CY7C028-12AC Cypress Semiconductor Corp, CY7C028-12AC Datasheet - Page 9
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CY7C028-12AC
Manufacturer Part Number
CY7C028-12AC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C028-12AC.pdf
(19 pages)
Specifications of CY7C028-12AC
Density
1Mb
Access Time (max)
12ns
Sync/async
Asynchronous
Architecture
Not Required
Clock Freq (max)
Not RequiredMHz
Operating Supply Voltage (typ)
5V
Address Bus
16b
Package Type
TQFP
Operating Temp Range
0C to 70C
Number Of Ports
2
Supply Current
325mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
100
Word Size
16b
Number Of Words
64K
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C028-12AC
Manufacturer:
CYPRESS
Quantity:
1 329
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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