A1240A 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
4.0
3.6
6.9
6.6
4.7
4.3
8.1
7.7
ns
ns
ns
ns
Input Module Predicted Routing Delays1
tIRD1
tIRD2
tIRD3
tIRD4
tIRD8
FO=1 Routing Delay
FO=2 Routing Delay
FO=3 Routing Delay
FO=4 Routing Delay
FO=8 Routing Delay
5.8
6.7
6.9
7.8
ns
ns
ns
ns
ns
7.5
8.8
8.2
9.7
10.9
12.9
Global Clock Network
tCKH Input Low to High
FO = 32
FO = 256
13.3
16.3
15.7
19.2
ns
ns
tCKL
Input High to Low
FO = 32
FO = 256
13.3
16.5
15.7
19.5
tPWH
tPWL
tCKSW
tSUEXT
tHEXT
tP
Minimum Pulse Width High
Minimum Pulse Width Low
Maximum Skew
FO = 32
FO = 256
5.7
6.0
6.7
7.1
ns
FO = 32
FO = 256
5.7
6.0
6.7
7.1
ns
FO = 32
FO = 256
0.6
3.1
0.6
3.1
ns
Input Latch External Setup
Input Latch External Hold
Minimum Period
FO = 32
FO = 256
0.0
0.0
0.0
0.0
ns
FO = 32
FO = 256
8.6
13.8
8.6
13.8
ns
FO = 32
FO = 256
11.5
12.2
13.5
14.3
ns
fMAX
Note:
Maximum Frequency
FO = 32
FO = 256
87
82
74
70
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.
28
ACTEL [ Actel Corporation ]
