XC3S1000-4FG676C

Manufacturer Part NumberXC3S1000-4FG676C
DescriptionFPGA Spartan®-3 Family 1M Gates 17280 Cells 630MHz 90nm Technology 1.2V 676-Pin FBGA
ManufacturerXilinx Inc
XC3S1000-4FG676C datasheets

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Specifications of XC3S1000-4FG676C

Package676FBGAFamily NameSpartan®-3
Device Logic Units17280Device System Gates1000000
Maximum Internal Frequency630 MHzTypical Operating Supply Voltage1.2 V
Maximum Number Of User I/os391Ram Bits442368
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Page 105/217

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R
Bank 0
Bank 1
Bank 5
Bank 4
DUAL Type: Dual-Purpose Configuration and
I/O Pins
These pins serve dual purposes. The user-I/O pins are tem-
porarily borrowed during the configuration process to load
configuration data into the FPGA. After configuration, these
pins are then usually available as a user I/O in the applica-
tion. If a pin is not applicable to the specific configuration
mode—controlled by the mode select pins M2, M1, and
M0—then the pin behaves as an I/O-type pin.
There are 12 dual-purpose configuration pins on every
package, six of which are part of I/O Bank 4, the other six
part of I/O Bank 5. Only a few of the pins in Bank 4 are used
in the Serial configuration modes.
See
“Pin Behavior During Configuration, page 114”.
DS099-4 (v2.5) December 4, 2009
Product Specification
Spartan-3 FPGA Family: Pinout Descriptions
IO_L38P_2
IO_L38N_2
IO_L39P_2
IO_L39N_2
Figure 38: Differential Pair Labelling
Serial Configuration Modes
This section describes the dual-purpose pins used during
either Master or Slave Serial mode. See
Select pin settings required for Serial modes. All such pins
are in Bank 4 and powered by VCCO_4.
In both the Master and Slave Serial modes, DIN is the serial
configuration data input. The D1-D7 inputs are unused in
serial mode and behave like general-purpose I/O pins.
In all the cases, the configuration data is synchronized to
the rising edge of the CCLK clock signal.
The DIN, DOUT, and INIT_B pins can be retained in the
application to support reconfiguration by setting the Persist
bitstream generation option. However, the serial modes do
not support device readback.
www.xilinx.com
Pair Number
Bank Number
Positive Polarity,
True Receiver
Negative Polarity,
Inverted Receiver
DS099-4_01_102930
Table 74
for Mode
105