DS681 Datasheet, PDF (1/56 Pages) Xilinx, Inc – Fast look-ahead carry logic

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DS681 (v1.1) February 3, 2009
Summary
The Xilinx Automotive (XA) Spartan^®-3A family of FPGAs
solves the design challenges in most high-volume,
cost-sensitive, I/O-intensive automotive electronics
applications. The four-member family offers densities
ranging from 200,000 to 1.4 million system gates, as shown
in Table 1.
Introduction
XA devices are available in both extended-temperature
Q-Grade (–40°C to +125°C T_J) and I-Grade (–40°C to
+100°C T_J) and are qualified to the industry recognized
AEC-Q100 standard.
The XA Spartan-3A family builds on the success of the
earlier XA Spartan-3E and XA Spartan-3 FPGA families by
increasing the amount of I/O per logic, significantly reducing
the cost per I/O. New features improve system performance
and reduce the cost of configuration. These XA Spartan-3A
family enhancements, combined with proven 90 nm process
technology, deliver more functionality and bandwidth per
dollar than ever before, setting the new standard in the
programmable logic industry.
Because of their exceptionally low cost, XA Spartan-3A
FPGAs are ideally suited to a wide range of automotive
electronics applications, including infotainment, driver
information, and driver assistance modules.
The XA Spartan-3A family is a superior alternative to mask
programmed ASICs. FPGAs avoid the high initial mask set
costs and lengthy development cycles, while also permitting
design upgrades in the field with no hardware replacement
necessary because of its inherent programmability, an
impossibility with conventional ASICs and ASSPs with their
inflexible architecture.
Features
• Very low cost, high-performance logic solution for
high-volume, cost-conscious applications
• Dual-range V_CCAUX supply simplifies 3.3V-only design
• Suspend, Hibernate modes reduce system power
• Multi-voltage, multi-standard SelectIO™ interface pins
♦ Up to 375 I/O pins or 165 differential signal pairs
♦ LVCMOS, LVTTL, HSTL, and SSTL single-ended I/O
♦ 3.3V, 2.5V, 1.8V, 1.5V, and 1.2V signaling
♦ Selectable output drive, up to 24 mA per pin
♦ QUIETIO standard reduces I/O switching noise
♦ Full 3.3V ± 10% compatibility and hot swap compliance
♦ 640+ Mb/s data transfer rate per differential I/O
XA Spartan-3A Automotive
FPGA Family Data Sheet
Product Specification
♦ LVDS, RSDS, mini-LVDS, HSTL/SSTL differential I/O
with integrated differential termination resistors
♦ Enhanced Double Data Rate (DDR) support
♦ DDR/DDR2 SDRAM support up to 266 Mb/s
♦ Fully compliant 32-/64-bit, 33 MHz PCI™ technology
support
• Abundant, flexible logic resources
♦ Densities up to 25,344 logic cells, including optional shift
register or distributed RAM support
♦ Efficient wide multiplexers, wide logic
♦ Fast look-ahead carry logic
♦ Enhanced 18 x 18 multipliers with optional pipeline
♦ IEEE 1149.1/1532 JTAG programming/debug port
• Hierarchical SelectRAM™ memory architecture
♦ Up to 576 Kbits of fast block RAM with byte write enables
for processor applications
♦ Up to 176 Kbits of efficient distributed RAM
• Up to eight Digital Clock Managers (DCMs)
♦ Clock skew elimination (delay locked loop)
♦ Frequency synthesis, multiplication, division
♦ High-resolution phase shifting
♦ Wide frequency range (5 MHz to over 320 MHz)
• Eight low-skew global clock networks, eight additional
clocks per half device, plus abundant low-skew routing
• Configuration interface to industry-standard PROMs
♦ Low-cost, space-saving SPI serial Flash PROM
♦ x8 or x8/x16 parallel NOR Flash PROM
♦ Unique Device DNA identifier for design authentication
• Complete Xilinx ISE^® and WebPACK™ software
support plus Spartan-3A Starter Kit
• MicroBlaze™ and PicoBlaze™ embedded processor
cores
• BGA packaging, Pb-free ONLY
♦ Common footprints support easy density migration
Refer to the Spartan-3A FPGA Family Data Sheet (DS529)
for a full product description, AC and DC specifications, and
package pinout descriptions. Any values shown specifically
in this XA Spartan-3A Automotive FPGA Family data sheet
override those shown in DS529.
For information regarding reliability qualification, refer to
RPT103 (Xilinx Spartan-3A Family Automotive Qualification
Report) and RPT070 (Spartan-3A Commercial Qualification
Report).
© 2008–2009 Xilinx, Inc. XILINX, the Xilinx logo, Virtex, Spartan, ISE, and other designated brands included herein are trademarks of Xilinx in the United States and other
countries. PCI, PCIe, and PCI Express are trademarks of PCI-SIG and used under license. All other trademarks are the property of their respective owners.
DS681 (v1.1) February 3, 2009
www.xilinx.com
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Product Specification