MLX90313KDF ETC [List of Unclassifed Manufacturers], MLX90313KDF Datasheet - Page 16

• Manufacturer Part Number: MLX90313KDF
• Description: Programmable IR Sensor Interface
• Manufacturer: ETC [List of Unclassifed Manufacturers]

IRGAIN2 bit functions
Bit
RSEL[3:0]
TEMPGAIN
Read access: No. The data is accessible for read via SPI only from eeprom address 02h.
Write access: Directly to internal register in test mode. To EEprom if WP-register is correctly set.
TEMPGAIN bit functions
Bit
TRSEL[1:0]
IRSEL[2:0]
GCT[5:0]
CONFREG1
Read access: Directly from internal registers or EEprom.
Write access: Directly to internal register in test mode. To EEprom if WP-register is correctly set.
CONFREG1 bit functions
Bit
Fatal Error
ENVR
HVSUP
SELADREF
POTMET
COMP1V
COMP1P
BYPTEMP
REL1V
REL1P
EEWREN
TESTMODE
*control bits EEWREN and TESTMODE are write protected. Their values can be set only with writing the
appropriate data in ‘Test’ and ‘WP’ registers. These bits are flags which indicate the system operation
MLX90313 Programmable IR sensor Interface
3901090313
POR
X
X
X
POR
X
X
X
POR
X
X
1
X
X
X
X
X
X
X
0
0
val
100
101
0000-1111
val
00-11
000-111
000000-
111111
val
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
Function
Vref = 4V
Vref = 4.5V
Select the value of the analog ground for IR signal path.The bits are
5, RSEL4 is in LPF register (see ‘ADC’ part)
Function
Reference voltage for Tambient measurement at ADC interface
input.
Current mirror ratio: See under M in table ‘Temp chain gain settings’
in the section on the Temp-amplifier chain (analog features)
Temp-gain: See table ‘Temp-chain gain settings’ in the section on
the temp-amplifier chain (analog features)
Function
Flags Multiple eeprom failure. Hamming coding can detect and correct only one bit
per address. Bit will be cleared when going in test mode,disabling EEPROM
protection and returning in normal mode.( for diagnostics only)
Stops the internal reference for DAC (Pin VREF). The reference voltage can be
supplied externally. If ENDAC=0 then VREF is input.
Enable the regulator for battery supply. NOTE!!! After POR this regulator will be
always on. It can be stopped from EEPROM data.
External supply of ADC reference to AGND pin.
Enable the internal ADC reference (connected to AGND pin).
Sets threshold level for Rel1 to THRel1 in EEprom (address 75h)
Sets potentiometer input (pin IROUT) as threshold level
Sets Tobject as target voltage for comparator Comp1
Sets Tambient as target voltage for comparator Comp1
Sets polarity of Comp1: Inverting
Sets polarity of Comp1: Non-inverting
Output of Temp amplifier path is connected to ADC
Connects TINP-TINN directly to the ADC, bypassing the Temp-chain
Sets Tobject as target voltage for Rel1
Sets Tambient as target voltage for Rel1
Sets polarity of Rel1: Inverting
Sets polarity of Rel1: Non-inverting
Enables write access in EEPROM *write protect
Indicates chip is in test mode *write protect
Page 16
Programmable IR Sensor Interface
MLX90313
Rev 1.0 21-July-2001