CY7C131-55NC Cypress Semiconductor Corp, CY7C131-55NC Datasheet - Page 6
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CY7C131-55NC
Manufacturer Part Number
CY7C131-55NC
Description
IC,SRAM,1KX8,CMOS,QFP,52PIN,PLASTIC
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C131-55NC.pdf
(19 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C131-55NC
Manufacturer:
CYPRESS
Quantity:
120
Switching Characteristics
Switching Characteristics
Document #: 38-06002 Rev. *D
t
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Shaded areas contain preliminary information.
Note:
16. These parameters are measured from the input signal changing, until the output pin goes to a high-impedance state.
17. CY7C140/CY7C141 only.
18. A write operation on Port A, where Port A has priority, leaves the data on Port B’s outputs undisturbed until one access time after one of the following:
BLA
BHA
BLC
BHC
PS
WB
WH
BDD
DDD
WDD
WINS
EINS
INS
OINR
EINR
INR
t
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BUSY/INTERRUPT TIMING
INTERRUPT TIMING
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
READ CYCLE
Parameter
Parameter
BUSY on Port B goes HIGH.
Port B’s address is toggled.
CE for Port B is toggled.
R/W for Port B is toggled during valid read.
[17]
BUSY LOW from Address Match
BUSY HIGH from Address Mismatch
BUSY LOW from CE LOW
BUSY HIGH from CE HIGH
Port Set Up for Priority
R/W LOW after BUSY LOW
R/W HIGH after BUSY HIGH
BUSY HIGH to Valid Data
Write Data Valid to Read Data Valid
Write Pulse to Data Delay
R/W to INTERRUPT Set Time
CE to INTERRUPT Set Time
Address to INTERRUPT Set Time
OE to INTERRUPT Reset Time
CE to INTERRUPT Reset Time
Address to INTERRUPT Reset Time
Read Cycle Time
Address to Data Valid
Data Hold from Address Change
CE LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
OE HIGH to High Z
CE LOW to Low Z
Description
Description
[9, 13, 14]
Over the Operating Range
[9, 13, 14]
Over the Operating Range
[9, 13, 14]
[12]
[12]
[12]
[16]
[16]
[16]
[16]
[16]
[6,11]
[6, 11]
Min.
Min.
(continued)
35
7C131-15
13
0
3
5
7C130-35
7C131-35
7C140-35
7C141-35
5
0
7C141-15
Note 18
Note 18
Max.
Max.
35
35
20
20
15
15
15
15
15
15
15
15
15
15
15
[3]
Min.
Min.
7C130-25
45
20
5
0
0
3
5
7C130-45
7C131-45
7C140-45
7C141-45
7C131-25
7C140-25
7C141-25
Note 18
Note 18
CY7C130/CY7C131
CY7C140/CY7C141
Max.
Max.
20
20
20
20
25
25
25
25
25
25
25
45
45
25
20
[3]
Min.
Min.
55
30
7C130-55
7C131-55
7C140-55
7C141-55
0
3
5
5
0
7C130-30
7C131-30
7C140-30
7C141-30
Note 18
Note 18
Max.
Max.
55
55
25
25
20
20
20
20
30
25
25
25
25
25
25
Page 6 of 19
Unit
Unit
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ns
ns
ns
ns
ns
ns
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ns
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