CY7C025-25AXC Cypress Semiconductor Corp, CY7C025-25AXC Datasheet - Page 15

• Manufacturer Part Number: CY7C025-25AXC
• Description: IC SRAM 128KBIT 25NS 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C025-25AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 128K (8K x 16)
• Speed: 25ns
• 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: 428-2093; CY7C025-25AXC

Switching Waveforms
Note
Document #: 38-06035 Rev. *D
CE
Left Address Valid First:
CE
Right Address Valid First:
42. If t
L
ADDRESS
ADDRESS
R
Valid First:
ADDRESS
ADDRESS
PS
ADDRESS
ADDRESS
Valid First:
is violated, the busy signal is asserted on one side or the other, but there is no guarantee to which side BUSY is asserted.
BUSY
BUSY
BUSY
BUSY
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]
CY7C024/024A/0241
CY7C025/0251
Page 15 of 21
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