CY7C464-40PC Cypress Semiconductor Corp, CY7C464-40PC Datasheet - Page 5

• Manufacturer Part Number: CY7C464-40PC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C464-40PC

• Configuration: Dual
• Density: 288Kb
• Access Time (max): 40ns
• Word Size: 9b
• Organization: 32Kx9
• Sync/async: Asynchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PDIP
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 70mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 28
• Lead Free Status / Rohs Status: Not Compliant

Switching Waveforms
Note:
7.
8.
9.
Half Full Flag
Last Write to First Read Full Flag
Asynchronous Read and Write
Master Reset
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.
W and R = V
t
MSRC
= t
PMR
R, W
Q
FF
D
W
R
IH
0
0
+ t
HF
W
MR
around the rising edge of MR.
HF
EF
FF
R
Q
D
W
R
[8]
RMR
8
8
HALF FULL
t
WFF
LAST WRITE
[7]
t
LZR
t
PW
t
A
t
WHF
t
RC
t
t
t
t
HFH
SD
FFH
EFL
DATA VALID
t
WC
DATA VALID
FIRST READ
t
PMR
t
t
RR
MRSC
t
DVR
t
t
HD
RFF
t
[9]
WR
5
t
A
t
HALF FULL+1
PR
ADDITIONAL
t
t
WPW
READS
RPW
DATA VALID
t
PW
t
RMR
FIRST WRITE
t
SD
DATA VALID
t
HZR
t
HD
t
RHF
HALF FULL
CY7C460
CY7C462
CY7C464
C460–10
C460–9
C460–7
C460–8