mlx90308cab ETC-unknow, mlx90308cab Datasheet - Page 13

• Manufacturer Part Number: mlx90308cab
• Description: Programmable Sensor Interface
• Manufacturer: ETC-unknow

Table 7. Alarm Source Bit Definition
Alarm Option
This option allows controlling the low and high limits
of the output (See Figure 5.). The output level is set
when the output tries to exceed the programmed
limits. Five bytes are reserved for this option. The
first byte is the low trigger limit and the second the
low output. The third and fourth bytes are used for
the high limit and the output. The fifth byte is the
alarm control, used to select the alarm input. The
different levels are programmed as eight bit
numbers. These correspond to the 8 upper bits of
the 10 bit signal measurement. When the alarm
mode is not used, all of the data is 0. The control
code is coded as shown in Table 7. The six possible
signals are listed below and are encoded on the 4
MSB’s of byte 31 of the EEPROM.
MLX902xx Name of Sensor
MLX90308CAB Programmable Sensor Interface
Output
Output
High
Low
Selected input
Figure 5.
Alarm Function
OUTPUT
GNO
VMO
TPO
IAO
IO1
IO2
Trigger
Low
Input Signal
MUX Value
MLX90308
Trigger
High
0010
0110
0000
0011
0100
0101
Rev Y.X
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Programmable Sensor Interface
IO1 & IO2
IO1 and IO2 are used in the alarm and level steering
modes. For custom firmware, they can be used for a
digital input, an analog input, or a digital output.
VBN
TMP
IO1
VBP
IO2
Bidirectional
Figure 6.
Alarm & Steering
Source Points
Figure 7. Level Steering
Function
IO1, IO2
(I02,I01)
OFC
Offset
& Amp
Temp
Sense
0 - 0
I/O
Level 1
IAO
FLT
0 - 1
TPO
22/Aug/98
MLX90308CAB
COMS
UART
ADC
DAC
&
Gain
Level 2
VDD1 FET VDD GND
Rev 3.0 21/May/01
GNO
1 - 0
Power Supply
Microcontroller
Core, Memory,
Regulation
Reset,Test,&
EEPROM
Oscillator
MLX90308
Level 3
CM
VM
1 -1
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CMO
VMO
TSTB
CMN