EP1C4 ALTERA [Altera Corporation], EP1C4 Datasheet - Page 91
EP1C4
Manufacturer Part Number
EP1C4
Description
Cyclone FPGA Family Data Sheet
Manufacturer
ALTERA [Altera Corporation]
Datasheet
1.EP1C4.pdf
(104 pages)
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Altera Corporation
January 2007
LVCMOS
3.3-V LVTTL
2.5-V LVTTL
1.8-V LVTTL
1.5-V LVTTL
SSTL-3 class I
SSTL-3 class II
SSTL-2 class I
Table 4–40. Cyclone I/O Standard Column Pin Input Delay Adders (Part 1 of 2)
I/O Standard
External I/O Delay Parameters
External I/O delay timing parameters for I/O standard input and output
adders and programmable input and output delays are specified by
speed grade independent of device density.
Tables 4–40
and row I/O pins for all packages. If an I/O standard is selected other
than LVTTL 4 mA with a fast slew rate, add the selected delay to the
external t
4–28.
t
t
t
t
t
t
t
t
t
t
I N S U
I N H
O U T C O
X Z
Z X
I N S U P L L
I N H P L L
O U T C O P L L
X Z P L L
Z X P L L
Table 4–39. EP1C20 Row Pin Global Clock External I/O Timing Parameters
-6 Speed Grade
Min
Symbol
CO
through
and t
Max
− 250
− 250
− 278
182
278
27
-6 Speed Grade
2.417
0.000
2.000
1.417
0.000
0.500
0
0
Min
SU
I/O parameters shown in
4–45
3.724
3.645
3.645
1.667
1.588
1.588
Max
-7 Speed Grade
Min
show the adder delays associated with column
-7 Speed Grade
2.779
0.000
2.000
1.629
0.000
0.500
Min
Max
− 288
− 288
− 320
209
319
31
0
0
4.282
4.191
4.191
1.917
1.826
1.826
Max
-8 Speed Grade
Min
Tables 4–25
-8 Speed Grade
3.140
0.000
2.000
1.840
0.000
0.500
Min
Max
− 325
− 325
− 362
236
361
35
0
0
through
4.843
4.740
4.740
2.169
2.066
2.066
Max
Timing Model
Preliminary
Unit
ps
ps
ps
ps
ps
ps
ps
ps
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4–21