A54SX16-1CG256 ACTEL [Actel Corporation], A54SX16-1CG256 Datasheet - Page 6

• Manufacturer Part Number: A54SX16-1CG256
• Description: SX Family FPGAs RadTolerant and HiRel
• Manufacturer: ACTEL [Actel Corporation]

Disclaimer
All radiation performance information is provided for
information purposes only and is not guaranteed. The
total dose effects are lot-dependent, and Actel does not
guarantee that future devices will continue to exhibit
similar radiation characteristics. In addition, actual
performance can vary widely due to a variety of factors,
including but not limited to, characteristics of the orbit,
radiation environment, proximity to satellite exterior,
amount of inherent shielding from other sources within
the satellite, and actual bare die variations. For these
reasons, Actel does not guarantee any level of radiation
survivability, and it is solely the responsibility of the
customer to determine whether the device will meet the
requirements of the specific design.
SX Family Architecture
The SX family architecture was designed to satisfy next-
generation performance and integration requirements
for production-volume designs in a broad range of
applications.
Figure 1-1 • SX Family Interconnect Elements
1 -2
SX Family FPGAs RadTolerant and HiRel
Tungsten Plug
Contact
Routing Tracks
Metal 2
Silicon Substrate
Metal 1
Metal 3
v2.1
Programmable Interconnect Element
Actel’s SX family provides much more efficient use of
silicon by locating the routing interconnect resources
between the Metal 2 (M2) and Metal 3 (M3) layers
(Figure
routing and interconnect resources between logic
modules (as implemented on SRAM FPGAs and previous
generations of antifuse FPGAs), and enables the entire
floor of the device to be spanned with an uninterrupted
grid of logic modules.
Interconnection between these logic modules is achieved
using Actel’s patented metal-to-metal programmable
antifuse interconnect elements, which are embedded
between the M2 and M3 layers. The antifuses are
normally open circuit and, when programmed, form a
permanent low-impedance connection.
The extremely small size of these interconnect elements
gives the SX family abundant routing resources and
provides excellent protection against design pirating.
Reverse engineering is virtually impossible, because it is
extremely difficult to distinguish between programmed
and
configuration bitstream to intercept.
Additionally, the interconnects (i.e., the antifuses and
metal tracks) have lower capacitance and lower
resistance than any other device of similar capacity,
leading to the fastest signal propagation in the industry.
unprogrammed
1-1). This completely eliminates the channels of
Amorphous Silicon/
Dielectric Antifuse
Tungsten Plug Via
antifuses,
and
there
is
no