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EX64-PTQ100PP Datasheet(PDF) 9 Page - Actel Corporation

Part # EX64-PTQ100PP
Description  eX Family FPGAs
Download  49 Pages
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Manufacturer  ACTEL [Actel Corporation]
Direct Link  http://www.actel.com
Logo ACTEL - Actel Corporation

EX64-PTQ100PP Datasheet(HTML) 9 Page - Actel Corporation

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eX Family FPGAs
v4.3
1-5
Other Architectural Features
Performance
The combination of architectural features described
above enables eX devices to operate with internal clock
frequencies exceeding 350 MHz for very fast execution
of complex logic functions. The eX family is an optimal
platform
upon
which
the
functionality
previously
contained in CPLDs can be integrated. eX devices meet
the performance goals of gate arrays, and at the same
time, present significant improvements in cost and time
to market. Using timing-driven place-and-route tools,
designers
can
achieve
highly
deterministic
device
performance.
User Security
The Actel FuseLock advantage ensures that unauthorized
users will not be able to read back the contents of an
Actel antifuse FPGA. In addition to the inherent
strengths of the architecture, special security fuses that
prevent internal probing and overwriting are hidden
throughout the fabric of the device. They are located
such that they cannot be accessed or bypassed without
destroying the rest of the device, making both invasive
and more-subtle noninvasive attacks ineffective against
Actel antifuse FPGAs.
Look for this symbol to ensure your valuable IP is secure.
For more information, refer to Actel's Implementation of
Security in Actel Antifuse FPGAs application note.
I/O Modules
Each I/O on an eX device can be configured as an input,
an output, a tristate output, or a bidirectional pin. Even
without the inclusion of dedicated I/O registers, these I/
Os, in combination with array registers, can achieve
clock-to-out (pad-to-pad) timing as fast as 3.9 ns. I/O cells
in eX devices do not contain embedded latches or flip-
flops and can be inferred directly from HDL code. The
device can easily interface with any other device in the
system, which in turn enables parallel design of system
components and reduces overall design time.
All unused I/Os are configured as tristate outputs by
Actel's Designer software, for maximum flexibility when
designing new boards or migrating existing designs. Each
I/O module has an available pull-up or pull-down resistor
of approximately 50 k
Ω that can configure the I/O in a
known state during power-up. Just shortly before VCCA
reaches 2.5 V, the resistors are disabled and the I/Os will be
controlled by user logic.
Table 1-2 describes the I/O features of eX devices. For
more information on I/Os, refer to Actel eX, SX-A, and
RT54SX-S I/Os application note.
The eX family supports mixed-voltage operation and is
designed to tolerate 5.0 V inputs in each case.
A detailed description of the I/O pins in eX devices can be
found in "Pin Description" on page 1-26.
Figure 1-7 • Fuselock
FuseLock
Table 1-2 • I/O Features
Function
Description
Input
Buffer
Threshold
Selection
5.0V TTL
3.3V LVTTL
2.5V LVCMOS2
Nominal
Output Drive
5.0V TTL/CMOS
3.3V LVTTL
2.5V LVCMOS 2
Output Buffer “Hot-Swap” Capability
I/O on an unpowered device does not sink
current
Can be used for “cold sparing”
Selectable on an individual I/O basis
Individually selectable low-slew option
Power-Up
Individually selectable pull ups and pull downs
during power-up (default is to power up in
tristate)
Enables deterministic power-up of device
VCCA and VCCI can be powered in any order


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