CY7C142-55PC Cypress Semiconductor Corp, CY7C142-55PC Datasheet - Page 5

• Manufacturer Part Number: CY7C142-55PC
• Description: IC SRAM 16KBIT 55NS 48DIP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C142-55PC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 16K (2K x 8)
• Speed: 55ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1201

Document #: 38-06031 Rev. *A
Switching Characteristics
Switching Characteristics
t
t
Busy/Interrupt Timing
t
t
t
t
t
t
t
t
t
t
Interrupt Timing
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes:
15. These parameters are measured from the input signal changing, until the output pin goes to a high-impedance state.
16. CY7C142/CY7C146 only.
17. 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:
18. 52-pin PLCC and PQFP versions only.
HZWE
LZWE
BLA
BHA
BLC
BHC
PS
WB
WH
BDD
DDD
WDD
WINS
EINS
INS
OINR
EINR
INR
RC
AA
OHA
ACE
DOE
LZOE
HZOE
Read Cycle
Parameter
Parameter
BUSY on Port B goes HIGH.
Port B’s address toggled.
CE for Port B is toggled.
R/W for Port B is toggled during valid read.
R/W LOW to High Z
R/W HIGH to Low Z
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
[18]
Description
Description
Over the Operating Range (Speeds -15, -25, -30) (continued)
Over the Operating Range (Speeds -35, -45, -55)
[9, 12]
[9]
[9]
[9, 12, 13]
[11]
[11]
[11]
[16]
[15]
[15]
[15]
[15]
[15]
Min.
Min.
13
35
7C136-15
0
5
0
0
3
7C146-15
7C132-35
7C136-35
7C142-35
7C146-35
Note 17
Note 17
Max.
Max.
10
15
15
15
15
15
15
15
15
15
15
15
35
35
20
20
[3]
Min.
Min.
20
45
7C132-25
0
5
0
0
3
7C132-45
7C136-45
7C142-45
7C146-45
7C136-25
7C142-25
7C146-25
[5, 10]
Note 17
Note 17
Max.
Max.
15
20
20
20
20
25
25
25
25
25
25
25
45
45
25
20
[3]
CY7C132/CY7C136
CY7C142/CY7C146
[5, 10]
Min.
Min.
30
55
0
5
0
0
3
7C132-30
7C136-30
7C142-30
7C146-30
7C132-55
7C136-55
7C142-55
7C146-55
Note 17
Note 17
Max.
Max.
15
20
20
20
20
30
25
25
25
25
25
25
55
55
25
25
Page 5 of 17
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns