AC Timing Characteristics – 3.3V Operation AT40KLV
Delays are based on fixed loads and are described in the notes.
Maximum times based on worst case: VCC = 3.0V, temperature = 70°C
Minimum times based on best case: VCC = 3.6V, temperature = 0°C
Maximum delays are the average of tPDLH and tPDHL
All input IO characteristics measured from a VIH of 50% of VDD at the pad (CMOS threshold) to the internal VIH of 50% of
DD. All output IO characteristics are measured as the average of tPDLH and tPDHL to the pad VIH of 50% of VDD.
.
V
Cell Function
Parameter
Path
-3
Units
Notes
Repeaters
Repeater
Repeater
Repeater
Repeater
Repeater
Repeater
t
PD (Maximum)
L -> E
E -> E
L -> L
E -> L
E -> IO
L -> IO
2.2
2.2
2.2
2.2
1.4
1.4
ns
ns
ns
ns
ns
ns
1 unit load
1 unit load
1 unit load
1 unit load
1 unit load
1 unit load
tPD (Maximum)
t
PD (Maximum)
PD (Maximum)
t
tPD (Maximum)
PD (Maximum)
t
All input IO characteristics measured from a VIH of 50% of VDD at the pad (CMOS threshold) to the internal VIH of 50% of
DD. All output IO characteristics are measured as the average of tPDLH and tPDHL to the pad VIH of 50% of VDD.
V
Cell Function
Parameter
Path
-3
Units
Notes
IO
Input
t
t
t
PD (Maximum)
PD (Maximum)
PD (Maximum)
pad -> x/y
pad -> x/y
pad -> x/y
pad -> x/y
x/y/E/L -> pad
x/y/E/L -> pad
x/y/E/L -> pad
oe -> pad
1.9
5.8
11.5
17.4
9.1
7.6
6.2
9.5
2.1
7.4
2.7
5.9
2.4
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
No extra delay
1 extra delay
2 extra delays
3 extra delays
50 pf load
Input
Input
Input
tPD (Maximum)
Output, Slow
Output, Medium
Output, Fast
Output, Slow
Output, Slow
Output, Medium
Output, Medium
Output, Fast
Output, Fast
tPD (Maximum)
tPD (Maximum)
tPD (Maximum)
tPZX (Maximum)
tPXZ (Maximum)
50 pf load
50 pf load
50 pf load
oe -> pad
50 pf load
tPZX (Maximum)
oe -> pad
50 pf load
tPXZ (Maximum)
tPZX (Maximum)
tPXZ (Maximum)
oe -> pad
50 pf load
oe -> pad
50 pf load
oe -> pad
50 pf load
34
AT40K/AT40KLV Series FPGA
0896C–FPGA–04/02
ATMEL [ ATMEL ]
