User's Guide
Table Of Contents
- CC3235MODSF SimpleLink™ Wi-Fi® and IoT Solution With MCU LaunchPad™ Hardware
- Table of Contents
- 1 Introduction
- 2 Hardware
- 2.1 Block Diagram
- 2.2 Hardware Features
- 2.2.1 Key Benefits
- 2.2.2 XDS110-Based Onboard Debug Probe
- 2.2.3 Debug Probe Connection: Isolation Jumper Block
- 2.2.4 Application (or "Backchannel") UART
- 2.2.5 JTAG Headers
- 2.2.6 Using the XDS110 Debug Probe with a Different Target
- 2.2.7 Power Connections
- 2.2.8 Reset Pullup Jumper
- 2.2.9 Clocking
- 2.2.10 I2C Connection
- 2.2.11 Sense on Power (SOP)
- 2.2.12 Push-Buttons and LED Indicators
- 2.3 Electrical Characteristics
- 2.4 Antenna Characteristics
- 2.5 BoosterPack™ Plug-in Module Pinout
- 3 Layout Guidelines
- 4 Operational Setup and Testing
- 5 Development Environment Requirements
- 6 Additional Resources
- 7 Assembly Drawing and Schematics
- Appendix A Manual Information to the End User
- Revision History
- Important Notice
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Operational Setup and Testing
39
SWRU548A–February 2019–Revised August 2019
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Copyright © 2019, Texas Instruments Incorporated
CC3235MODSF LaunchPad™ Development Kit (LAUNCHCC3235MOD)
4.1.2 Active Current Measurements
See the following instructions to measure active power.
1. Remove the VBAT jumper (J18) as shown in Figure 27.
2. Solder a 0.1-Ω resistor on a wire which can be connected to a voltmeter/oscilloscope. Or, attach a
jumper across J18 so that it can be used with a current probe.
3. Measure the voltage across the resistor using an oscilloscope with a differential probe. For the current
probe, coil the wire around the sensor several times for good sensitivity.
• An ammeter can also be used for this measurement, but the results may be erroneous due to the
switching nature of the current. See the "Power Measurement Guide" in CC3135, CC3235x
SimpleLink™ Wi-Fi® Internet-on-a chip™ Networking Subsystem Power Management for more
current consumption measurement techniques.
Figure 27. Active Current Measurement