Cypress Semiconductor Perform CY7C146 Podręcznik - Strona 6

Przeglądaj online lub pobierz pdf Podręcznik dla Sprzęt komputerowy Cypress Semiconductor Perform CY7C146. Cypress Semiconductor Perform CY7C146 16 stron. 2k x 8 dual-port static ram

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Switching Characteristics
Over the Operating Range (Speeds -35, -45, -55)
Parameter
Read Cycle
t
Read Cycle Time
RC
t
Address to Data Valid
AA
t
Data Hold from Address Change
OHA
t
CE LOW to Data Valid
ACE
t
OE LOW to Data Valid
DOE
t
OE LOW to Low Z
LZOE
t
OE HIGH to High Z
HZOE
t
CE LOW to Low Z
LZCE
t
CE HIGH to High Z
HZCE
t
CE LOW to Power Up
PU
t
CE HIGH to Power Down
PD
[12]
Write Cycle
t
Write Cycle Time
WC
t
CE LOW to Write End
SCE
t
Address Setup to Write End
AW
t
Address Hold from Write End
HA
t
Address Setup to Write Start
SA
t
R/W Pulse Width
PWE
t
Data Setup to Write End
SD
t
Data Hold from Write End
HD
t
R/W LOW to High Z
HZWE
t
R/W HIGH to Low Z
LZWE
Busy/Interrupt Timing
t
BUSY LOW from Address Match
BLA
t
BUSY HIGH from Address Mismatch
BHA
t
BUSY LOW from CE LOW
BLC
t
BUSY HIGH from CE HIGH
BHC
t
Port Set Up for Priority
PS
t
R/W LOW after BUSY LOW
WB
t
R/W HIGH after BUSY HIGH
WH
t
BUSY HIGH to Valid Data
BDD
t
Write Data Valid to Read Data Valid
DDD
t
Write Pulse to Data Delay
WDD
Document #: 38-06031 Rev. *E
[8]
Description
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[9]
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[7, 10]
[7, 10, 11]
[7, 10]
[7, 10, 11]
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[13]
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[14]
CY7C136A, CY7C142, CY7C146
7C132-35
7C132-45
7C136-35
7C136-45
7C142-35
7C142-45
7C146-35
7C146-45
Min
Max
Min
35
45
35
0
0
35
20
3
3
20
5
5
20
0
0
35
35
45
30
35
30
35
2
2
0
0
25
30
15
20
0
0
20
0
0
20
20
20
20
5
5
0
0
30
35
35
Note 15
Note 15
Note 15
Note 15
CY7C132, CY7C136
7C132-55
7C136-55
7C136A-55
7C142-55
7C146-55
Max
Min
Max
55
45
55
0
45
55
25
25
3
20
25
5
20
25
0
35
35
55
40
40
2
0
30
20
0
20
25
0
25
30
25
30
25
30
25
30
5
0
35
45
45
Note 15
Note 15
Page 6 of 15
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