– 25 May 2020 – Teledyne
has announced the DDR4T04G72M —
the first radiation-tolerant DDR4 memory chip, featuring a total 4GB capacity.
Currently validated at 2133MT/s, and targeting to offer 2400MT/s in the near
future, this next-generation solution offers ultra-responsive low latency
operation, while fitting into a highly compact form factor. Furthermore,
high-reliability manufacturing and radiation-tolerant robustness makes it
highly suitable for dealing with the rigors of space environments.

With 15mm x 20mm x 1.92mm dimensions, this new space-grade
device comprises an array of Micron based memory chips, integrated in a single
package. It features a 72bit bus, where 64bits are dedicated to data and 8bits
to error correction code (ECC).


Radiation tests have been performed on these memory chips
and a single event effects (SEE) report is available from Teledyne e2v. In
particular, the memory has been demonstrated to be single event latch-up (SEL)
free up to 60+MeV.cm2/mg.


This new space-grade DDR4 memory enables elevated levels of
performance, while taking up minimal board real estate — something that is
certain to be of value in highly space-constrained, densely-packed satellite
designs. It can be used in conjunction with processors and FPGAs having a DDR4
controller, and is in particular embedded on Teledyne
e2v Space version of Qormino® Common Compute Platform
with a space version of NXP LS1046 quad core processor (QLS1046-4GB).


The thermally-enhanced packaging technology accelerates heat
dissipation, in order to maintain continued operational reliability. Flight
Models will be available up to an extended temperature range of -55°C to 125°C.
It is compliant with NASA Level 1 (NASA EEE-INST-002 — Section M4 — PEMs) and
ECSS Class 1 (ECSS-Q-ST-60-13C).

“The combination of radiation tolerance, rugged construction
and small form factor, make this Radiation Tolerant 4GB DDR4 memory a very
appealing solution for integration into space-oriented systems,” states Thomas
Guillemain, Marketing & Business Development Manager at Teledyne e2V
Semiconductors. “This space-grade DDR4 offers the transition path to newer
generations of processing devices required by compute intensive space

About Teledyne e2v

Teledyne e2v’s innovations lead developments in healthcare,
life sciences, space, transportation, defense and security and industrial markets.
Teledyne e2v’s unique approach involves listening to the market and application
challenges of customers and partnering with them to provide innovative
standard, semi-custom or fully-custom solutions, bringing increased value to
their systems.


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