Traditionally, developing radiation-hardened systems for space applications has a history of long lead-times and high costs to achieve the highest level of reliability for multi-year missions in a harsh environment.
The AtmegaS64M1 is the second 8-bit megaAVR® MCU from Microchip that uses a development approach called COTS-to-radiation-tolerant. This approach takes a proven automotive-qualified device, such as the Atmega64M1, and creates pin-out compatible versions in both high-reliability plastic and space-grade ceramic packages. The devices are designed to meet radiation tolerances with the following targeted performances:
- Fully immune from Single-Event Latchup (SEL) up to 62 MeV.cm²/mg
- No Single-Event Functional Interrupts (SEFI) which secure memory integrity
- Accumulated Total Ionizing Dose (TID) between 20 to 50 Krad(Si)
- Single Event Upset (SEU) haracterization for all functional blocks
The new device joins the AtmegaS128, a radiation-tolerant MCU that has already been designed into several critical space missions including a Mars exploration plus a megaconstellation of several hundred Low Earth Orbit (LEO) satellites.