XC4VFX140 XILINX [Xilinx, Inc], XC4VFX140 Datasheet - Page 36

• Manufacturer Part Number: XC4VFX140
• Description: Platform Flash In-System Programmable Configuration PROMS
• Manufacturer: XILINX [Xilinx, Inc]

AC Characteristics Over Operating Conditions When Cascading
DS123 (v2.9) May 09, 2006
Notes:
1.
2.
3.
4.
5.
6.
T
T
T
T
T
T
CDF
OCK
OCE
OOE
COCE
CODF
Symbol
AC test load = 50 pF for XCF01S/XCF02S/XCF04S; 30 pF for XCF08P/XCF16P/XCF32P.
Float delays are measured with 5 pF AC loads. Transition is measured at ±200 mV from steady state active levels.
Guaranteed by design, not tested.
All AC parameters are measured with V
For cascaded PROMs, if the FPGA’s dual-purpose configuration data pins are set to persist as configuration pins, the minimum
period is increased based on the CLK to CEO and CE to data propagation delays:
- T
- T
For cascaded PROMs, if the FPGA’s dual-purpose configuration data pins become general I/O pins after configuration; to allow for
the disable to propagate to the cascaded PROMs and to avoid contention on the data lines following configuration, the minimum
period is increased based on the CE to CEO and CE to data propagation delays:
- T
- T
CYC
CAC
CYC
CAC
maximum = T
maximum = T
minimum = T
minimum = T
OE/RESET
R
CLK to output float delay
when V
CLK to output float delay
CLK to CEO delay
CLK to CEO delay
CE to CEO delay
CE to CEO delay
OE/RESET to CEO delay
OE/RESET to CEO delay
CLKOUT to CEO delay when V
CLKOUT to CEO delay when V
CLKOUT to output float delay
when V
CLKOUT to output float delay when V
(optional)
CLKOUT
DATA
CEO
CLK
CE
CCO
CCO
OCK
OCE
OCK
OCK
= 2.5V or 3.3V
= 2.5V or 3.3V
+ T
+ T
+ T
+ T
(3,6)
(3,6)
(3,5)
(3,5)
CE
CE
CE
CE
Description
when V
when V
+ FPGA Data setup time.
when V
when V
(2,3)
(2,3)
(3)
(3)
when V
when V
when V
CCO
CCO
Last Bit
IL
CCO
CCO
CCO
CCO
= 0.0V and V
= 2.5V or 3.3V
= 1.8V
= 2.5V or 3.3V
= 1.8V
= 2.5V or 3.3V
= 1.8V
CCO
CCO
CCO
CCO
= 2.5V or 3.3V
= 1.8V
= 1.8V
= 1.8V
IH
www.xilinx.com
Platform Flash In-System Programmable Configuration PROMS
T
T
T
T
= 3.0V.
CDF
CODF
OCK
COCE
XCF01S, XCF02S,
Min
–
–
–
–
–
–
–
–
–
–
–
–
XCF04S
Max
25
35
20
35
20
35
20
35
–
–
–
–
T
T
OCE
OOE
XCF08P, XCF16P,
Min
–
–
–
–
–
–
–
–
–
–
–
–
XCF32P
ds123_23_102203
First Bit
Max
20
20
20
20
80
80
80
80
20
20
25
25
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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