DC & Switching Characteristics
Table 5–41. M4K Block Internal Timing Microparameters (Part 2 of 2) Note (1)
-3 Speed
Grade (2)
-3 Speed
Grade (3)
-4 Speed
Grade
-5 Speed
Grade
Symbol
Parameter
Unit
Min
(4)
Min
(4)
Min
(5)
Min
(4)
Max
Max
Max
Max
tM4KDATAASU
tM4KDATAAH
A port data setup time
before clock
22
23
25
25
29
ps
ps
ps
ps
ps
ps
ps
ps
ps
A port data hold time
after clock
203
22
213
23
233
233
272
29
tM4KADDRASU A port address setup
time before clock
25
25
tM4KADDRAH
tM4KDATABSU
tM4KDATABH
A port address hold time 203
after clock
213
23
233
233
272
29
B port data setup time
before clock
22
203
22
25
25
B port data hold time
after clock
213
23
233
233
272
29
tM4KRADDRBSU B port address setup
time before clock
25
25
tM4KRADDRBH B port address hold time 203
after clock
213
334
233
233
272
334
tM4KDATACO1
Clock-to-output delay
when using output
registers
334
524
549
319
334
601
701
tM4KDATACO2
(6)
Clock-to-output delay
without output registers
1,616 2,453 1,616 2,574 1,540 2,820 1,616 3,286 ps
1,616
tM4KCLKH
tM4KCLKL
tM4KCLR
Minimum clock high time 1,250
1,312
1,312
151
1,437
1,437
1,675
1,675
192
ps
ps
ps
Minimum clock low time 1,250
1,437
1,437
Minimum clear pulse
width
144
165
165
Notes to Table 5–41:
(1) FMAX of M4K Block obtained using the Quartus II software does not necessarily equal to 1/TM4KRC.
(2) These numbers apply to -3 speed grade EP2S15, EP2S30, EP2S60, and EP2S90 devices.
(3) These numbers apply to -3 speed grade EP2S130 and EP2S180 devices.
(4) 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.
(5) 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.
(6) Numbers apply to unpacked memory modes, true dual-port memory modes, and simple dual-port memory modes
that use locally routed or non-identical sources for the A and B port registers.
Altera Corporation
April 2011
5–39
Stratix II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
