CY7C028-15AI Cypress Semiconductor Corp, CY7C028-15AI Datasheet - Page 9

• Manufacturer Part Number: CY7C028-15AI
• Description: IC SRAM 64KX16 ASYN DUAL 100TQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C028-15AI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1M (64K x 16)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Switching Waveforms
Document #: 38-06042 Rev. *D
CURRENT
Notes
DATA OUT
ADDRESS
23. R/W is HIGH for read cycles.
24. Device is continuously selected CE = V
25. OE = V
26. Address valid prior to or coincident with CE transition LOW.
27. To access RAM, CE = V
DATA OUT
ADDRESS
DATA OUT
UB or LB
LB or UB
CE and
IL
CE
I
OE
I
.
CC
SB
PREVIOUS DATA VALID
IL
, UB or LB = V
Figure 4. Read Cycle No. 1 (Either Port Address Access)
Figure 5. Read Cycle No. 2 (Either Port CE/OE Access)
t
OHA
IL
IL
, SEM = V
Figure 6. Read Cycle No. 3 (Either Port)
and UB or LB = V
t
AA
t
PU
t
IH
AA
. To access semaphore, CE = V
t
t
LZCE
LZCE
t
LZCE
IL
t
t
ACE
ABE
. This waveform cannot be used for semaphore reads.
t
LZOE
t
t
RC
ACE
t
RC
t
DOE
IH
, SEM = V
IL
.
[23, 25, 26, 27]
DATA VALID
[23, 26, 27]
[23 ,24, 25]
DATA VALID
t
OHA
t
t
t
OHA
HZCE
PD
t
t
t
HZCE
HZCE
HZOE
CY7C027/028
CY7C037/038
Page 9 of 19
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