IDT7201L/7201LA/7202LACMOSASYNCHRONOUSFIFO
256 x 9, 512 x 9 and 1,024 x 9
COMMERCIAL,INDUSTRIALANDMILITARY
TEMPERATURERANGES
tRSC
tRS
RS
W
tRSR
tRSS
tRSS
R
tEFL
EF
tHFH , tFFH
HF, FF
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NOTES:
1. EF, FF, HF may change status during Reset, but flags will be valid at tRSC.
2. W and R = VIH around the rising edge of RS.
Figure 2. Reset
tRC
tRPW
tRR
tA
tA
R
tDV
tRHZ
tRLZ
Q0-Q8
DATA OUT VALID
DATA OUT VALID
tWC
tWPW
tWR
W
tDS
tDH
D0-D8
DATA IN VALID
DATA IN VALID
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Figure 3. Asynchronous Write and Read Operation
FIRST
WRITE
LAST WRITE
IGNORED
WRITE
FIRST READ
ADDITIONAL
READS
R
W
t
WFF
t
RFF
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FF
Figure 4. Full Flag From Last Write to First Read
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