English
Language : 

XQ4010E-4PG191M Datasheet, PDF (25/36 Pages) Xilinx, Inc – QPRO XQ4000E/EX
◁
R
QPRO XQ4000E/EX QML High-Reliability FPGAs
XQ4028EX CLB RAM Asynchronous (Level-Sensitive) Write and Read Operation Guidelines
Testing of switching parameters is modeled after testing
methods specified by MIL-M-38510/605. All devices are
100% functionally tested. Internal timing parameters are
derived from measuring internal test patterns. Listed below
are representative values. For more specific, more precise,
and worst-case guaranteed data, use the values reported
by the static timing analyzer (TRCE in the Xilinx Develop-
ment System) and back-annotated to the simulation netlist.
All timing parameters assume worst-case operating condi-
tions (supply voltage and junction temperature). Values
apply to all XQ4000EX devices unless otherwise noted.
Symbol
Single Port RAM
Write Operation
TWC
Address write cycle time
TWCT
TWP
Write Enable pulse width (High)
TWPT
TAS
Address setup time before WE
TAST
TAH
Address hold time after end of WE
TAHT
TDS
DIN setup time before end of WE
TDST
TDH
DIN hold time after end of WE
TDHT
Read Operation
TRC
Address read cycle time
TRCT
TILO
Data valid after address change (no Write Enable)
TIHO
Read Operation, Clocking Data into Flip-Flop
TICK
Address setup time before clock K
TIHCK
Read During Write
TWO
Data valid after WE goes active (DIN stable before WE)
TWOT
TDO
Data valid after DIN (DIN changes during WE)
TDOT
Read During Write, Clocking Data into Flip-Flop
TWCK
WE setup time before clock K
TWCKT
TDCK
Data setup time before clock K
TDOCK
Notes:
1. Timing for the 16x1 RAM option is identical to 16x2 RAM timing.
Size
-4
Min Max
Units
16x2 10.6
-
ns
32x1 10.6
-
ns
16x2
5.3
-
ns
32x1
5.3
-
ns
16x2
2.8
-
ns
32x1
2.8
-
ns
16x2
1.7
-
ns
32x1
1.7
-
ns
16x2
1.1
-
ns
32x1
1.1
-
ns
16x2
6.6
-
ns
32x1
6.6
-
ns
16x2
4.5
-
ns
32x1
6.5
-
ns
16x2
-
2.2
ns
32x1
-
3.8
ns
16x2
1.5
-
ns
32x1
3.2
-
ns
16x2
-
6.5
ns
32x1
-
7.4
ns
16x2
-
7.7
ns
32x1
-
8.2
ns
16x2
7.1
-
ns
32x1
9.2
-
ns
16x2
5.9
-
ns
32x1
8.4
-
ns
DS021 (v2.2) June 25, 2000
www.xilinx.com
25
Product Specification
1-800-255-7778
 ▷