CY7C027V-20AC Cypress Semiconductor Corp, CY7C027V-20AC Datasheet - Page 10
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CY7C027V-20AC
Manufacturer Part Number
CY7C027V-20AC
Description
IC SRAM 512KB DUAL 100-TQFP
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C027V-20AC.pdf
(17 pages)
Specifications of CY7C027V-20AC
Format - Memory
RAM
Memory Type
SRAM - Dual Port, Asynchronous
Memory Size
512K (32K x 16)
Speed
20ns
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C027V-20AC
Manufacturer:
MICRON
Quantity:
9 130
Company:
Part Number:
CY7C027V-20AC
Manufacturer:
Cypress Semiconductor Corp
Quantity:
10 000
Switching Waveforms
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
Notes:
34. CE = HIGH for the duration of the above timing (both write and read cycle).
35. I/O
36. Semaphores are reset (available to both ports) at cycle start.
37. If t
A
A
A
0R
0L
0
SPS
0R
SEM
SEM
–A
SEM
R/W
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
2R
0
R
L
R
L
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
[35, 36, 37]
t
IN
HA
VALID
[34]
t
HD
t
SWRD
10
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
DATA
CY7C027V/028V
CY7C037V/038V
OUT
VALID
t
OHA