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參數(shù)資料
| 型號： | DK90314 |
| 英文描述： | DK90314 Demo Kit for MLX90314 |
| 中文描述： | DK90314演示套件MLX90314 |
| 文件頁數(shù)： | 9/21頁 |
| 文件大?。?/td> | 391K |
| 代理商： | DK90314 |
This box selects the external temperature sensor for temperature compensating the sensor. The
external temperature sensor is mutually exclusive with the internal temperature sensor.
Checksum Test
This box enables the Checksum Test to ensure the integrity of the contents of the EEPROM.
When enabled the checksum is calculated during a reset, either power-up or a soft reset. The
sum of all of the EEPROM locations should be 0FFh for the test to pass. Location 47 in
EEPROM is reserved as the checksum location. This location is set by the software to a value
that forces the sum to 0FFh. The software will calculate and use this value whether or not the
test is enabled. The software updates the checksum whenever the Upload EEPROM button is
used. If the test detects a failure, the output is forced to a value defined by the user, ‘Checksum
Error Output’. The chip will regain normal function when the correct checksum is calculated.
3.2) General Signal Control
The center of the dialog box contains data and control that is needed to control the sensor’s
signal for both analog and digital modes as well as for voltage and current outputs. The diagram
below, figure 6, illustrates the signal path within the sensor interface.
BRIDGE
SENSOR
OFFSET
GAIN
SENSOR
2 Bit DAC
Coarse Offset
10 Bit DAC
Fine Offset
10 Bit DAC
Fine Gain
2 Bit DAC
Coarse Gain
1 Bit DAC
Coarse Gain
ADC
8 Bit
RISC
Microcontroller
10 Bit ADC
2 Bit DAC
Temp Gain
& Offset
Internal
Temperature
Sensor
Input for
External
Temperature
Sensor
TMP
DAC
Analog/
Digital
OFC
FLT
COMS
VOLTAGE
CMO
CURRENT
CMN
VBP
VBN
TSTB
Regulator
GND
VDD
VDD1
FET
Invert
VMO
IO1
IO2
GNO
IAO
TPO
MLX90308CCC & MLX90314AB Software Users Manual
Rev 2.0
9
11/28/01
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