參數(shù)資料
型號: CY7C09089
廠商: Cypress Semiconductor Corp.
英文描述: 64K x 8 Synchronous Dual-Port Static RAM(64K x 8 同步雙端口靜態(tài)RAM)
中文描述: 64KX8的同步雙端口靜態(tài)存儲器(64KX8的同步雙端口靜態(tài)RAM)的
文件頁數(shù): 10/20頁
文件大小: 337K
代理商: CY7C09089
CY7C09079/89/99
CY7C09179/89/99
10
PRELIMINARY
Bank Select Pipelined Read
[18, 19]
Left Port Write to Flow-Through Right Port Read
[20, 21, 22, 23]
Notes:
18. In this depth expansion example, B1 represents Bank #1 and B2 is Bank #2; Each Bank consists of one Cypress dual-port device from this data sheet.
ADDRESS
= ADDRESS
.
19. OE and ADS = V
; CE
, CE
, R/W, CNTEN, and CNTRST = V
.
20. The same waveforms apply for a right port write to flow-through left port read.
21. CE
and ADS = V
; CE
, CNTEN, and CNTRST = V
.
22. OE = V
IL
for the right port, which is being read from. OE = V
for the left port, which is being written to.
23. It t
maximum specified, then data from right port READ is not valid until the maximum specified for t
CWDD
. If t
CCS
>maximum specified, then data is not valid
until t
CCS
+ t
CD1
. t
CWDD
does not apply in this case.
Switching Waveforms
(continued)
D
3
D
1
D
0
D
2
A
0
A
1
A
2
A
3
A
4
A
5
D
4
A
0
A
1
A
2
A
3
A
4
A
5
t
SA
t
HA
t
SC
t
HC
t
SA
t
HA
t
SC
t
HC
t
SC
t
HC
t
SC
t
HC
t
CKHZ
t
DC
t
DC
t
CD2
t
CKLZ
t
CD2
t
CD2
t
CKHZ
t
CKLZ
t
CD2
t
CKHZ
t
CKLZ
t
CD2
t
CH2
t
CL2
t
CYC2
CLK
L
ADDRESS
(B1)
CE
0(B1)
DATA
OUT(B2)
DATA
OUT(B1)
ADDRESS
(B2)
CE
0(B2)
t
SA
t
HA
t
SW
t
HW
t
SD
t
HD
MATCH
VALID
t
CCS
t
SW
t
SA
t
HW
t
HA
t
DC
t
CWDD
t
CD1
MATCH
MATCH
NO
MATCH
NO
VALID
VALID
t
DC
t
CD1
CLK
L
R/W
L
ADDRESS
L
DATA
INL
ADDRESS
R
DATA
OUTR
CLK
R
R/W
R
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