AFS090 datasheet(85/334 Pages) MICROSEMI

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Fusion Family of Mixed Signal FPGAs

R e visio n 2

2 - 69

Timing Characteristics

Table 2-31 • RAM4K9

Commercial Temperature Range Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V

Parameter

Description

–2

–1

Std.

Units

tAS

Address setup time

0.25 0.28 0.33

tAH

Address hold time

0.00 0.00 0.00

tENS

REN, WEN setup time

0.14 0.16 0.19

tENH

REN, WEN hold time

0.10 0.11

0.13

tBKS

BLK setup time

0.23 0.27 0.31

tBKH

BL hold time

0.02 0.02 0.02

tDS

Input data (DIN) setup time

0.18 0.21 0.25

tDH

Input data (DIN) hold time

0.00 0.00 0.00

tCKQ1

Clock High to new data valid on DOUT (output retained, WMODE = 0)

1.79 2.03 2.39

Clock High to new data valid on DOUT (flow-through, WMODE = 1)

2.36 2.68 3.15

tCKQ2

Clock High to new data valid on DOUT (pipelined)

0.89 1.02 1.20

tC2CWWH1

Address collision clk-to-clk delay for reliable write after write on same

address—Applicable to Rising Edge

0.30 0.26 0.23

tC2CRWH1

Address collision clk-to-clk delay for reliable read access after write on

same address—Applicable to Opening Edge

0.45 0.38 0.34

tC2CWRH1

Address collision clk-to-clk delay for reliable write access after read on

same address— Applicable to Opening Edge

0.49 0.42 0.37

tRSTBQ

RESET Low to data out Low on DOUT (flow-through)

0.92 1.05 1.23

RESET Low to Data Out Low on DOUT (pipelined)

0.92 1.05 1.23

tREMRSTB

RESET removal

0.29 0.33 0.38

tRECRSTB

RESET recovery

1.50 1.71 2.01

tMPWRSTB

RESET minimum pulse width

0.21 0.24 0.29

tCYC

Clock cycle time

3.23 3.68 4.32

FMAX

Maximum frequency

310

272

231

MHz

Notes:

1. For more information, refer to the application note

Simultaneous Read-Write Operations in Dual-Port SRAM for Flash-

Based cSoCs and FPGAs.

2. For the derating values at specific junction temperature and voltage supply levels, refer to Table 3-7 on page 3-9.

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