Microchip releases COTS-based rad-tolerant solution

CHANDLER, Ariz. Microchip Technology Inc. officials released the ATmegaS64M1, an 8-bit megaAVR microcontroller (MCU) that uses a COTS-to-radiation-tolerant [commercial off-the-shelf] development approach in response to New Space and other critical aerospace applications that require faster development time and reduced cost.

The MCU combines specified radiation performance with low-cost development associated with components. This approach creates pinout 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) whith secure memory integrity; Accumulated Total Ionizing Dose (TID) between 20 to 50 Krad(Si); and Single Event Upset (SEU) characterization for all functional blocks.

The ATmega64M1 COTS device, along with its development toolchain including development kits and code configurator, can be used to begin development of hardware, firmware, and software. When the final system is ready for the prototype phase or production, the COTS device can be replaced with a pin-out compatible, version in a 32-lead ceramic package (QFP32) with the same functionality as the original device.

The ATmegaS64M1 meets the high operating temperature range of -55° C to +125° C. It is a COTS-to-radiation-tolerant MCU that combines a Controller Area Network (CAN) bus, Digital-to- Converter () and motor control capabilities.

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