參數(shù)資料
型號(hào): CY7C09389A
廠商: Cypress Semiconductor Corp.
英文描述: 64K x18 Synchronous Dual Port Static RAM(64K x 18 同步雙端口靜態(tài) RAM)
中文描述: 64K的x18同步雙端口靜態(tài)存儲(chǔ)器(64K的× 18同步雙端口靜態(tài)RAM)的
文件頁數(shù): 9/17頁
文件大?。?/td> 338K
代理商: CY7C09389A
CY7C09269A/79/89
CY7C09369A/79/89
9
PRELIMINARY
Bank Select Pipelined Read
[20, 21]
Left Port Write to Flow-Through Right Port Read
[22, 23, 24, 25]
Notes:
20. 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
.
21. UB, LB, OE and ADS = V
; CE
, CE
, R/W, CNTEN, and CNTRST = V
IH
.
22. The same waveforms apply for a right port write to flow-through left port read.
23. CE
, UB, LB, and ADS = V
; CE
, CNTEN, and CNTRST = V
.
24. OE = V
IL
for the right port, which is being read from. OE = V
for the left port, which is being written to.
25. 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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