AN725 Datasheet | Silicon Labs

features to address reducing power consumption in all operational modes to achieve a longer product lifetime in battery-operated systems. This document addresses each of these features and provides guidelines for achieving low power consumption in a variety of configurations and applications. .Data Sheet.net/ 2. Key Points This key topics of this document are as follows: - How to reduce active mode time and power consumption to reduce low power mode power consumption - Measuring the low power modes on an Si M3L1xx MCU card - General power-saving tips - How 3. Relevant Documentation Precision32™ Application Notes are listed on the following website: .silabs./32bit-appnotes. - AN666: Usage Guide for e Si M3U1xx,Si M3C1xx, and Si M3L1xx DMA and DTM Modules - AN720: Precision32™ Optimization Considerations for Code Size and Speed - AN667: Getting Started with the Silicon Labs Precision32 IDE - AN670: Getting Started with the Silicon Labs Precision32 App Builder Rev. 0.1 9/12 Copyright © 2012 by Silicon Laboratories Datasheet pdf - http://..co.kr/ 4. Reducing Active Mode Power Consumption In active mode, the core is fetching instructions from memory and executing those instructions, and a large number of peripherals may be active at once. This section discusses ways to reduce the Si M3L1xx device power consumption in active mode (Normal, PM1, PM4, or PM5). 4.1. Dynamic AHB/APB Clock Scaling One of the easiest ways to reduce overall system power consumption is to reduce the active mode time, which maximizes the amount of time spent in the low power mode. If the longest path to the next low power mode is the execution of code (e.g., a math algorithm), then it is typically beneficial to run the AHB clock at the fastest speed possible to reduce the time spent in active mode. If the longest path to the next low power mode is the transfer or collection of data through a peripheral, it is best to run the clock at the lowest speed required for the peripheral. For...