Data Sheet

About This Guide
This document provides introduction to the specifications of ESP-WROOM-02 hardware.
Release Notes
Date
Version
Release notes
2015.12
V0.5
First release.
2016.01
V0.6
Updated Section 3.2.2.
2016.02
V0.7
•
Added Appendix—Notices.
•
Updated Chapter 1.
2016.04
V0.8
Updated the flash size and PAD (bottom) size.
2016.06
V0.9
Updated the flash size.
2016.06
V1.0
• Added Appendix—Notices—B.5.
• Updated Figure 2-1.
2016.08
V1.1
Updated the operating temperature range.
2016.11
V1.2
• Added Appendix—Learning Resources.
• Added “ESP-WROOM-02 Peripheral Schematics” in Chapter 5.
2016.11
V2.0
• Added Section 4.8 “Electrostatic Discharge”.
• Updated Figure 5-1. ESP-WROOM-02 Schematics.
2016.12
V2.1
• Changed the minimum working voltage from 3.0V to 2.5V.
• Changed the power consumption during Deep-sleep from 10 μA to 20 μA.
2017.02
V2.2
Updated Section 3.3.
2017.04
V2.3
• Added the module's dimensional tolerance;
• Changed the input impedance value in Table 4-4 and 4-5 from 50Ω to 39+j6 Ω;
• Added Figure 4-1 Reflow Profile.
2017.09
V2.4
• Added Documentation Change Notification and the official link for downloading
Product Certificates;
•
Updated the supply voltage to 2.7 V ~ 3.6 V;
•
Updated Figure 2-1 ESP-WROOM-02 Pin Layout and added a note to it;
•
Updated Chapter 4: Collated electrical-characteristics-related data into Table
4-1; collated Wi-Fi-radio-related data into Table 4-2 and updated the output
power parameters;
•
Updated Chapter 5 Schematics and added a note;
•
Added Chapter 6 Dimensions.
•
Deleted Appendix B—Notices.
2017.10
V2.5
Updated the note to ESP-WROOM-02 Peripheral Schematics in Chapter 5.