i.MX 8M Mini Power Consumption Measurement.pdf
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© 2019 NXP B.V.
i.MX 8M Mini Power Consumption
Measurement
1. Introduction
This application note helps you to design power
management systems. It illustrates the current drain
measurements of the i.MX 8M Mini application
processors taken on the NXP EVK platform through
several use cases. You may choose the appropriate
power supply domains for the i.MX 8M Mini processors
and become familiar with the expected processor power
consumption in various scenarios.
Because the data presented in this application note is
based on empirical measurements taken on a small
sample size, the presented results are not guaranteed.
NXP Semiconductors
Document Number:
AN12410
Application Note
Rev.
0
,
04/2019
Contents
1. Introduction ........................................................................ 1
2. Overview of i.MX 8M mini voltage supplies ..................... 2
3. Internal power measurement of i.MX 8M mini processor . 6
3.1. DDR I/O power ....................................................... 6
3.2. Voltage levels in the measurement process ............. 7
3.3. Temperature measurements .................................... 8
3.4. Hardware and software used ................................... 9
3.5. Measuring points on EVK platform ........................ 9
4. Use cases and measurement results .................................. 10
4.1. Low-power mode use cases .................................. 10
4.2. Audio_Playback, M4 idle ..................................... 12
4.3. Core benchmark .................................................... 16
4.4. GPU ...................................................................... 18
4.5. Heavy-load use cases ............................................ 19
4.6. Memory ................................................................ 22
4.7. Storage – SD3.0 card ............................................ 24
4.8. Storage – eMMC ................................................... 25
4.9. Storage – USB 2.0 ................................................ 26
5. Reducing power consumption .......................................... 28
5.1. Steps to be performed before entering Suspend
(Deep-sleep) mode .............................................................. 29
5.2. Steps to be performed after exiting Suspend mode 29
6. Use-case configuration and usage guideline .................... 30
6.1. Suspend mode ....................................................... 30
6.2. System idle mode .................................................. 30
6.3. Audio_Playback .................................................... 32
6.4. C-Ray .................................................................... 36
6.5. Coremark .............................................................. 38
6.6. GPU ...................................................................... 39
6.7. Heavy-load use cases ............................................ 44
6.8. Memory ................................................................ 47
6.9. Storage – SD3.0 Card ........................................... 48
6.10. Storage – eMMC ................................................... 50
6.11. Storage – USB2.0 ................................................. 50
6.12. Important commands ............................................ 51
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