XC3SD1800A-4CS484I Xilinx Inc, XC3SD1800A-4CS484I Datasheet - Page 23

• Manufacturer Part Number: XC3SD1800A-4CS484I
• Description: FPGA Spartan®-3A Family 1.8M Gates 37440 Cells 667MHz 90nm Technology 1.2V 484-Pin LCSBGA
• Manufacturer: Xilinx Inc

Specifications of XC3SD1800A-4CS484I

• Package: 484LCSBGA
• Family Name: Spartan®-3A
• Device Logic Units: 37440
• Device System Gates: 1800000
• Maximum Internal Frequency: 667 MHz
• Typical Operating Supply Voltage: 1.2 V
• Maximum Number Of User I/os: 309
• Ram Bits: 1548288

Table 19: Setup and Hold Times for the IOB Input Path (Cont’d)
Table 20: Sample Window (Source Synchronous)
DS610 (v3.0) October 4, 2010
Product Specification
Notes:
1.
2.
3.
T
Set/Reset Pulse Width
T
Symbol
T
Symbol
IOICKPD
RPW_IOB
SAMP
The numbers in this table are tested using the methodology presented in
Table 7
This setup time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, add the
appropriate Input adjustment from
These hold times require adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, subtract
the appropriate Input adjustment from
edge.
Setup and hold
capture window of
an IOB flip-flop.
and
Time from the active transition at the
ICLK input of the Input Flip-Flop (IFF) to
the point where data must be held at the
Input pin. The Input Delay is
programmed.
Minimum pulse width to SR control input
on IOB
Description
Table
10.
Description
The input capture sample window value is highly specific to a particular application, device,
package, I/O standard, I/O placement, DCM usage, and clock buffer. Please consult the
appropriate Xilinx Answer Record for application-specific values.
• Answer Record
Table
Table
22.
22. When the hold time is negative, it is possible to change the data before the clock’s active
30879
LVCMOS25
Conditions
Spartan-3A DSP FPGA Family: DC and Switching Characteristics
www.xilinx.com
–
(3)
Table 26
Max
DELAY_
VALUE
and are based on the operating conditions set forth in
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
–
XC3SD1800A –1.40 –1.40
XC3SD3400A –1.31 –1.31
Device
All
–2.11 –2.11
–2.48 –2.48
–2.77 –2.77
–2.62 –2.62
–3.06 –3.06
–3.42 –3.42
–3.65 –3.65
–1.88 –1.88
–2.44 –2.44
–2.89 –2.89
–2.83 –2.83
–3.33 –3.33
–3.63 –3.63
–3.96 –3.96
1.33
Min
-5
Speed
1.61
Min
-4
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
23