CY7C027-20AXC Cypress Semiconductor Corp, CY7C027-20AXC Datasheet - Page 13

• Manufacturer Part Number: CY7C027-20AXC
• Description: CY7C027-20AXC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C027-20AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 512K (32K x 16)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 428-2098; CY7C027-20AXC

Switching Waveforms
Left Address Valid First:
Document #: 38-06042 Rev. *F
CE
CE
Right Address Valid First:
Note
42. If t
L
ADDRESS
ADDRESS
R
Valid First:
ADDRESS
ADDRESS
ADDRESS
ADDRESS
Valid First:
PS
BUSY
BUSY
BUSY
BUSY
is violated, the busy signal is asserted on one side or the other, but there is no guarantee to which side BUSY is asserted.
CE
CE
CE
CE
L,R
L,R
R
R
R
L
L
L
R
L
R
R
L
L
Figure 14. Busy Timing Diagram No. 2 (Address Arbitration)
(continued)
Figure 13. Busy Timing Diagram No.1 (CE Arbitration)
t
t
PS
PS
ADDRESS MATCH
ADDRESS MATCH
t
t
RC
RC
or t
or t
t
t
PS
PS
WC
WC
t
t
BLA
BLA
ADDRESS MATCH
ADDRESS MATCH
t
t
BLC
BLC
ADDRESS MISMATCH
ADDRESS MISMATCH
t
t
BHA
BHA
t
t
BHC
BHC
[42]
[42]
CY7C027/028
CY7C037/038
Page 13 of 19
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