CY7C464A-15PC Cypress Semiconductor Corp, CY7C464A-15PC Datasheet - Page 5

• Manufacturer Part Number: CY7C464A-15PC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C464A-15PC

• Density: 256Kb
• Word Size: 9b
• Sync/async: Asynchronous
• Expandable: Yes
• Package Type: DIP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 28
• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-06011 Rev. *A
Switching Waveforms
Notes:
Asynchronous Read and Write
10. t
8.
9.
Master Reset
Half Full Flag
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
MSRC
= t
Q
D
R, W
PMR
0
0
IH
Q
D
HF
MR
HF
W
EF
FF
W
R
+ t
R
[9]
around the rising edge of MR.
8
8
RMR
HALF FULL
[7]
t
LZR
t
PW
t
A
t
RC
t
t
WHF
SD
t
DATA VALID
t
t
HFH
FFH
EFL
t
WC
DATA VALID
t
t
PMR
RR
t
t
MRSC
DVR
t
HD
t
WR
[10]
t
A
t
PR
HALF FULL+1
t
t
WPW
RPW
DATA VALID
t
PW
t
RMR
t
SD
DATA VALID
t
HZR
CY7C460A/CY7C462A
CY7C464A/CY7C466A
t
HD
t
RHF
HALF FULL
Page 5 of 15
C460A–7
C460A–8
C460A–9