CY7C144-15AXI Cypress Semiconductor Corp, CY7C144-15AXI Datasheet - Page 11

• Manufacturer Part Number: CY7C144-15AXI
• Description: CY7C144-15AXI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C144-15AXI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 64K (8K x 8)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Switching Waveforms
Notes
Document #: 38-06034 Rev. *H
13. R/W is HIGH for read cycle.
14. Device is continuously selected CE = LOW and OE = LOW. This waveform cannot be used for semaphore reads.
15. Address valid prior to or coincident with CE transition LOW.
16. CE
17. BUSY = HIGH for the writing port.
18. CE
Data Out
Address
SEM or CE
Data Out
L
L
Address
Address
= L, SEM = H when accessing RAM. CE = H, SEM = L when accessing semaphores.
= CE
Data Out L
Data in
I
R
OE
I
CC
SB
R/W
= LOW.
R
R
R
L
Previous Data Valid
t
PU
t
OHA
Figure 6. Read Cycle No. 2 (Either Port CE/OE Access)
Figure 5. Read Cycle No. 1 (Either Port Address Access)
t
LZCE
Figure 7. Read Timing with Port-to-Port Delay (M/S=L)
t
LZOE
t
ACE
t
AA
t
DOE
Match
Match
t
WC
t
RC
t
PWE
t
WDD
Data Valid
t
Valid
SD
t
HZOE
[13, 15, 16]
t
Data Valid
DDD
[17, 18]
[13, 14]
t
HD
CY7C144 CY7C145
t
HZCE
t
PD
Valid
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