| 
                       | 
                  
            Upgrade ESP32-C2 (ESP8684) Series Products           | 
                  
            PCN20250101           | 
                  
            2025.01.24           | 
                  
            2025.03.24           | 
                  
            2025.04.24           | 
                  
              
    
  
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            Shield Cover Marking Change for ESP32-C6-WROOM-1 Modules           | 
                  
            PCN20241003           | 
                  
            2024.10.30           | 
                  
            2024.11.20           | 
                  
            2024.11.30           | 
                  
              
    
  
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            Upgrade of ESP32-C3FH4X Product           | 
                  
            PCN20240702           | 
                  
            2024.09.13           | 
                  
            2024.10.15           | 
                  
            2024.10.28           | 
                  
              
    
  
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            Upgrade of ESP32-C6 Series Products            | 
                  
            PCN20240701           | 
                  
            2024.09.13           | 
                  
            2024.10.06           | 
                  
            2024.11.06           | 
                  
              
    
  
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            Upgrade ESP32-S2 Series Products Based on ESP32-S2FH4           | 
                  
            PCN20240602           | 
                  
            2024.07.02           | 
                  
            2024.09.02           | 
                  
            2024.10.02           | 
                  
              
    
  
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                  | 
                       | 
                  
            ShieldCoverMarkingChangeforESPModules           | 
                  
            PCN20240301           | 
                  
            2024.03.28           | 
                  
            2024.04.15           | 
                  
            2024.04.30           | 
                  
                
       
    
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            UpgradeESP32-C2 (ESP8684) SeriesProductsfromChipRevisionv1.1toChipRevisionv1.2           | 
                  
            PCN20231102           | 
                  
            2024.01.23           | 
                  
            2024.02.23           | 
                  
            2024.03.23           | 
                  
              
    
  
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            BOM  Change  for  Several  ESP8685-Based  Modules           | 
                  
            PCN20240101           | 
                  
            2024.01.08           | 
                  
            2024.03.08           | 
                  
            2024.04.08           | 
                  
              
    
  
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            Shield Cover Marking Change for ESP32-C3-MINI-1 Modules           | 
                  
            PCN20231202           | 
                  
            2023.12.20           | 
                  
            2023.12.31           | 
                  
            2024.01.10           | 
                  
                
       
    
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            Delete Common AT Firmware on ESP32-C3 Series Modules from Manufacture Line           | 
                  
            PCN20231103           | 
                  
            2023.12.20           | 
                  
            2024.01.10           | 
                  
            2024.01.30           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-S2 Series Products Based on ESP32-S2FH2           | 
                  
            PCN20231201           | 
                  
            2023.12.05           | 
                  
            2023.12.31           | 
                  
            2023.12.31           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-C6 Series Products           | 
                  
            PCN20231101           | 
                  
            2023.11.01           | 
                  
            2023.11.16           | 
                  
            2023.12.10           | 
                  
              
    
  
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            Shield Cover Marking Change for ESP32-S3 Series Modules           | 
                  
            PCN20230802           | 
                  
            2023.08.30           | 
                  
            2023.09.30           | 
                  
            2023.10.15           | 
                  
              
    
  
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            Upgrade ESP32-C2 (ESP8684) Series from Chip Revision v1.0 to Chip Revision v1.1           | 
                  
            PCN20230701           | 
                  
            2023.08.24           | 
                  
            2023.10.24           | 
                  
            2023.11.24           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-S2 Series Products Based on ESP32-S2           | 
                  
            PCN20230702           | 
                  
            2023.07.28           | 
                  
            2023.09.28           | 
                  
            2023.11.01           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-S2 Series Products Based on ESP32-S2R2 and ESP32-S2FN4R2           | 
                  
            PCN20230601           | 
                  
            2023.06.29           | 
                  
            2023.08.29           | 
                  
            2023.09.29           | 
                  
              
    
  
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            Espressif Chip Product Packaging Label Format Change           | 
                  
            PCN20230502           | 
                  
            2023.06.16           | 
                  
            2023.06.21           | 
                  
            2023.07.01           | 
                  
              
    
  
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            Remove Hall Sensor from ESP32 Series of Documentation           | 
                  
            PCN20221202           | 
                  
            2023.01.09           | 
                  
            2023.01.27           | 
                  
            2023.01.27           | 
                  
              
    
  
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            BOM Change for ESP32-C3-WROOM-02U           | 
                  
            PCN20221201           | 
                  
            2022.12.30           | 
                  
            2023.01.14           | 
                  
            2023.01.20           | 
                  
              
    
  
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            Remove "antenna diversity" Feature of Bluetooth LE in ESP32-S3, ESP8685, ESP32-C3 Chip Datasheets           | 
                  
            PCN20221203           | 
                  
            2022.12.23           | 
                  
            2022.12.29           | 
                  
            2022.12.29           | 
                  
              
    
  
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            Remove "External power amplifier support" Feature in ESP32-S2, ESP32-S3, ESP8684, ESP8685, ESP32-C3 Chip Datasheets           | 
                  
            PCN20221102           | 
                  
            2022.12.01           | 
                  
            2022.12.14           | 
                  
            2022.12.14           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32 Series Products           | 
                  
            PCN20220901           | 
                  
            2022.10.25           | 
                  
            2022.12.25           | 
                  
            2023.01.25           | 
                  
              
    
  
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            BOM Change for ESP32-S3-WROOM-2           | 
                  
            PCN20220802           | 
                  
            2022.09.30           | 
                  
            2022.10.14           | 
                  
            2022.10.30           | 
                  
              
    
  
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            Release ESP32-C3-MINI-1 module Default Common AT firmware V2.4.2.0           | 
                  
            PCN20220902           | 
                  
            2022.09.29           | 
                  
            2022.10.15           | 
                  
            2022.12.16           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-S3 Series Products           | 
                  
            PCN20220602           | 
                  
            2022.08.11           | 
                  
            2022.08.20           | 
                  
            2022.11.11           | 
                  
              
    
  
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            Upgrade Chip Revision of ESP32-C3 Series Products from Chip Revision 3 to Chip Revision 4           | 
                  
            PCN20220101           | 
                  
            2022.04.02           | 
                  
            2022.04.30           | 
                  
            2022.06.15           | 
                  
              
    
  
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            Upgrade Manufacturer Part Number and Laser Marking of Espressif Module           | 
                  
            PCN-2021-030           | 
                  
            2021.12.22           | 
                  
            2022.01.10           | 
                  
            2022.01.25           | 
                  
              
    
  
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            Shield Cover Marking Change for Espressif Modules           | 
                  
            PCN-2021-028           | 
                  
            2021.11.18           | 
                  
            2021.11.30           | 
                  
            2021.12.15           | 
                  
              
    
  
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            Release ESP32-MINI-1 / ESP32-MINI-1U Module Default Common AT Firmware V2.2.0.0           | 
                  
            PCN-2021-027           | 
                  
            2021.10.22           | 
                  
            2021.11.23           | 
                  
            2021.12.03           | 
                  
              
    
  
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            Espressif Common AT Firmware is not Flashed to ESP32-S2 & ESP8266 (16MB flash) Series of Modules by Default from the Manufacturing Line           | 
                  
            PCN-2021-026           | 
                  
            2021.10.22           | 
                  
            2022.01.05           | 
                  
            2022.01.22           | 
                  
              
    
  
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            The PCB EPAD Vias are Changed to be Double-sided Plugged for ESP32-WROVER-E/IE           | 
                  
            PCN-2021-025           | 
                  
            2021.10.22           | 
                  
            2021.11.25           | 
                  
            2021.12.25           | 
                  
              
    
  
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            Espressif Chip Product Packing Label Format Change           | 
                  
            PCN-2021-024           | 
                  
            2021.09.23           | 
                  
            2021.10.01           | 
                  
            2021.10.11           | 
                  
              
    
  
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            Change the series resistor specification of the 40MHz crystal for ESP32 (-40°C~105°C) modules           | 
                  
            PCN-2021-023           | 
                  
            2021.09.10           | 
                  
            2021.09.24           | 
                  
            2021.09.24           | 
                  
              
    
  
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                  | 
                       | 
                  
            Upgrade ESP32-U4WDH to a Dual-Core Processor Product           | 
                  
            PCN-2021-021           | 
                  
            2021.09.02           | 
                  
            2021.12.02           | 
                  
            2021.12.02           | 
                  
              
    
  
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                  | 
                       | 
                  
            Update ESP32 (4MB flash) series modules AT firmware version to V2.1.0.0           | 
                  
            PCN-2021-010           | 
                  
            2021.04.12           | 
                  
            2021.06.12           | 
                  
            2021.07.12           | 
                  
              
    
  
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                       | 
                  
            Espressif common AT firmware is not flashed to ESP32 series of modules (8MB/16MB flash) by default from the manufacturing line           | 
                  
            PCN-2021-005           | 
                  
            2021.04.12           | 
                  
            2021.04.30           | 
                  
            2021.05.28           | 
                  
              
    
  
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                       | 
                  
            Upgrading the label format, updating KCC ID for ESP32-WROOM-32D and filling the thermal pad with solder mask for ESP32-WROOM-32D & ESP32-WROOM-32U           | 
                  
            PCN-2021-009           | 
                  
            2021.04.10           | 
                  
            2021.04.25           | 
                  
            2021.04.25           | 
                  
              
    
  
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                  | 
                       | 
                  
            Shield Cover Marking Change for ESP Modules           | 
                  
            PCN-2021-008           | 
                  
            2021.03.16           | 
                  
            2021.03.19           | 
                  
            2021.03.23           | 
                  
              
    
  
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                  | 
                       | 
                  
            KCC Certification ID and Identification Changes for ESP32-WROOM-32/32D/32U, ESP32-WROVER-B/IB, ESP32-SOLO-1, and ESP-WROOM-02/02U Modules           | 
                  
            PCN-2020-017           | 
                  
            2020.11.17           | 
                  
            2020.11.16           | 
                  
            2020.12.16           | 
                  
              
    
  
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                  | 
                       | 
                  
            Changes of the marking on ESP32-WROVER-E and ESP32-WROVER-IE to add new certification identification           | 
                  
            PCN-2020-016           | 
                  
            2020.11.06           | 
                  
            2020.10.28           | 
                  
            2021.01.28           | 
                  
              
    
  
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                  | 
                       | 
                  
            Introduction of AT firmware V2.1.0.0 as the first published AT firmware for ESP32-S2 series Modules and DevKits           | 
                  
            PCN-2020-014           | 
                  
            2020.09.11           | 
                  
            2020.09.11           | 
                  
            2020.12.11           | 
                  
              
    
  
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                  | 
                       | 
                  
            Change of module from ESP32-WROVER-B to ESP32-WROVER-E on ESP32-LyraT, ESP32-LyraTD- MSC, and ESP32-LyraT-Mini           | 
                  
            PCN-2020-013           | 
                  
            2020.08.28           | 
                  
            2020.08.28           | 
                  
            2020.11.28           | 
                  
              
    
  
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                  | 
                       | 
                  
            Strengthening the ESP8266/ESP32/ESP32-S2 Module Series Tape Reel by Embossing Cross Patterns at the Bottom of each Tray           | 
                  
            PCN-2020-008           | 
                  
            2020.08.17           | 
                  
            2020.08.17           | 
                  
            2020.09.14           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP8266 modules AT bin upgrade to V1.7.3           | 
                  
            PCN-2020-004           | 
                  
            2020.04.26           | 
                  
            2020.04.26           | 
                  
            2020.07.16           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP8266EX Chip Datasheet Amendments           | 
                  
            PCN-2020-003           | 
                  
            2020.03.31           | 
                  
            2020.04.01           | 
                  
            2020.04.02           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP8285 Series Chip Datasheet Amendments           | 
                  
            PCN-2020-002           | 
                  
            2020.03.31           | 
                  
            2020.04.01           | 
                  
            2020.04.02           | 
                  
              
    
  
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                  | 
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            ESP32-WROVER-B Datasheet Amendments           | 
                  
            PCN-2020-001           | 
                  
            2020.03.18           | 
                  
            2020.03.23           | 
                  
            2020.04.01           | 
                  
              
    
  
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                  | 
                       | 
                  
            Adding a QR code to the shielding case of ESP-WROOM-02/ESP32-WROOM-32/ESP32-WROVER           | 
                  
            PCN-03-2019120301           | 
                  
            2019.12.02           | 
                  
            2020.12.05           | 
                  
            2020.02.20           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP32 Series Products Technical Document Change           | 
                  
            PCN-02-20190815           | 
                  
            2019.11.01           | 
                  
            2019.11.01           | 
                  
            2019.11.01           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP8266 Series Chip Product Technical Document Change           | 
                  
            PCN-02-20190716           | 
                  
            2019.08.01           | 
                  
            2019.07.16           | 
                  
            2019.08.01           | 
                  
              
    
  
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                  | 
                       | 
                  
            Add a 6-bit Code on Labels of all Modules to Indicates its Operating Temperature and Flash Size (International version)           | 
                  
            PCN-03-2019070102           | 
                  
            2019.07.12           | 
                  
            2019.07.12           | 
                  
            2019.07.15           | 
                  
              
    
  
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                  | 
                       | 
                  
            Add a 6-bit Code on Labels of all Modules to Indicates its Operating Temperature and Flash Size (China domestic version)           | 
                  
            PCN-03-2019070101           | 
                  
            2019.07.12           | 
                  
            2019.07.12           | 
                  
            2019.07.15           | 
                  
              
    
  
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                  | 
                       | 
                  
            ESP8285 Datasheet Change           | 
                  
            PCN-04-20190625           | 
                  
            2019.06.25           | 
                  
            2019.08.25           | 
                  
            2019.08.28           | 
                  
              
    
  
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                  | 
                       | 
                  
            QR Code Information Change for ESP32-WROVER-B Modules           | 
                  
            PCN-03-2019060501           | 
                  
            2019.06.12           | 
                  
            2019.06.12           | 
                  
            2019.06.19           | 
                  
              
    
  
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                  | 
                       | 
                  
            Upgrading AT Firmware for ESP32 Modules                 | 
                  
            PCN-03-2019011001           | 
                  
            2019.04.10           | 
                  
            2019.01.10           | 
                  
            2019.04.10           | 
                  
              
    
  
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                  | 
                       | 
                  
            Packaging Changes to Espressif Modules           | 
                  
            PCN-03-20190215           | 
                  
            2019.03.08           | 
                  
            2019.02.15           | 
                  
            2019.03.08           | 
                  
              
    
  
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                  | 
                       | 
                  
            AT Bin Version Upgrade For ESP8266 Modules           | 
                  
            PCN-03-2018112601           | 
                  
            2019.01.26           | 
                  
            2018.11.26           | 
                  
            2019.01.26           | 
                  
              
    
  
           | 
              
          
                  | 
                       | 
                  
            Updating the Datasheets of the ESP32 Series of Products           | 
                  
            PCN-03-20190121           | 
                  
            2019.01.21           | 
                  
            2019.01.21           | 
                  
            2019.01.21           | 
                  
              
    
  
           | 
              
          
                  | 
                       | 
                  
            AT Bin Upgrade for ESP32 Series Module           | 
                  
            PCN-03-2018083001           | 
                  
            2018.11.30           | 
                  
            2018.08.30           | 
                  
            2018.11.30           | 
                  
              
    
  
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                  | 
                       | 
                  
            Updating the Operating Temperature Information in the ESP32-WROVER Datasheet and Changing the C18 Capacitor           | 
                  
            PCN-03-201800921-1           | 
                  
            2018.11.06           | 
                  
            2018.11.06           | 
                  
            2018.12.06           | 
                  
              
    
  
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                  | 
                       | 
                  
            Notice of Customized China Label for All Espressif Modules           | 
                  
            PCN-03-201800921-2           | 
                  
            2018.10.19           | 
                  
            2018.10.12           | 
                  
            2018.10.19           | 
                  
              
    
  
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