EP2S180F1020C4 Datasheet, PDF (180/768 Pages) Altera Corporation – Stratix II Device Handbook, Volume 1

Timing Model
Internal Timing Parameters
See Tables 5–37 through 5–42 for internal timing parameters.
Table 5–37. LE_FF Internal Timing Microparameters
Symbol
Parameter
-3 Speed
Grade (1)
Min
(3)
Max
t_{S U}
LE register setup time before 90
clock
t_H
LE register hold time after clock 149
t_{C O}
LE register clock-to-output
delay
t_{C L R}
Minimum clear pulse width
62 94
204
t_{P R E}
Minimum preset pulse width
204
t_{C L K L} Minimum clock low time
612
t_{C L K H} Minimum clock high time
612
t_{L U T}
162 378
t_{A D D E R}
354 619
-3 Speed
Grade (2)
Min
(3)
Max
95
157
62 99
214
214
642
642
162 397
354 650
-4 Speed
Grade
Min
(4)
Max
104
104
172
172
59 109
62
234
234
234
234
703
703
703
703
162 435
170
354 712
372
-5 Speed
Grade
Unit
Min
(3)
Max
121
ps
200
ps
62 127 ps
273
ps
273
ps
820
ps
820
ps
162 507 ps
354 829 ps
Notes to Table 5–37:
(1) These numbers apply to -3 speed grade EP2S15, EP2S30, EP2S60, and EP2S90 devices.
(2) These numbers apply to -3 speed grade EP2S130 and EP2S180 devices.
(3) For the -3 and -5 speed grades, the minimum timing is for the commercial temperature grade. Only -4 speed grade
devices offer the industrial temperature grade.
(4) For the -4 speed grade, the first number is the minimum timing parameter for industrial devices. The second
number is the minimum timing parameter for commercial devices.
5–34
Stratix II Device Handbook, Volume 1
Altera Corporation
April 2011