R
QPRO Series Configuration PROMs (XQ) including Radiation-Hardened Series (XQR)
AC Characteristics Over Operating Condition When Cascading
RESET/OE
CE
CLK
T
CDF
Last Bit
First Bit
DATA
CEO
T
T
OOE
OCK
T
OCE
T
OCE
DS027_04_021500
Symbol
Description
Min
Max
50
Units
ns
(2,3)
T
CLK to data float delay
-
-
-
-
CDF
OCK
OCE
OOE
(3)
T
T
CLK to CEO delay
30
ns
(3)
CE to CEO delay
35
ns
(3)
T
RESET/OE to CEO delay
30
ns
Notes:
1. AC test load = 50 pF
2. Float delays are measured with 5 pF AC loads. Transition is measured at ±200 mV from steady state active levels.
3. Guaranteed by design, not tested.
4. All AC parameters are measured with V = 0.0V and V = 3.0V.
IL
IH
DS062 (v3.0) February 8, 2000
www.xilinx.com
9
Preliminary Product Specification
1-800-255-7778
XILINX [ XILINX, INC ]
