SI1140DK Silicon Laboratories Inc, SI1140DK Datasheet - Page 5

• Manufacturer Part Number: SI1140DK
• Description: BOARD EVAL SI1143-A10-GM
• Manufacturer: Silicon Laboratories Inc
• Series: QuickSense™r

Specifications of SI1140DK

• Sensor Type: Proximity, Infrared and Ambient Light
• Interface: USB
• Voltage - Supply: 5V, USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: C8051F800, Si1143
• Data Bus Width: 8 bit
• Interface Type: USB
• Operating Voltage: 5 V
• For Use With/related Products: Si1140
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 336-1971

4.1. Channel Selection
Selecting which channels to display is done by checking the appropriate boxes on the Board Representation
window, shown in Figure 4, and the Generic Data window, shown in Figure 5. There are two different groups of
measurements available from the example firmware: raw data channels and generic data channels.
4.1.1. Raw Data Channels
The raw data measurements can be seen by selecting the channels from the Board Representation window, shown
in Figure 4. The two types of raw data measurements are ambient light and infrared proximity.
1. Raw ambient light measurements. The ambient light channels are Channel 0 (red) and Channel 1(blue).
2. Raw infrared proximity measurements. The infrared proximity channels are Channel 2 (pink) readings using
Channel 0 displays measurements of the ambient visible light while Channel 1 displays measurements of the
ambient infrared light.
DS1, Channel 3 (green) readings using DS9, and Channel 4 (yellow) readings using DS5. The output is
proportional to the amount of infrared light being reflected onto the part by an object above the board. These
outputs are 16-bit unsigned values.
Figure 4. Raw Data Channel Selection
Rev. 0.2
Si1140-DK
5