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Use of development methods to transition from COTS to radiation-resistant products
Microchip Technology has launched a new microcontroller (MCU) that supports specific radiation resistance performance and low-cost development based on COTS (Commercial Off-The-Shelf) devices.
The ATmegaS64M1 is Microchip's second 8-bit megaAVR MCU, utilizing a development approach that transitions from COTS to radiation-resistant products. The ATmega64M1 is a verified automotive-certified device available in pinout-compatible versions in both high-reliability plastic and aerospace-grade ceramic packages. This device is designed to meet radiation resistance requirements with the following target performance.
This new device is also connected to the radiation-resistant MCU ATmegaS128, which has been adopted for several major space missions, including Mars exploration and hundreds of large-scale low Earth orbit (LEO) satellites.
The ATmega64M1 COTS device can be used to start hardware, firmware, and software development along with a complete development toolchain, including a development kit and a code configurator. When the final system is ready for the prototype stage or production, the COTS device can be replaced with a pinout-compatible radiation-resistant version in a 32-lead ceramic package (QFP32) that has the same functionality as the original device. This method significantly reduces costs as well as development time and risk.

Patrick Sauvage, Director of Microchip’s Aerospace Business Unit, stated, “By transitioning from COTS to radiation-resistant products, we have been able to go beyond simple device upscreening or performance improvements to create aerospace-grade components with uncompromising reliability.” He explained, “Since COTS devices can be replaced with fully functional, high-reliability plastic or ceramic equivalents with the same pinout, this approach reduces time, cost, and risk during development.”
The ATmegaS64M1 meets a high operating temperature range of -55°C to +125°C. This device is the first COTS-radiation resistant MCU that combines a Controller Area Network (CAN) bus, a digital-to-analog converter (DAC), and motor control functions. With these capabilities, the ATmegaS64M1 is ideal for various subsystems, such as remote terminal controllers and data processing functions, for satellites, constellations, launch vehicles, or major aerospace applications.
Microchip Technology has launched a new microcontroller (MCU) that supports specific radiation resistance performance and low-cost development based on COTS (Commercial Off-The-Shelf) devices.
The ATmegaS64M1 is Microchip's second 8-bit megaAVR MCU, utilizing a development approach that transitions from COTS to radiation-resistant products. The ATmega64M1 is a verified automotive-certified device available in pinout-compatible versions in both high-reliability plastic and aerospace-grade ceramic packages. This device is designed to meet radiation resistance requirements with the following target performance.
This new device is also connected to the radiation-resistant MCU ATmegaS128, which has been adopted for several major space missions, including Mars exploration and hundreds of large-scale low Earth orbit (LEO) satellites.
The ATmega64M1 COTS device can be used to start hardware, firmware, and software development along with a complete development toolchain, including a development kit and a code configurator. When the final system is ready for the prototype stage or production, the COTS device can be replaced with a pinout-compatible radiation-resistant version in a 32-lead ceramic package (QFP32) that has the same functionality as the original device. This method significantly reduces costs as well as development time and risk.
Patrick Sauvage, Director of Microchip’s Aerospace Business Unit, stated, “By transitioning from COTS to radiation-resistant products, we have been able to go beyond simple device upscreening or performance improvements to create aerospace-grade components with uncompromising reliability.” He explained, “Since COTS devices can be replaced with fully functional, high-reliability plastic or ceramic equivalents with the same pinout, this approach reduces time, cost, and risk during development.”
The ATmegaS64M1 meets a high operating temperature range of -55°C to +125°C. This device is the first COTS-radiation resistant MCU that combines a Controller Area Network (CAN) bus, a digital-to-analog converter (DAC), and motor control functions. With these capabilities, the ATmegaS64M1 is ideal for various subsystems, such as remote terminal controllers and data processing functions, for satellites, constellations, launch vehicles, or major aerospace applications.
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