VA4 FAMILY
ANY ORBIT.
ANY MISSION.
100% Compatible Twin Chips
The VA4 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 core 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 processing 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.