XC4VFX20 XILINX [Xilinx, Inc], XC4VFX20 Datasheet - Page 31

• Manufacturer Part Number: XC4VFX20
• Description: DC and Switching Characteristics
• Manufacturer: XILINX [Xilinx, Inc]

CLB Distributed RAM Switching Characteristics (SLICEM Only)
)
Table 38: CLB Distributed RAM Switching Characteristics
CLB Shift Register Switching Characteristics (SLICEM Only)
)
Table 39: CLB Shift Register Switching Characteristics
DS302 (v3.2) April 10, 2008
Product Specification
Notes:
1.
2.
3.
Notes:
1.
2.
3.
Sequential Delays
Setup and Hold Times Before/After Clock CLK
Clock CLK
Sequential Delays
Setup and Hold Times Before/After Clock CLK
Clock CLK
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
A Zero “0” Hold Time listing indicates no hold time or a negative hold time. Negative values cannot be guaranteed “best-case,” but if a “0” is listed,
there is no positive hold time.
The values in this column apply to all XC4VFX -12 parts except XC4VFX12 -12. For XC4VFX12 -12 values, use the values in the adjacent
XC4VLX/SX -12 column.
T
A Zero “0” Hold Time listing indicates no hold time or a negative hold time. Negative values cannot be guaranteed “best-case,” but if a “0” is listed,
there is no positive hold time.
The values in this column apply to all XC4VFX -12 parts except XC4VFX12 -12. For XC4VFX12 -12 values, use the values in the adjacent
XC4VLX/SX -12 column.
The values in this column apply to all XC4VFX -11 parts.
AS
SHCKO
SHCKOF5
DS
WS
WPH
WPL
WC
REG
REGXB
REGYB
CKSH
REGF5
WS
DS
WPH
WPL
Symbol
SHCKO
/
/
/
/
/
T
T
T
T
T
AH
DH
DH
WH
WH
also represents the CLK to XMUX output. Refer to TRCE report for the CLK to XMUX path.
R
Clock CLK to X/Y outputs
Clock CLK to XB output via MC15 LUT output
Clock CLK to YB output via MC15 LUT output
Clock CLK to Shiftout
Clock CLK to F5 output
WE input (SR)
BX/BY data inputs (DI)
Minimum Pulse Width, High
Minimum Pulse Width, Low
Clock CLK to X outputs (WE active)
Clock CLK to F5 output (WE active)
BX/BY data inputs (DI)
F/G address inputs
WE input (SR)
Minimum Pulse Width, High
Minimum Pulse Width, Low
Minimum clock period to meet address write cycle time
Description
Description
(3)
www.xilinx.com
Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
XC4VFX
–0.76
–1.12
2.12
1.83
1.84
1.70
2.05
0.87
1.28
0.53
0.55
(2)
-12
XC4VLX/SX
–0.76
–1.11
2.08
1.73
1.74
1.60
2.01
0.85
1.25
0.52
0.54
XC4VFX
–0.90
–0.37
–0.48
1.61
1.53
1.26
0.88
1.10
0.53
0.55
0.76
Speed Grade
(2)
XC4VFX
-12
–0.70
–1.11
1.90
1.92
1.76
XC4VLX/SX
2.19
2.11
0.96
1.45
0.59
0.60
Speed Grade
–0.88
–0.37
–0.47
1.58
1.50
1.23
0.86
1.08
0.52
0.54
0.74
(3)
-11
XC4VLX/SX
–0.70
–1.11
2.19
1.84
1.85
1.70
2.11
0.96
1.45
0.59
0.60
–0.88
–0.34
–0.47
1.77
1.69
1.46
0.97
1.21
0.59
0.60
0.84
ALL DEVICES
-11
–0.88
–0.29
–0.47
–0.62
–1.11
2.08
1.98
1.80
1.13
1.42
0.69
0.70
0.98
-10
2.57
2.16
2.17
1.99
2.47
1.12
1.75
0.69
0.70
ALL
-10
ns, Max
ns, Max
ns, Max
ns, Max
ns, Max
ns, Max
ns, Max
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
ns, Min
Units
Units
31