ESP32: When Is A P4 A P4, But Not The P4 You Thought It Was
Hackaday • • technology
Key Points:
- Espressif has released a new revision of their ESP32-P4 application processor that includes hardware changes such as a pin switching from NC to a power rail and additional passive components, requiring separate firmware builds for each revision.
- Both revisions are being sold under the same SKU, causing confusion among designers and wholesalers about which version is in stock and leading to assembly issues with incompatible boards.
- Some Chinese assembly houses have started listing the two revisions under separate SKUs, but many designers still face challenges with boards assembled using the wrong chip revision.
- Users working with the ESP32-P4 are advised to verify their board design compatibility with the latest revision and confirm chip versions with suppliers to avoid costly rework and firmware mismatches.
- Despite these issues, the ESP32-P4 remains a popular and cost-effective processor likely to be widely used in future projects.
