![](http://datasheet.mmic.net.cn/370000/OR2T04A-2PS84_datasheet_16726875/OR2T04A-2PS84_143.png)
Data Sheet
June 1999
ORCA Series 2 FPGAs
Lucent Technologies Inc.
143
Timing Characteristics
(continued)
Table 38A. OR2CxxA and OR2TxxA Asynchronous Memory Read During Write, Clocking Data into Latch/
Flip-Flop (MA/MB Modes)
Note: Speed grades of -5, -6, and -7 are for OR2TxxA devices only.
Table 38B. OR2TxxB Asynchronous Memory Read During Write, Clocking Data into Latch/Flip-Flop
(MA/MB Modes)
OR2CxxA Commercial: V
DD
= 5.0 V ± 5%, 0 °C
≤
T
A
≤
70 °C; OR2CxxA Industrial: V
DD
= 5.0 V ± 10%, –40 °C
≤
T
A
≤
+85 °C.
OR2TxxA Commercial: V
DD
= 3.0 V to 3.6 V, 0 °C
≤
T
A
≤
70 °C; OR2TxxA Industrial: V
DD
= 3.0 V to 3.6 V, –40 °C
≤
T
A
≤
+85
°C.
Parameter
Symbol
Speed
Unit
-2
-3
-4
-5
-6
-7
Min
Max
Min Max
Min
Max
Min
Max
Min
Max
Min
Max
Setup Time (TJ = 85 °C, V
DD
= min):
Address to Clock (A[3:0], B[3:0] to CK)
Write Enable (WREN) to Clock (A4/B4 to CK)
Write-port Enable (WPE) to Clock (C0 to CK)
Data (WD[3:0] to CK)
Hold Time (TJ = All, V
DD
= All): All
Clock to PFU Out (CK to Q[3:0])—Register
MEM*_ASET
MEM*_WRSET
MEM*_PWRSET
MEM*_DSET
TH
REG_DEL
2.4
5.4
7.4
3.5
0.0
—
—
—
—
—
—
2.4
1.8
4.4
5.9
2.6
0.0
—
—
—
—
—
—
2.0
1.2
3.8
4.8
2.6
0.0
—
—
—
—
—
—
1.9
1.1
3.4
4.3
2.3
0.0
—
—
—
—
—
—
1.5
1.0
3.1
4.0
2.2
0.0
—
—
—
—
—
—
1.3
1.0
3.0
3.9
2.1
0.0
—
—
—
—
—
—
1.0
ns
ns
ns
ns
ns
ns
OR2TxxB Commercial: V
DD
= 3.0 V to 3.6 V, 0 °C
≤
T
A
≤
70 °C; OR2TxxB Industrial: V
DD
= 3.0 V to 3.6 V, –40 °C
≤
T
A
≤
+85
°C.
Parameter
Symbol
Speed
Unit
-7
-8
Min
Max
Min
Max
Setup Time (T
J
= 85 °C, V
DD
= min):
Address to Clock (A[3:0], B[3:0] to CK)
Write Enable (WREN) to Clock (A4/B4 to CK)
Write-port Enable (WPE) to Clock (C0 to CK)
Data (WD[3:0] to CK)
Hold Time (T
J
= all, V
DD
= all): All
Clock to PFU Out (CK to Q[3:0])—Register
MEM*_ASET
MEM*_WRSET
MEM*_PWRSET
MEM*_DSET
TH
REG_DEL
0.9
2.9
3.7
2.0
0.0
—
—
—
—
—
—
1.0
0.8
2.5
3.2
1.7
0.0
—
—
—
—
—
—
1.0
ns
ns
ns
ns
ns
ns