SPUSI2/NOPB National Semiconductor, SPUSI2/NOPB Datasheet - Page 16

• Manufacturer Part Number: SPUSI2/NOPB
• Description: BOARD EVAL DATA CAPTURE BOARD
• Manufacturer: National Semiconductor

Specifications of SPUSI2/NOPB

• Main Purpose: Interface, Data Capture
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: WEBENCH® Sensor Designer Boards
• Primary Attributes: USB Interface Dongle II
• Secondary Attributes: SPI Interface
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SPUSI2

5.4 About.
hardware versions.
5.5 Exit.
by selecting this or by closing the window with the X in the right corner of the
windows application display panel.
brings up the following dialog:
configuration before exit. If the save option is selected, a Save File dialog is
opened to complete the process.
6 Some Reference Computations.
units using the provided channel properties. These computations contain all the
variables and work for all boards. Some boards have fixed values for specific
properties which may simply the computations.
6.1 Generic Computation steps.
and begin with the channel code which eventually maps to a physical channel
unit such as temperature or pressure. This is referred to as the sensorIn value.
The About selection displays a window with the current software and
The right most menu selection is Exit. The application may be terminated
The configuration script may require that the user confirm the exit which
The user may then choose to exit, cancel to exit, or to save the
The display computations map the ADC code values to desired channel
Code refers to the read sensor code value.
Vref is the ADC reference voltage in mV.
2^n is the ADC resolution where n is the number of ADC bits.
k is 1 or 2 for single-ended and differential amplifiers, respectively.
The gain is specific to the board and provided by the user.
The Level Shift is used to skew data.
Sensitivity is explained in a dedicated section of this document.
Rpy is the responsivity for relevant optical applications.
Rf and Rdevice are resistance values for relevant applications.
Variables such as Level Shift and refOffset are used to skew data.
milliConversion variables are using to multiply or divide by 1000
The differential board computations correspond to physical components
Figure 5-8: Exit Confirmation Dialog.