 ms
695
0
0
Address
0
0
Address
Minimum
0
Data received by the MLX90320
1250
STOP bit
( =0 )
0
STOP bit
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( =0 )
100 us
70 us
Period Length (µs)
STOP bit
( =0 )
0
1
Typical
MAX. = 10 ms
min. = 4,8 ms
1700
0
0
Automotive small sensor interface
1
Data
Data
Maximum
0
0
2250
Data
0
STOP bit
( =0 )
1
STOP bit
STOP bit
( =0 )
( =0 )
STOP bit
( =0 )
min. = 130 us
50 us
min. = 120 us
MAX. = 5 ms
MAX. = 5 ms
min. = 18 ms
0
MLX90320
1
STOP bit
( =0 )
min. = 150 us
MAX. = 5 ms
Next command
Next command
Next command
Data Sheet
Mar/05
Normal Mode
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