AX500-1BG896 ACTEL [Actel Corporation], AX500-1BG896 Datasheet - Page 7

• Manufacturer Part Number: AX500-1BG896
• Description: Axcelerator Family FPGAs
• Manufacturer: ACTEL [Actel Corporation]

General Description
Axcelerator offers high performance at densities of up to
two million equivalent system gates. Based upon the
Actel AX architecture, Axcelerator has several system-
level features such as embedded SRAM (with complete
FIFO control logic), PLLs, segmentable clocks, chip-wide
highway routing, and carry logic.
Device Architecture
Actel's AX architecture, derived from the highly-
successful SX-A sea-of-modules architecture, has been
designed for high performance and total logic module
utilization
entire floor of the Axcelerator device is covered with a
grid of logic modules, with virtually no chip area lost to
interconnect elements or routing.
Programmable Interconnect
Element
The Axcelerator family uses a patented metal-to-metal
antifuse programmable interconnect element that resides
between the upper two layers of metal
Figure 1-1 • Sea-of-Modules Comparison
(Figure
Switch
Matrix
1-1). Unlike in traditional FPGAs, the
Traditional FPGA
Architecture
Routing
(Figure 1-2 on
v2.7
page
routing and interconnect resources between logic
modules (as implemented on traditional FPGAs) and
enables the efficient sea-of-modules architecture. The
antifuses
programmed,
impedance connection, leading to the fastest signal
propagation in the industry. In addition, the extremely
small size of these interconnect elements gives the
Axcelerator family abundant routing resources.
The
technology provides excellent protection against design
pirating and cloning (FuseLock technology). Cloning is
impossible
unprogrammed) as no bitstream or programming file is
ever downloaded or stored in the device. Reverse
engineering is virtually impossible due to the difficulty of
trying
unprogrammed
programming methodology of antifuse devices (see
"Security" on page
Logic Block
very
1-2). This completely eliminates the channels of
to
are
nature
distinguish
(even
form
normally
antifuses
2-90).
if
of
a
Sea-of-Modules
the
Actel's
between
Architecture
permanent,
open
and
Axcelerator Family FPGAs
security
nonvolatile
Modules
circuit
also
Logic
programmed
passive,
fuse
due
and,
antifuse
to
is
when
low-
and
left
the
1-1