MT7686 And MT7682 HDK Power Measurement Guide

MT7686%20and%20MT7682_HDK_Power_Measurement_Guide

User Manual:

Open the PDF directly: View PDF PDF.
Page Count: 8

MT7686 and MT7682 HDK Power
Measurement Guide
Version: 1.1
Release date: 1 Aug 2017
© 2017 Airoha Technology Corp.
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s). Airoha cannot grant you
permission for any material that is owned by third parties. You may only use or reproduce this document if you have agreed to and been
bound by the applicable license agreement with Airoha (“License Agreement”) and been granted explicit permission within the License
Agreement (“Permitted User”). If you are not a Permitted User, please cease any access or use of this document immediately. Any
unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited. THIS DOCUMENT IS PROVIDED ON AN
“AS-IS” BASIS ONLY. AIROHA EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES OF ANY KIND AND SHALL IN NO EVENT BE LIABLE FOR ANY
CLAIMS RELATING TO OR ARISING OUT OF THIS DOCUMENT OR ANY USE OR INABILITY TO USE THEREOF. Specifications contained herein are
subject to change without notice.
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page i of iii
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
Document Revision History
Revision Date Description
1.0 30 June 2017 Initial release
1.1 1 Aug 2017 Added the support for MT7682 power measurement.
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page ii of iii
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
Table of Contents
1. Introduction ........................................................................................................................................... 1
2. Hardware Configuration ........................................................................................................................ 2
2.1. Connecting the power source............................................................................................................. 2
2.2. Measuring the power consumption ................................................................................................... 2
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page iii of iii
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
Lists of Tables and Figures
Figure 1. Front view of the MT7686 HDK ................................................................................................................ 1
Figure 2. Power source connection ......................................................................................................................... 2
Figure 3. Power domain of the chip (J2004) and RTC (J2007) ................................................................................. 3
Figure 4. Example measurement of the RTC current .............................................................................................. 4
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page 1 of 4
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
1. Introduction
MT7686 and MT7682 HDKs provides a low quiescent current development platform to design, prototype, evaluate
and implement Internet of Things (IoT) applications. This document guides you on how to measure the MT7686
HDK's power consumption. MT7686 and MT7682 HDKs include a main board and a stamp module. The HDKs use
the same main board, the difference is in the stamp module.
The front view of the MT7686 HDK is shown in Figure 1.
Figure 1. Front view of the MT7686 HDK
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page 2 of 4
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
2. Hardware Configuration
2.1. Connecting the power source
Power supply for the MT7686 HDK is provided either through a micro-USB cable or 2xAA battery. Before
connecting the power source, consider the following:
1) Using a micro–USB cable
a) Jumper J2012 should be short.
b) Jumpers J2002 & J2003 should be short at pin 1 and pin 2 (see Figure 2).
2) Using 2xAA battery.
a) Verify the direction of the electrode (J2001) on the HDK (see Figure 2).
b) Jumper J2009 should be short.
c) Jumpers J2002 and J2003 should be short at pin 2 and pin 3.
Figure 2. Power source connection
2.2. Measuring the power consumption
The power consumption is measured at 3V3 power domain and for the real-time clock (RTC), as shown in Figure 3.
Remove the corresponding jumper, either J2004 (for the chip power domain) or J2007 (for RTC) and attach a
current meter. A typical current meter is shown in Figure 4 that measures RTC current.
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page 3 of 4
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
Note, that before measuring the current consumption, remove the jumpers J2201, J3002 and J3003. These
jumpers are used for download or debug purposes and might add extra current consumption on chip domain.
Figure 3. Power domain of the chip (J2004) and RTC (J2007)
MT7686 and MT7682 HDK Power
Measurement Guide
© 2017 Airoha Technology Corp.
Page 4 of 4
This document contains information that is proprietary to Airoha Technology Corp. (“Airoha”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.
Figure 4. Example measurement of the RTC current

Navigation menu