Extended Spartan-3A Family Overview
DS706 (v1.1) February 2, 2011 www.xilinx.com
Product Specification 2
Extended Spartan-3A Family Features
This section describes the features of the Extended Spartan-3A family of FPGAs.
• Very low-cost, high-performance logic solution for high-
volume, cost-conscious applications
• Use fewer standard components
• Increase system reliability
• Flexible power management
• Low 1.2V core voltage
• Selectable I/O voltage with 3.3V, 2.5V, 1.8V, 1.5V,
and 1.2V signaling
• Full 3.3V ±10% compatibility and hot swap
compliance
• Dual-range auxiliary voltage allows 3.3V setting to
simplify 3.3V-only design
• Suspend and hibernate modes reduce system power
• Leading connectivity platform
• Multi-standard SelectIO™ interface pins support
most popular and emerging signaling standards
• Up to 519 I/O pins or 227 differential signal pairs
• LVCMOS, LVTTL, HSTL, SSTL single-ended I/O
• Selectable output drive, up to 24 mA per pin
• QUIETIO standard reduces I/O switching noise
• 640+ Mb/s data transfer rate per differential I/O
• LVDS, RSDS, mini-LVDS, HSTL/SSTL differential
I/O with integrated differential termination resistors
• Enhanced Double Data Rate (DDR) support
• Compliant to 32-/64-bit, 33/66 MHz PCI™ technology
• Abundant, flexible logic resources
• Densities up to 53,712 logic cells, including
optional shift register or distributed RAM support
• Efficient wide multiplexers and wide logic improve
performance and density
• Fast look-ahead carry logic
• IEEE 1149.1/1532 JTAG programming/debug port
• Dedicated resources for high-speed digital signal
processing applications
• 18-bit by 18-bit multiplier with optional pipeline
• 250 MHz XtremeDSP™ DSP48A block in the
largest two devices
-48-bit accumulator for multiply-accumulate
(MAC) operation
-Integrated 18-bit pre-adder for multiply or
multiply-add operation
-Optional cascaded Multiply or MAC
-Fills the DSP performance gap between DSP
processors and high-end custom solutions
• Precise clock management with 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)
• Integrated flash memory in Spartan-3AN devices
• Up to 16 Mb of internal flash for configuration and
application storage
• Up to 11 Mb of user storage available for
embedded processing, code shadowing, or
scratchpad memory
• Enables single-chip board designs for space-
conscious applications
• Enhanced design security with flash memory
protection and security register
• Eight low-skew global clock networks, eight additional
clocks per half device, plus abundant low-skew routing
• Hierarchical SelectRAM memory architecture
• Up to 2.2 Mb of fast block RAM with byte write
enables for processor applications
• Up to 373 Kb of efficient distributed RAM
• External DDR/DDR2 SDRAM support up to
400 Mb/s
• Configuration interface to industry-standard PROMs
• Low-cost, space-saving SPI serial flash PROM
• x8 or x8/x16 parallel NOR flash PROM
• Low-cost Xilinx Platform Flash with JTAG
• Load multiple bitstreams under FPGA control with
MultiBoot capability
• Complete Xilinx ISE and free WebPACK development
system software support
• Industry’s most comprehensive IP library
•MicroBlaze and PicoBlaze embedded processors
• Integrate soft processor into FPGA to reduce Bill of
Materials
• Reduce obsolescence risks with soft processors
• Low-cost QFP and BGA packaging, Pb-free options
• Common footprints support easy density migration
• Low-cost starter kits from Xilinx, distributors, and third
parties
• Complete starter kits designed for cost-sensitive,
high-volume applications with design examples
•XA versions available for Automotive applications