ProASIC3 DC and Switching Characteristics
2-106 Revision 13
Table 2-123 • A3P250 FIFO 4k×1
Worst Commercial-Case Conditions: T
J
= 70°C, VCC = 1.425 V
Parameter Description –2 –1 Std. Units
t
ENS
REN, WEN Setup Time 4.86 5.53 6.50 ns
t
ENH
REN, WEN Hold Time 0.00 0.00 0.00 ns
t
BKS
BLK Setup Time 0.19 0.22 0.26 ns
t
BKH
BLK Hold Time 0.00 0.00 0.00 ns
t
DS
Input Data (WD) Setup Time 0.18 0.21 0.25 ns
t
DH
Input Data (WD) Hold Time 0.00 0.00 0.00 ns
t
CKQ1
Clock High to New Data Valid on RD (flow-through) 2.36 2.68 3.15 ns
t
CKQ2
Clock High to New Data Valid on RD (pipelined) 0.89 1.02 1.20 ns
t
RCKEF
RCLK High to Empty Flag Valid 1.72 1.96 2.30 ns
t
WCKFF
WCLK High to Full Flag Valid 1.63 1.86 2.18 ns
t
CKAF
Clock High to Almost Empty/Full Flag Valid 6.19 7.05 8.29 ns
t
RSTFG
RESET Low to Empty/Full Flag Valid 1.69 1.93 2.27 ns
t
RSTAF
RESET Low to Almost Empty/Full Flag Valid 6.13 6.98 8.20 ns
t
RSTBQ
RESET Low to Data Out Low on DO (pass-through) 0.92 1.05 1.23 ns
RESET Low to Data Out Low on DO (pipelined) 0.92 1.05 1.23 ns
t
REMRSTB
RESET Removal 0.29 0.33 0.38 ns
t
RECRSTB
RESET Recovery 1.50 1.71 2.01 ns
t
MPWRSTB
RESET Minimum Pulse Width 0.21 0.24 0.29 ns
t
CYC
Clock Cycle Time 3.23 3.68 4.32 ns
F
MAX
Maximum Frequency 310 272 231 MHz