XCS05XL Xilinx, XCS05XL Datasheet - Page 46

• Manufacturer Part Number: XCS05XL
• Description: Spartan and Spartan-XL Families Field Programmable Gate Arrays
• Manufacturer: Xilinx

Spartan and Spartan-XL Families Field Programmable Gate Arrays
Spartan CLB RAM Synchronous (Edge-Triggered) Write Operation Guidelines (continued)
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
Dual-Port RAM Synchronous (Edge-Triggered) Write Operation Characteristics
Spartan CLB RAM Synchronous (Edge-Triggered) Write Timing
Single Port
46
Notes:
1.
DATA OUT
Write Operation
ADDRESS
WCLK (K)
DATA IN
Symbol
T
T
T
T
T
T
T
T
T
Read Operation timing for 16 x 1 dual-port RAM option is identical to 16 x 2 single-port RAM timing
WODS
WCDS
WPDS
AHDS
WSDS
WHDS
ASDS
DSDS
DHDS
WE
T
Clock K pulse width (active edge)
Address setup time before clock K
Address hold time after clock K
DIN setup time before clock K
DIN hold time after clock K
WE setup time before clock K
WE hold time after clock K
Data valid after clock K
Address write cycle time (clock K period)
ILO
T
T
T
WSS
DSS
ASS
T
WOS
OLD
Dual Port RAM
T
WPS
T
T
T
NEW
AHS
WHS
DHS
www.xilinx.com
1-800-255-7778
T
ILO
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 Spartan devices and are expressed in nanosec-
onds unless otherwise noted.
DATA OUT
ADDRESS
WCLK (K)
DATA IN
Dual Port
WE
Size
16x1
16x1
16x1
16x1
16x1
16x1
16x1
16x1
16x1
T
ILO
(1)
Min
8.0
4.0
1.5
1.5
1.5
0
0
0
-
T
T
T
DSDS
ASDS
WSDS
DS060 (v1.6) September 19, 2001
-4
Max
T
6.5
WODS
-
-
-
-
-
-
-
-
OLD
11.6
Min
Product Specification
5.8
2.1
1.6
1.6
0
0
0
-
-3
T
WPDS
Max
7.0
T
T
T
-
-
-
-
-
-
-
-
NEW
WHDS
AHDS
T
DHDS
DS060_34_011300
ILO
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
R