CY7C421-25DMB QP SEMICONDUCTOR, CY7C421-25DMB Datasheet - Page 8

• Manufacturer Part Number: CY7C421-25DMB
• Manufacturer: QP SEMICONDUCTOR

Specifications of CY7C421-25DMB

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Switching Waveforms
Document #: 38-06001 Rev. *A
Asynchronous Read and Write
Master Reset
Half-Full Flag
Notes:
12. t
11. W and R
MRSC
R, W
= t
Q
D
PMR
0
0
[11]
–Q
–D
MR
HF
HF
EF
V
FF
W
R
IH
W
R
+ t
8
8
around the rising edge of MR.
RMR
.
HALF FULL
t
LZR
t
PW
t
A
t
t
WHF
RC
t
t
t
t
HFH
SD
FFH
EFL
DATA VALID
t
WC
DATA VALID
t
t
PMR
MRSC
t
RR
t
DVR
t
HD
[12]
t
WR
t
A
t
PR
HALF FULL+1
t
t
WPW
RPW
DATA VALID
t
RMR
DATA VALID
t
HZR
CY7C419/21/25/29/33
t
RHF
HALF FULL
Page 8 of 22
C420–9
C420–10
C420–11