Comet A65 SOM and Carrier Board Revision Document
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Contents |
How to Find the DE25-Nano Development Kit Revision?
On the bottom view of the PCB, there is a seal mark for the board hardware version.
As shown in the figure below, if the letter inside the red circle is "C0", it means that the PCB version is Rev.C.
"B0" for Rev.B.
Comet A65 SOM
Comet A65 Carrier Board
Comet A65 SOM and Carrier Board Revision Document
This document records the hardware revision history of the Comet A65 System-on-Module (SOM) and Carrier Board.
| Revision | Release Date | Summary of Changes |
|---|---|---|
| Rev C | May 2026 | 1. SOM FPGA changed from Engineering Sample (ES) to Production version. 2. Carrier Board power input connector changed. |
| Rev B | 2025 | Initial Release. |
Hardware Revision History
Comet A65 SOM
| Board Revision | FPGA Part Number | Description |
|---|---|---|
| Rev C | A5ED065BB32AE4S | Upgraded to Production FPGA Silicon. |
| Rev B | A5ED065BB32AE4SR0 | Engineering Sample (ES) FPGA Silicon. |
Comet A65 Carrier Board
| Board Revision | Power Connector | Description |
|---|---|---|
| Rev C | 2x3 Pin Header | Power input changed from DC Jack to a 2x3 header for improved physical connection and stability. |
| Rev B | DC Power Jack | Standard DC power jack input. |
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Change Details
1. FPGA Part Number Change (SOM)
In Rev C, the FPGA on the Comet A65 SOM has been updated from the Engineering Sample (ES) to the fully qualified Production version.
- Old (Rev B): A5ED065BB32AE4SR0 (ES)
- New (Rev C): A5ED065BB32AE4S (Production)
Note: The Production FPGA offers optimized power performance and long-term stability. It is highly recommended to use the Rev C SOM for all new project developments and mass production.
2. Power Input Connector Change (Carrier Board)
The power input interface on the Carrier Board has been modified to accommodate industrial requirements and provide a more robust connection.
- Old (Rev B): Standard DC Power Jack.
- New (Rev C): 2x3 Pin Header. This change provides a more secure locking mechanism and better current-carrying capacity for demanding applications.
(Optional: Insert images comparing the Rev B DC Jack and the Rev C 2x3 Header here to help users identify their board version visually.)
