CY7C144-15AXIT Cypress Semiconductor Corp, CY7C144-15AXIT Datasheet - Page 13
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CY7C144-15AXIT
Manufacturer Part Number
CY7C144-15AXIT
Description
CY7C144-15AXIT
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C144-55AXC.pdf
(23 pages)
Specifications of CY7C144-15AXIT
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C144-15AXIT
Manufacturer:
Cypress Semiconductor Corp
Quantity:
10 000
Switching Waveforms
Notes
Document #: 38-06034 Rev. *H
23. CE = HIGH for the duration of the above timing (both write and read cycle).
24. I/O
25. Semaphores are reset (available to both ports) at cycle start.
26. If t
A
SPS
0R
0
SEM
A
A
R/W
I/O
A
= I/O
OE
0R
is violated, the semaphore will definitely be obtained by one side or the other, but there is no guarantee which side will control the semaphore.
0L
SEM
2
0
SEM
A
R/W
A
R/W
0L
2R
2L
= LOW (request semaphore); CE
R
L
L
R
t
SA
Figure 10. Semaphore Read After Write Timing, Either Side
(continued)
Valid Address
t
AW
Write
R
t
t
PWE
SCE
= CE
t
Figure 11. Semaphore Contention
Data
SD
L
Cycle
= HIGH
t
Match
SPS
Match
t
IN
HA
Valid
t
HD
t
SWRD
t
SOP
t
SOP
Read Cycle
Valid Address
t
AA
[24, 25, 26]
t
ACE
t
DOE
Data
[23]
CY7C144 CY7C145
OUT
Valid
t
OHA
Page 13 of 23
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