atf280e ATMEL Corporation, atf280e Datasheet - Page 39

• Manufacturer Part Number: atf280e
• Description: Rad Hard Reprogrammable Fpga
• Manufacturer: ATMEL Corporation

12.4
7750A–AERO–07/07
Cell Function
IO
Input
Input
Input
Input
Output, slow
Output, medium
Output, fast
Output, slow
Output, slow
Output, medium
Output, medium
Output, fast
Output, fast
Cell Function
Global Clocks and Set/Reset
GCK Input buffer
FCK Input buffer
Clock column driver
Clock sector driver
GSRN Input buffer
AC Timing Characteristics - TBD
Symbol
Vi
Vidth
Tp
Tskew
Parameter
Input voltage range
Input differential voltage
Propagation delay
Duty cycle distortion
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
t
Parameter
t
t
t
t
t
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
Table 12-4.
All input I/O characteristics measured from V
internal V
All output I/O characteristics are measured as the average of T
50% of V
Clocks and Reset Input buffers are measured from a V
V
Maximum times for clock input buffers and internal drivers are measured for rising edge delays
only.
Table 12-5.
IH
of 50% of V
DD
IH
.
of 50% of V
LVDS Receiver DC/ AC Characteristics
AC Characteristics
CC
Path
pad -> x/y
pad -> x/y
pad -> x/y
pad -> x/y
Output, fast
Output, fast
Output, fast
oe -> pad
oe -> pad
oe -> pad
oe -> pad
oe -> pad
oe -> pad
Path
pad -> clock
pad -> clock
clock -> colclk
colclk -> secclk
colclk -> secclk
.
Test Condition
–
–
Cout = 50 pF, VDD = 3.3V ± 0.3V
Cout = 50 pF
DD
.
Value
Value
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
IH
of 50% of V
Notes
no extra delay
1 extra delay
2 extra delays
3 extra delays
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
40 pF load
Notes
rising edge clock
rising edge clock
rising edge clock
rising edge clock
from any pad to Global Set/Reset network
IH
Min.
0
-100
0.7
-
of 1.5V at the input pad to the internal
DD
at the pad (CMOS threshold) to the
PDLH
Max.
2400
+100
2.4
500
and T
Units
mV
mV
ns
ps
PDHL
ATF280E
to the pad V
Comments
–
–
–
–
IH
39
of