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ESP32-C2 (ESP8684) Upgrade: More Memory, Storage, and Performance

Shanghai, China
Mar 3, 2025

To fully leverage the improved capabilities of the ESP32-C2, we recommend that all developers and manufacturers update to use the latest ESP-IDF minor version as soon as possible.

Espressif has upgraded the ESP32-C2 (ESP8684) to enhance its performance and efficiency. This update provides additional memory and Flash storage, enabling developers to build more complex applications while ensuring long-term stability and support.

Why Upgrade?

To fully leverage the improved capabilities of the ESP32-C2, we recommend that all developers and manufacturers update to use the latest ESP-IDF minor version as soon as possible. Upgrading ensures compatibility with the latest hardware versions and prevents potential performance or stability issues 

Delaying the upgrade may result in compatibility issues, affecting performance and development efficiency. Espressif provides comprehensive technical documentation and resources to support a smooth migration.

Key Benefits

  • Improved Memory for Real-Time Processing – Gain up to 20 KB of additional SRAM, enhancing real-time data processing and multi-tasking capabilities. This is particularly valuable for IoT devices, reducing the risk of memory overflow and improving program stability. Developers can now store more runtime data, optimize algorithms, and expand functionalities without worrying about memory constraints. 

  • Expanded Flash Storage for Greater Flexibility – With approximately 100 KB of extra Flash memory, developers can integrate larger OTA update packages, store more preloaded data, and extend device functionality over time. This additional space also allows for better logging and debugging, making performance optimization easier in real-world applications. 

  • Enhanced Performance and Stability – The combination of the ESP32-C2 v2.0 chip and the upgraded ESP-IDF framework optimizes hardware resource utilization, providing a smoother, more efficient development experience. 

Upgrading now ensures optimal performance and future-proof reliability for your projects. For detailed guidance, refer to Espressifs technical resources.

Product Upgrade Comparison: Before and After 

Category 
After Upgrade 
Before Upgrade 
Product Name 
No change: e.g., ESP8684, ESP8684-MINI-1.
Product Variants 
The product ordering code is based on the pre-upgrade code with an "X" added at the end, indicating Extended. e.g., ESP8684H2X, ESP8684-MINI-1-H2X.
e.g., ESP8684H2, ESP8684-MINI-1.
Chip Hardware Version 
Chip Revision v2.0.
Chip Revision v1.2.
IDF v5.4, IDF v5.3.2, v5.2.4, v5.1.5, IDF v5.0.8 and above.
v5.0 and above.
Optimization 
Increased user-available space, with approximately 20 KB of additional SRAM and about 100 KB of Flash space (depending on the actual application).
 

Getting Support and More Information 

This upgrade enhances performance and reliability, providing stronger support for your projects. For technical details, upgrade guidelines, and the latest software versions, visit Espressifs official website and join the discussion on our forum.  

If youhave any questions about this upgrade or need any assistance during the upgrade process, please feel free to contact your Espressif account manager or reach out to us through our official website. Lets move forward to an even better development experience!  

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lizihan

数字营销管培生

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