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CY7C460A/CY7C462A
CY7C464A/CY7C466A
Document #: 38-06011 Rev. *A
Page 5 of 15
Switching Waveforms[7]
Notes:
8.
A HIGH-to-LOW transition of either the write or read strobe causes a HIGH-to-LOW transition of the responding flag. Correspondingly, a LOW-to-HIGH strobe
transition causes a LOW-to-HIGH flag transition.
9.
W and R = VIH around the rising edge of MR.
10. tMSRC = t PMR + t RMR
Asynchronous Read and Write
C460A–7
DATA VALID
DATA VALID
DATA VALID
DATA VALID
tSD
tHD
tRC
tPR
tA
tRR
tA
tLZR
tDVR
tHZR
tWC
tPW
tWR
R
Q0−Q 8
W
D0−D 8
tSD
tHD
tPW
Master Reset
MR
R,W
HF
FF
EF
tMRSC
tPMR
tEFL
tHFH
tFFH
tRPW
tWPW
tRMR
C460A–8
[10]
[9]
HALF FULL+1
HALF FULL
HALF FULL
W
R
HF
tWHF
tRHF
Half Full Flag
C460A–9
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