Spartan-3E FPGA Family: Functional Description
Revision
Date
Version
03/16/2007
3.5
Added information about new Spartan-3 Generation user guides (Design Documentation Available).
Added cross-references to UG331: Spartan-3 Generation FPGA User Guide and to UG332: Spartan-3
Generation Configuration User Guide. Added note about possible JTAG configuration issues when the
FPGA mode pins are set for Master mode and using software prior to ISE 9.1.01i (JTAG Mode).
Removed a few lingering references to “weak” pull-up resistors, including in Figure 12. Removed
vestigial references regarding the LDC[2:0] and HDC pins during Slave Parallel Mode configuration.
These pins are not used in this configuration mode.
05/29/2007
04/18/2008
08/26/2009
3.6
3.7
3.8
Added information about HSWAP and PCI differences between steppings to Table 71. Removed
“Performance Differences between Global Buffers” to match improved specs in Module 3. Updated
PROG_B pulse width descriptions to match specification in Module 3.
Corrected Figure 6 to show six taps and updated associated text. Added note for recommended pull-up
on DONE in Table 55 and elsewhere. Added a caution regarding Persist of pins A20-A23. Updated
Stepping description in Table 71 to note that only Stepping 1 is in production today. Updated links.
Added a frequency limitation to Equation 6. Added a new Equation 7 with a frequency limitation. Added
a Spread Spectrum, page 57 paragraph. Added Table 42, page 61. Updated a Flash vendor name in
Table 61, page 89. Removed the < symbol from the flash read access times in Table 62, page 89.
Revised the first paragraph in Configuration Sequence, page 102. Revised the first paragraph in
Power-On Behavior, page 111. Revised the second paragraph in Production Stepping, page 112.
Revised the first paragraph in Ordering a Later Stepping, page 112.
10/29/2012
4.0
Added Notice of Disclaimer. This product is not recommended for new designs.
Updated the design note section in VARIABLE Phase Shift Mode. Added the VQ100 to the Quadrant
Clock Routing section.
07/19/2013
12/14/2018
4.1
4.2
Removed banner. This product IS recommended for new designs.
Updated for Lead-Frame Plating Composition Change For Legacy Eutectic Products (XCN18024).
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VEHICLE, UNLESS THERE IS A FAIL-SAFE OR REDUNDANCY FEATURE (WHICH DOES NOT INCLUDE USE OF SOFTWARE IN
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