CY7C421-20JXI 데이터 시트보기 (PDF) - Cypress Semiconductor
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CY7C421-20JXI Datasheet PDF : 21 Pages
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CY7C421
Switching Waveforms
R
Figure 5. Asynchronous Read and Write
tRC
tA
tRR
tPR
tA
Q0–Q 8
W
tLZR
tPW
tDVR
DATA VALID
tWC
tWR
tHZR
DATA VALID
D0–D 8
MR
R, W[9]
EF
HF
FF
tSD
tHD
DATA VALID
Figure 6. Master Reset
tMRSC[10]
tPMR
DATA VALID
tEFL
tHFH
tFFH
tRPW
tWPW
tRMR
Figure 7. Half-full Flag
HALF FULL
W
R
HF
tWHF
HALF FULL+1
HALF FULL
tRHF
Notes
9. W and R VIH around the rising edge of MR.
10. tMRSC = tPMR + tRMR.
Document Number: 38-06001 Rev. *H
Page 9 of 21
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