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ESP8285 Datasheet Version 1.3 Copyright 2017About This Guide This document introduces the specications of ESP8285, including the following topics: Chapter Title Subject Provides an overview of ESP8285, including features, protocols, Chapter 1 Overview technical parameters and applications. Chapter 2 Pin Denitions Provides the pin layout and the relevant description. Describes major functional modules integrated on ESP8285 including Chapter 3 Functional Description CPU, ash and memory, clock, radio, Wi-Fi, and low-power management. Chapter 4 Peripheral Interface Provides descriptions of peripheral interfaces integrated on ESP8285. Chapter 5 Electrical Specications Lists the electrical data of ESP8285. Chapter 6 Package Information Illustrates the package details for ESP8285. Provides detailed pin information including digital die pin list, buffer Appendix A Pin List sheet, register list, and strapping pin list. Introduction to ESP8285-related must-read documents and must- Appendix B Learning Resources have resources. Release Notes Date Version Release notes 2016.04 V1.0 First release. 2016.11 V1.1 Added Appendix B Learning Resources. Changed the power consumption during Deep-sleep from 10 A to 20 A in Table 5-2. 2017.01 V1.2 Changed the crystal frequency range from 26 MHz to 52 MHz to 24 MHz to 52 MHz in Section 3.3. Changed the minimum working voltage from 3.0V to 2.5V. 2017.05 V1.3 Changed the chip s input impedance of 50 to output impedance of 39+j6 .
