Spartan-6 FPGA Data Sheet: DC and Switching Characteristics
Switching Characteristics
All values represented in this data sheet are based on these
speed specifications: v1.11 for -4, -3, and -2; and v1.04 for
-1L. Switching characteristics are specified on a per-speed-
grade basis and can be designated as Advance,
Preliminary, or Production. Each designation is defined as
follows:
The -1L speed grade refers to the lower-power Spartan-6
devices. The -3N speed grade refers to the Spartan-6
devices that do not support MCB functionality. The -3N
speed grade and -3 speed grade switching characteristics
are identical.
Table 26 correlates the current status of each Spartan-6
device on a per speed grade basis.
Advance
These specifications are based on simulations only and are
typically available soon after device design specifications
are frozen. Although speed grades with this designation are
considered relatively stable and conservative, some under-
reporting might still occur.
Table 26: Spartan-6 Device Speed Grade Designations
Speed Grade Designations
Device
Advance
-3, -2, -1L
-3, -3N,-2, -1L
-1L
Preliminary
Production
XC6SLX4
Preliminary
XC6SLX9
XC6SLX16
XC6SLX25
XC6SLX25T
XC6SLX45
XC6SLX45T
XC6SLX75
XC6SLX75T
XC6SLX100
XC6SLX100T
XC6SLX150
XC6SLX150T
-3, -3N, -2
-3, -3N, -2
These specifications are based on complete ES
(engineering sample) silicon characterization. Devices and
speed grades with this designation are intended to give a
better indication of the expected performance of production
silicon. The probability of under-reporting delays is greatly
reduced as compared to Advance data.
-1L
-4, -3, -3N, -2
-3, -3N, -2
-1L
-1L
-1L
-1L
-4, -3, -3N, -2
-3, -3N, -2
Production
-4, -3, -3N, -2
-3, -3N, -2
These specifications are released once enough production
silicon of a particular device family member has been
characterized to provide full correlation between
specifications and devices over numerous production lots.
There is no under-reporting of delays, and customers
receive formal notification of any subsequent changes.
Typically, the slowest speed grades transition to Production
before faster speed grades.
-4, -3, -3N, -2
-3, -3N, -2
-4, -3, -3N, -2
Notes:
1. Until ISE software supports the -3N speed grade option, use the
-3 speed grade option and do not use the Memory Controller
block.
All specifications are always representative of worst-case
supply voltage and junction temperature conditions.
Since individual family members are produced at different
times, the migration from one category to another depends
completely on the status of the fabrication process for each
device.
Testing of Switching Characteristics
All devices are 100% functionally tested. Internal timing parameters are derived from measuring internal test patterns. Listed
below are representative values.
For more specific, more precise, and worst-case guaranteed data, use the values reported by the static timing analyzer and
back-annotate to the simulation net list. Unless otherwise noted, values apply to all Spartan-6 devices.
DS162 (v1.9) August 23, 2010
www.xilinx.com
Advance Product Specification
17
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