The MICROSATPRO from STM Defense International is a Satellite On-Board Computer (OBC) with an expected life of 5 years targeted for low-earth orbit operations. This OBC has a 32-bit Leon 3 Fault-Tolerant processor with a 48 MHz 32 MB SDRAM. It has an instruction cache of 8 kB and a data cache of 4 kB. The OBC has a ROM (SPI) of 128 MB (Post-EDAC) and a ROM (parallel) of 8 GB (EDAC). It has a radiation tolerance TID of 30 kRAD (Si) and supports RS485, RS422, CAN, Spacewire, SPI, and I2C interfaces. The OBC weighs 280 g and measures 130 ×126 ×18 mm. It is compatible with microsatellite platforms for advanced space missions.
