OPT3101EVM Hardware
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8
SBAU309A–February 2018–Revised June 2018
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Copyright © 2018, Texas Instruments Incorporated
OPT3101 Evaluation Module
3.5 Other Components
The following components are also used on the PCB:
• The LDO creates a 3.3-V supply, which powers both the MSP430 and the OPT3101.
• The programming switch puts the EVM in bootloader mode. This works by holding down the switch
during power up. This allows firmware to be flashed to the device.
CAUTION
Flashing new firmware to the EVM erases the calibration stored on the EVM.
Never do this unless a firmware update is required, and if this is the case make
sure to read the calibration out of the MSP430 flash and create a backup
before flashing the new firmware.
• The indicator LED is an RGB multi-color LED, which is used by the MSP430 firmware to provide visual
feedback. Currently the LED only glows green to signal that the device has firmware and is powered
on. However, the firmware supports using different colors to indicate other functions.
• The micro USB port allows the device to be plugged into a computer using a micro USB cable. The
device is powered off the 5-V supply from the USB.
• TVS diode array connected to all signals routed to the header pins and the USB. This helps with ESD
protection.
• The crystal oscillator provides a 4-MHz clock for the MSP430.
4 Software Installation
4.1 Minimum Requirements
Before installing the software, verify that your PC meets the minimum requirements outlined in this
section.
4.1.1 Required Setup for OPT3101EVM GUI Software
• A PC running Microsoft
®
Windows
®
7 or Windows 10 operating system with at least 325MB of free
space
• A display with screen resolution of 1200×720 pixels, or greater
4.1.2 Additional Requirements for use With Hardware
The following additional items are required:
• OPT3101EVM
• USB to MicroUSB cable (provided in kit)
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