2340 - [MachXO2]: What is the maximum size of the SSPI Embedded SEA/SED data files?
The SSPI Embedded data files have some overhead added to the raw data to be sent to the FPGA. At the same time the SSPI Embedded code uses a basic compression technique to try to reduce the impact of the overhead. It is difficult to determine exactly how large the two files, when combined, will be.
A rough estimate for the maximum combined size of the SEA/SED can be performed by finding the bitstream size in the sysConfig technical note for the device family you are using. The maximum combined SEA/SED size is unlikely to be more than 10% greater.