mlx90313 ETC-unknow, mlx90313 Datasheet - Page 27

• Manufacturer Part Number: mlx90313
• Description: Programmable Ir Sensor Interface
• Manufacturer: ETC-unknow

Comp1 circuitry setting
Control Bit
Setting
Note that the threshold for COMP1, is always in eeprom address 0x73.
Rel1 circuitry setting
Control Bit
Setting
After the temperature data is updated in TOUT and IROUT registers (the current Ta&To are calculated)
the main state machine will enable the comparator functions of the chip if one of them is enabled.
Threshold data for both outputs is stored in addresses 73h (for Comp1) and 74h (for Rel1) in eeprom.
MLX90313 Programmable IR sensor Interface
3901090313
IROUT
Comp1 source signal
COMP1V
0
1
address:73h
Rel1 source signal
REL1V
0
1
Linearised
Linearised
Threshold
T
T
ambient
object
4LSB 0000
ADC
8
12
12
Tobject
Tambient
Tobject
Tambient
address:75h
Comparator2 (REL1 pin) Configuration diagram
Linearised
Linearised
Threshold
Comparator1 (COMP1) Configuration diagram
COMP1V
IRDATA
2/1 MUX
register
T
T
12 bit
ambient
object
12
12
12
11+1
Rel1 Threshold source
POTMET
0
1
Comp1 Polarity
COMP1P
0
1
COMP1P
POTMET
2/1 MUX
2/1 MUX
11+1
REL1V
12
12 bit
12 bit
Page 27
Programmable IR Sensor Interface
[75h]
IRDATA [03h]
Inverting
Non-inverting
address:74h
comparator
Hysteresis
digital
12 bit
REL1P
12
12
Rel1 Polarity
REL1P
0
1
options
analog
address:76h
comparator
Hysteresis
digital
12 bit
MLX90313
Inverting
Non-inverting
Rev 1.0 21-July-2001
Tempout
REL1