1 Introduction
This document discusses about the power consumption of i.MX RT1010. It
includes the following content:
• i.MX RT1010 overview
• Run mode definition and configuration
• Low-power mode definition and configuration
• How to measure power consumption based on MIMXRT1010 EVK board
• Power consumption under different power modes
The development environment in this application note is IAR Embedded
Workbench. The hardware environment is MIMXRT1010 EVK board (Rev C).
2 i.MX RT1010 chip overview
The i.MX RT1010 is a Cortex-M7 based chip. It operates at speed up to 500
MHz to provide high CPU performance and best real-time response.
• Cortex-M7 based processor which can operate at speed up to 500 MHz.
• 128 KB on-chip RAM which can be flexibly configured as a TCM or
general-purpose on-chip RAM.
• Advanced power management module with DCDC and LDO to reduce the
complexity of external power supply and simplifies power sequencing.
• Rich memory interfaces, including SPI NOR flash and a single/dual-
channel quad SPI flash with XIP.
• Various interfaces for connecting peripherals, such as Bluetooth
™
and
GPS.
• Audio features, including the SPDIF and I2S audio interfaces.
• Rich set of peripheral modules, such as SPI, I2C, Flex-Timers, ADC, and other.
• Target at Industrial HMI, Motor Control, and Home Appliance areas.
3 Low-power overview
3.1 Power supply
Table 1 shows the power supply rails of i.MX RT1010.
Contents
1 Introduction............................................ 1
2 i.MX RT1010 chip overview................... 1
3 Low-power overview.............................. 1
3.1 Power supply................ 1
3.2 Run mode..................... 2
3.3 Low-power mode.......... 4
4 How to measure power
consumption on MIMXRT1010 EVK... 6
4.1 MIMXRT1010-EVK
(REV C) board
overview.........................6
4.2 Current
measurements on
EVK................................7
4.3 Hardware rework for
the EVK..........................8
4.4 Run IAR-based
project demo
example – Power
mode switch................... 8
5 Power consumption results....................8
5.1 Run mode..................... 8
5.2 Low-power mode.......... 9
6 Conclusion........................................... 10
7 References.......................................... 10
8 Revision history................................... 11
AN12574
Power Consumption and Measurement of i.MX RT1010
Rev. 1 — 27 February 2020
Application Note
Table 1. External power supply rails
Power Rail Description
DCDC_IN Power for DCDC
SOC_IN Power for SOC
VDD_HIGH_IN Power for Analog
VDD_SNVS_IN Power for SNVS and RTC
USB_OTG1_VBUS Power for USB VBUS
VDDA_ADC_3P3 Power for 12-bit ADC
NVCC_GPIO IO power for GPIO in GPIO bank
3.2 Run mode
3.2.1 Run mode definition
Table 2. Run mode definition
Run mode Definition
Overdrive run • CPU runs at 500 MHz, overdrive voltage to 1.275 V
• Bus frequency at 125 MHz
• All the peripherals are enabled and runs at target frequency
• All PLLs are enabled
Full-speed run • CPU runs at 396 MHz, full loading, lower voltage to 1.15 V
• Bus frequency at 132 MHz
• All the peripherals are enabled and run at target frequency
• All PLLs are enabled
Low-speed run • CPU runs at 132 MHz, lower voltage to 1.15 V
• Internal bus frequency at 33 MHz
• All PLL and PFDs are disabled except SYSPLL, SYSPLLPFD2, and SYSPLLPFD3
• 20 % peripherals are active, others are in low-power mode
Low-power run • CPU runs at 24 MHz, lower voltage to 0.95 V
• Internal bus frequency at 12 MHz
• All PLLs are powered down, OSC24M powered down, RCOSC24 enabled
• High-speed peripherals are power down
In general, Run mode can be divided in four modes as shown in above table. The Low-speed run mode uses the bus clock of
Full-speed run mode as core clock, and Low-power run mode uses 24 MHz internal OSC as core clock source.
NXP Semiconductors
Low-power overview
Power Consumption and Measurement of i.MX RT1010 , Rev. 1, 27 February 2020
Application Note 2 / 12