CY7C025-15AC Cypress Semiconductor Corp, CY7C025-15AC Datasheet - Page 11
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CY7C025-15AC
Manufacturer Part Number
CY7C025-15AC
Description
IC SRAM 128KBIT 15NS 100LQFP
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C024-15AC.pdf
(20 pages)
Specifications of CY7C025-15AC
Format - Memory
RAM
Memory Type
SRAM - Dual Port, Asynchronous
Memory Size
128K (8K x 16)
Speed
15ns
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
Contains lead / RoHS non-compliant
Other names
428-1157
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C025-15AC
Manufacturer:
CYPRESS
Quantity:
853
Company:
Part Number:
CY7C025-15AC
Manufacturer:
Cypress Semiconductor Corp
Quantity:
10 000
Switching Waveforms
Document #: 38-06035 Rev. **
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
Notes:
32. CE = HIGH for the duration of the above timing (both write and read cycle).
33. I/O
34. Semaphores are reset (available to both ports) at cycle start.
35. If t
A
A
A
0R
0L
0
SPS
0R
SEM
SEM
–A
R/W
SEM
R/W
I/O
R/W
–A
–A
OE
= I/O
is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable.
2
2L
0
2R
R
L
L
R
0L
= LOW (request semaphore); CE
t
SA
(continued)
VALID ADRESS
t
AW
R
= CE
WRITE CYCLE
t
t
PWE
SCE
t
L
SD
DATA
t
= HIGH.
MATCH
SPS
MATCH
[33, 34, 35]
t
IN
HA
VALID
[32]
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
AA
VALID ADRESS
t
DOE
t
ACE
DATA
OUT
CY7C024/0241
CY7C025/0251
VALID
t
OHA
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