CY7C028V-15AC Cypress Semiconductor Corp, CY7C028V-15AC Datasheet - Page 9

• Manufacturer Part Number: CY7C028V-15AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C028V-15AC

• Density: 1Mb
• Access Time (max): 15ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 3.3V
• Address Bus: 16b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 185mA
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 16b
• Number Of Words: 64K
• Lead Free Status / Rohs Status: Not Compliant

Switching Waveforms
Document #: 38-06078 Rev. *B
CURRENT
Notes
DATA OUT
ADDRESS
15. R/W is HIGH for read cycles.
16. Device is continuously selected CE = V
17. OE = V
18. Address valid prior to or coincident with CE transition LOW.
19. 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
.
[15, 17, 18, 19]
DATA VALID
CY7C027V/027VN/027AV/028V
[15, 18, 19]
[15, 16, 17]
DATA VALID
CY7C037V/037AV/038V
t
OHA
t
t
t
OHA
HZCE
PD
t
t
t
HZCE
HZCE
HZOE
Page 9 of 18
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