ProASIC3E Flash Family FPGAs
Revision 13
2-81
Timing Characteristics
Table 2-101 FIFO
Commercial-Case Conditions: TJ = 70掳C, VCC = 1.425 V
Parameter
Description
鈥�2
鈥�1
Std.
Units
tENS
REN, WEN Setup Time
1.38
1.57
1.84
ns
tENH
REN, WEN Hold Time
0.02
ns
tBKS
BLK Setup Time
0.19
0.22
0.26
ns
tBKH
BLK Hold Time
0.00
ns
tDS
Input Data (WD) Setup Time
0.18
0.21
0.25
ns
tDH
Input Data (WD) Hold Time
0.00
ns
tCKQ1
Clock High to New Data Valid on RD (pass-through)
2.36
2.68
3.15
ns
tCKQ2
Clock High to New Data Valid on RD (pipelined)
0.89
1.02
1.20
ns
tRCKEF
RCLK High to Empty Flag Valid
1.72
1.96
2.30
ns
tWCKFF
WCLK High to Full Flag Valid
1.63
1.86
2.18
ns
tCKAF
Clock High to Almost Empty/Full Flag Valid
6.19
7.05
8.29
ns
tRSTFG
RESET Low to Empty/Full Flag Valid
1.69
1.93
2.27
ns
tRSTAF
RESET Low to Almost Empty/Full Flag Valid
6.13
6.98
8.20
ns
tRSTBQ
RESET Low to Data Out Low on RD (pass-through)
0.92
1.05
1.23
ns
RESET Low to Data Out Low on RD (pipelined)
0.92
1.05
1.23
ns
tREMRSTB
RESET Removal
0.29
0.33
0.38
ns
tRECRSTB
RESET Recovery
1.50
1.71
2.01
ns
tMPWRSTB
RESET Minimum Pulse Width
0.21
0.24
0.29
ns
tCYC
Clock Cycle Time
3.23
3.68
4.32
ns
FMAX
Maximum Frequency
310
272
231
MHz
Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-5 for derating values. 
