MT7686 And MT7682 HDK Power Measurement Guide
MT7686%20and%20MT7682_HDK_Power_Measurement_Guide
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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 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. © 2017 Airoha Technology Corp. 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. Page i of iii MT7686 and MT7682 HDK Power Measurement Guide Table of Contents 1. Introduction........................................................................................................................................... 1 2. Hardware Configuration ........................................................................................................................ 2 2.1. 2.2. Connecting the power source............................................................................................................. 2 Measuring the power consumption ................................................................................................... 2 © 2017 Airoha Technology Corp. 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. Page ii of iii MT7686 and MT7682 HDK Power Measurement Guide 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 © 2017 Airoha Technology Corp. 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. Page iii of iii MT7686 and MT7682 HDK Power Measurement Guide 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 © 2017 Airoha Technology Corp. 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. Page 1 of 4 MT7686 and MT7682 HDK Power Measurement Guide 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. © 2017 Airoha Technology Corp. 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. Page 2 of 4 MT7686 and MT7682 HDK Power Measurement Guide 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) © 2017 Airoha Technology Corp. 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. Page 3 of 4 MT7686 and MT7682 HDK Power Measurement Guide Figure 4. Example measurement of the RTC current © 2017 Airoha Technology Corp. 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. Page 4 of 4
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