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SX-A Family FPGAs
v5.3
1-1
General Description
Introduction
The Actel SX-A family of FPGAs offers a cost-effective,
single-chip solution for low-power, high-performance
designs. Fabricated on 0.22
μm / 0.25 μm CMOS
antifuse technology and with the support of 2.5 V,
3.3 V and 5 V I/Os, the SX-A is a versatile platform to
integrate designs while significantly reducing time-
to-market.
SX-A Family Architecture
The SX-A family’s device architecture provides a unique
approach to module organization and chip routing that
satisfies performance requirements and delivers the most
optimal
register/logic
mix
for
a
wide
variety
of
applications.
Interconnection between these logic modules is achieved
using Actel’s patented metal-to-metal programmable
antifuse
interconnect
elements
The
antifuses
are
normally
open
circuit
and,
when
programmed,
form
a
permanent
low-impedance
connection.
Note: The A54SX72A device has four layers of metal with the antifuse between Metal 3 and Metal 4. The A54SX08A, A54SX16A, and
A54SX32A devices have three layers of metal with the antifuse between Metal 2 and Metal 3.
Figure 1-1 SX-A Family Interconnect Elements
Silicon Substrate
Metal 4
Metal 3
Metal 2
Metal 1
Amorphous Silicon/
Dielectric Antifuse
Tungsten Plug Via
Tungsten Plug Contact
Routing Tracks