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| CY7C419_09 Datasheet, PDF (7/17 Pages) Cypress Semiconductor – 256/512/1K/2K/4K x 9 Asynchronous FIFO | |||
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CY7C419/21/25/29/33
Switching Waveforms
R
Figure 4. Asynchronous Read and Write
tRC
tA
tRR
tPR
tA
Q0âQ 8
W
tLZR
tPW
tDVR
DATA VALID
tWC
tWR
tHZR
DATA VALID
D0âD 8
tSD
tHD
DATA VALID
DATA VALID
MR
R, W[11]
EF
HF
FF
HALF FULL
W
Figure 5. Master Reset
tMRSC[12]
tPMR
tEFL
tHFH
tFFH
tRPW
tWPW
tRMR
Figure 6. Half-full Flag
HALF FULL+1
R
tWHF
HF
HALF FULL
tRHF
Notes
11. W and R ⥠VIH around the rising edge of MR
12. tMRSC = tPMR + tRMR.
Document #: 38-06001 Rev. *C
Page 7 of 17
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