A1280XL Timing Characteristics (continued)
(Worst-Case Military Conditions, VCC = 4.5V, TJ = 125°C)
‘–1’ Speed
‘Std’ Speed
Parameter Description
Min.
Max.
Min.
Max.
Units
Input Module Propagation Delays
tINYH
tINYL
tINGH
tINGL
Pad to Y High
Pad to Y Low
G to Y High
G to Y Low
1.5
1.7
2.8
3.7
1.7
2.1
3.3
4.3
ns
ns
ns
ns
Input Module Predicted Routing Delays1
tRD1
tRD2
tRD3
tRD4
tRD8
FO=1 Routing Delay
FO=2 Routing Delay
FO=3 Routing Delay
FO=4 Routing Delay
FO=8 Routing Delay
4.6
5.2
5.5
6.4
9.2
5.3
6.1
ns
ns
ns
ns
ns
6.5
7.5
10.8
Global Clock Network
tCKH Input Low to High
FO = 32
FO = 384
7.1
8.0
8.4
9.5
ns
ns
tCKL
Input High to Low
FO = 32
FO = 384
7.0
8.0
8.3
9.5
tPWH
tPWL
tCKSW
tSUEXT
tHEXT
tP
Minimum Pulse Width High
Minimum Pulse Width Low
Maximum Skew
FO = 32
FO = 384
4.3
4.8
5.3
5.7
ns
FO = 32
FO = 384
4.3
4.8
5.3
5.7
ns
FO = 32
FO = 384
1.1
1.1
1.2
1.2
ns
Input Latch External Setup
Input Latch External Hold
Minimum Period
FO = 32
FO = 384
0.0
0.0
0.0
0.0
ns
FO = 32
FO = 384
3.6
4.6
4.2
5.3
ns
FO = 32
FO = 384
9.1
9.8
10.7
11.8
ns
fMAX
Note:
Maximum Frequency
FO = 32
FO = 384
110
100
90
85
MHz
1. Routing delays are for typical designs across worst-case operating conditions. These parameters should be used for estimating device
performance. Post-route timing analysis or simulation is required to determine actual worst-case performance. Post-route timing is based
on actual routing delay measurements performed on the device prior to shipment. Optimization techniques may further reduce delays by 0
to 4 ns.
34
ACTEL [ Actel Corporation ]
