參數(shù)資料
型號(hào): IDT70T3339S200BC
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): DRAM
英文描述: HIGH-SPEED 2.5V 512/256/128K X 18 SYNCHRONOUS DUAL-PORT STATIC RAM WITH 3.3V OR 2.5V INTERFACE
中文描述: 512K X 18 DUAL-PORT SRAM, 10 ns, PBGA256
封裝: 17 X 17 MM, 1.40 MM HEIGHT, 1 MM PITCH, BGA-256
文件頁(yè)數(shù): 15/28頁(yè)
文件大?。?/td> 485K
代理商: IDT70T3339S200BC
6.42
IDT70T3339/19/99S
High-Speed 2.5V 512/256/128K x 18 Dual-Port Static RAM Industrial and Commercial Temperature Ranges
PRELIMINARY
Timing Waveform of Left Port Write to Pipelined Right Port Read
(1,2,4)
Timing Waveform with Port-to-Port Flow-Through Read
(1,2,4)
NOTES:
1.
CE
0
,
UB
,
LB
, and
ADS
= V
IL
; CE
1
,
CNTEN
, and
REPEAT
= V
IH
.
2.
OE
= V
IL
for the Right Port, which is being read from
OE
= V
IH
for the Left Port, which is being written to.
3. If t
CO
< mnimumspecified, then data fromPort "B" read is not valid until following Port "B" clock cycle (i.e., time fromwrite to valid read on opposite port will be
t
CO
+ t
CYC
+ t
CD1
). If t
CO
> mnimum then data fromPort "B" read is available on first Port "B" clock cycle (i.e., time fromwrite to valid read on opposite port will
be t
CO
+ t
CD1
).
4. All timng is the same for both left and right ports. Port "A" may be either left or right port. Port "B" is the opposite of Port "A".
CLK
"A"
R/
W
"A
"
ADDRESS
"A"
DATA
IN"A"
CLK
"B"
R/
W
"B"
ADDRESS
"B"
DATA
OUT"B"
t
SW
t
HW
t
SA
t
HA
t
SD
t
HD
t
SW
t
HW
t
SA
t
HA
t
CO
(3)
t
CD2
MNO
VALID
NO
H
MATC
H
MATC
H
VALID
5652 drw 09
t
DC
,
DATA
IN "A"
CLK
"B"
R/
W
"B"
ADDRESS
"A"
R/
W
"A"
CLK
"A"
ADDRESS
"B"
NO
MATCH
MATCH
NO
MATCH
MATCH
VALID
t
CD1
t
DC
DATA
OUT "B"
5652 drw 10
VALID
VALID
t
SW
t
HW
t
SA
t
HA
t
SD
t
HD
t
HW
t
HA
t
CD1
t
CO
t
DC
t
SA
t
SW
(3)
,
NOTES:
1.
CE
0
,
UB
,
LB
, and
ADS
= V
IL
; CE
1
,
CNTEN
, and
REPEAT
= V
IH
.
2.
OE
= V
IL
for Port "B", which is being read from
OE
= V
IH
for Port "A", which is being written to.
3. If t
CO
< mnimumspecified, then data fromPort "B" read is not valid until following Port "B" clock cycle (ie, time fromwrite to valid read on opposite port will be
t
CO
+ 2 t
CYC2
+ t
CD2
). If t
CO
> mnimum then data fromPort "B" read is available on first Port "B" clock cycle (ie, time fromwrite to valid read on opposite port
will be t
CO
+ t
CYC2
+ t
CD2
).
4. All timng is the same for Left and Right ports. Port "A" may be either Left or Right port. Port "B" is the opposite of Port "A"
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IDT70T3319S200BC HIGH-SPEED 2.5V 512/256/128K X 18 SYNCHRONOUS DUAL-PORT STATIC RAM WITH 3.3V OR 2.5V INTERFACE
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