CY7C025-55AC Cypress Semiconductor Corp, CY7C025-55AC Datasheet - Page 11
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CY7C025-55AC
Manufacturer Part Number
CY7C025-55AC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C025-55AC.pdf
(21 pages)
Specifications of CY7C025-55AC
Density
128Kb
Access Time (max)
55ns
Sync/async
Asynchronous
Architecture
Not Required
Clock Freq (max)
Not RequiredMHz
Operating Supply Voltage (typ)
5V
Address Bus
12b
Package Type
TQFP
Operating Temp Range
0C to 70C
Number Of Ports
2
Supply Current
230mA
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
8K
Lead Free Status / RoHS Status
Not Compliant
Switching Waveforms
Notes
Document #: 38-06035 Rev. *D
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
CURRENT
DATA OUT
ADDRESS
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
Figure 6. Read Cycle No. 3 (Either Port)
IL
and UB or LB = V
, SEM = V
t
AA
t
PU
t
AA
IH
t
t
LZCE
LZCE
. To access semaphore, CE = V
t
LZCE
t
t
IL
ACE
ABE
. This waveform cannot be used for semaphore reads.
t
LZOE
t
t
RC
ACE
t
RC
t
DOE
IH
, SEM = V
[23, 25, 26, 26, 27]
IL
DATA VALID
.
[23, 26, 27]
[23, 24, 25]
DATA VALID
t
OHA
CY7C024/024A/0241
t
t
t
OHA
HZCE
PD
t
t
t
HZCE
HZCE
HZOE
CY7C025/0251
Page 11 of 21
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