XC3S502 Xilinx Corp., XC3S502 Datasheet - Page 83

• Manufacturer Part Number: XC3S502
• Description: Spartan-3 Fpga Family Complete Data Sheet
• Manufacturer: Xilinx Corp.

Table 51: CLB Distributed RAM Switching Characteristics
Table 52: CLB Shift Register Switching Characteristics
DS099-3 (v2.2) May 25, 2007
Product Specification
98
Clock-to-Output Times
Setup Times
Hold Times
Clock Pulse Width
Clock-to-Output Times
Setup Times
Hold Times
Clock Pulse Width
T
T
T
DH,
WPH
WPH
Symbol
Symbol
T
T
T
T
SHCKO
SRLDS
SRLDH
T
T
T
T
REG
WS
AH,
DS
AS
, T
, T
WPL
WPL
T
R
WH
Time from the active edge at the CLK input to data
appearing on the distributed RAM output
Setup time of data at the BX or BY input before the active
transition at the CLK input of the distributed RAM
Setup time of the F/G address inputs before the active
transition at the CLK input of the distributed RAM
Setup time of the write enable input before the active
transition at the CLK input of the distributed RAM
Hold time of the BX, BY data inputs, the F/G address
inputs, or the write enable input after the active transition
at the CLK input of the distributed RAM
Minimum High or Low pulse width at CLK input
Time from the active edge at the CLK input to data
appearing on the shift register output
Setup time of data at the BX or BY input before the active
transition at the CLK input of the shift register
Hold time of the BX or BY data input after the active
transition at the CLK input of the shift register
Minimum High or Low pulse width at CLK input
Description
Description
www.xilinx.com
Spartan-3 FPGA Family: DC and Switching Characteristics
0.46
0.46
0.33
0.85
0.46
0.85
Min
Min
0
0
-
-
-5
-5
Max
1.87
Max
3.30
-
-
-
-
-
-
-
-
0.52
0.53
0.37
0.97
0.52
0.97
Min
Min
0
0
-
-
-4
-4
Max
2.15
Max
3.79
-
-
-
-
-
-
-
-
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
83