VA4 FAMILY
ANY ORBIT.
ANY MISSION.
100% Compatible Twin Chips
The VA4 microcontroller family offers radiation-tolerant microcontrollers for low Earth orbit missions at a fraction of the cost, alongside radiation-hardened microcontrollers for more demanding applications. Choose the level of protection that fits your mission requirements.
From Low Earth Orbit to Deep Space
The VA4 microcontroller family gives engineers a common Arm® Cortex®-M4 foundation across radiation-tolerant and radiation-hardened components. Choose integrated or external non-volatile memory, the peripheral mix, package, and radiation performance that fit the mission, from cost-conscious low Earth orbit platforms to high-reliability geosynchronous orbit and deep-space systems.
From Low Earth Orbit and Beyond
Proven Technology Across Mission Environments
The VA4 microcontroller family combines Arm Cortex-M4 compute and control with error detection and correction, memory scrubbing, and configurations built for demanding operating environments. The radiation-hardened line uses VORAGO’s patented HARDSIL technology, its unique Radiation Hardened by Process (RHBP) approach, for greater protection against total ionizing dose, single-event latch-up, and single-event upsets. VORAGO also created the Radiation Tolerant by Design (RTBD) category used for the complementary radiation-tolerant twin MCU.
The VA41630 sets the family’s qualification benchmark with DLA QML Class Q+ qualification, Standard Microcircuit Drawing 5962R2420301QXC, and Radiation Hardness Assurance Level R.
Get the VA4 Product Datasheet
Complete specifications, radiation performance data, and package options for the VA4 microcontroller family.
RAD-TOLERANT
RAD-HARDENED
TID >300 krad(Si)
SEL immunity >110 MeV·cm²/mg at 125°C
TID >30 krad(Si)
SEL immunity >40 MeV·cm²/mg at 85°C
VA42620
VA41620
Maintain control over external memory selection as mission requirements change. Pin- and software-compatible options let teams use the lower-cost VA42620 for low Earth orbit and high-altitude platforms, then move to the radiation-hardened VA41620 for more demanding environments.
RAD-TOLERANT
RAD-HARDENED
TID >200 krad(Si) with FRAM
SEL immunity >110 MeV·cm²/mg at 125°C
TID >30 krad(Si)
SEL immunity >40 MeV·cm²/mg at 85°C
VA42630
VA41630
Reduce system complexity by integrating compute and control, plus 256 KB of non-volatile memory, into a single component. The VA42630 brings that functional density to low Earth orbit at a fraction of the cost, while the VA41630 adds radiation-hardened performance and government qualification for demanding environments.
RAD-TOLERANT
RAD-HARDENED
TID >200 krad(Si) with FRAM
SEL immunity >110 MeV·cm²/mg at 125°C
TID >30 krad(Si)
SEL immunity >40 MeV·cm²/mg at 85°C
VA42628
VA41628
Built for digital-centric control functions that do not require external analog sensor interfaces, the VA42628 and VA41628 provide essential compute and control without the cost of unused analog capabilities. Choose the VA42628 for lower-radiation missions or the VA41628 when the application requires radiation-hardened protection.
RAD-TOLERANT
RAD-HARDENED
TID >300 krad(Si)
SEL immunity >110 MeV·cm²/mg at 125°C
TID >30 krad(Si)
SEL immunity >40 MeV·cm²/mg at 85°C
VA42629
VA41629
Keep the compute performance, analog interfaces, GPIO, and timers needed for control applications while leaving out Ethernet, SpaceWire, and CAN. The VA42629 delivers that cost-optimized feature set for lower-orbit missions, while the VA41629 delivers the same focused functionality to more demanding radiation environments.