CY7C421 CYPRESS [Cypress Semiconductor], CY7C421 Datasheet - Page 9

• Manufacturer Part Number: CY7C421
• Manufacturer: CYPRESS [Cypress Semiconductor]

Switching Waveforms
Document Number: 38-06001 Rev. *H
Notes
9. W and R  V
10. t
MRSC
= t
R, W
PMR
Q
D
0
0
[9]
IH
–Q
–D
MR
HF
HF
EF
FF
+ t
W
R
W
around the rising edge of MR.
R
RMR
8
8
.
HALF FULL
t
LZR
t
PW
t
A
Figure 5. Asynchronous Read and Write
t
t
WHF
RC
t
t
t
SD
t
HFH
FFH
EFL
DATA VALID
t
WC
DATA VALID
Figure 6. Master Reset
Figure 7. Half-full Flag
t
t
PMR
MRSC
t
RR
t
DVR
t
HD
[10]
t
WR
t
A
t
PR
HALF FULL+1
t
t
WPW
RPW
DATA VALID
t
RMR
DATA VALID
t
HZR
t
RHF
HALF FULL
CY7C421
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