Altera Corporation
5–37
April 2011
Stratix II Device Handbook, Volume 1
DC & Switching Characteristics
tCLKL
Minimum clock low
time
1,190
1,249
1,368
1,594
ps
tCLKH
Minimum clock high
time
1,190
1,249
1,368
1,594
ps
(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.
Table 5–40. M512 Block Internal Timing Microparameters (Part 1 of 2)
Symbol
Parameter
-3 Speed
-3 Speed
-4 Speed
Grade
-5 Speed
Grade
Unit
Min
Max
Min
Max
Min
Max
Min
Max
tM512 RC
Synchronous read cycle
time
2,089
2,318
2,089
2.433
1,989
2,089
2,664
2,089
3,104
ps
tM512 WERESU
Write or read enable
setup time before clock
22
23
25
29
ps
tM512 WEREH
Write or read enable
hold time after clock
203
213
233
272
ps
tM512 DATASU
Data setup time before
clock
22
23
25
29
ps
tM512 DATAH
Data hold time after
clock
203
213
233
272
ps
tM512WADDRSU Write address setup
time before clock
22
23
25
29
ps
tM512 WADDRH
Write address hold time
after clock
203
213
233
272
ps
tM512 RADDRSU Read address setup
time before clock
22
23
25
29
ps
tM512 RADDRH
Read address hold time
after clock
203
213
233
272
ps
Table 5–39. DSP Block Internal Timing Microparameters (Part 2 of 2)
Symbol
Parameter
-3 Speed
Grade (1)
-3 Speed
Grade (2)
-4 Speed
Grade
-5 Speed
Grade
Unit
Min
(3)
Max
Min
(3)
Max
Min
(4)
Max
Min
(3)
Max