參數(shù)資料
型號: IDT70V26S55G
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: DRAM
英文描述: HIGH-SPEED 3.3V 16K x 16 DUAL-PORT STATIC RAM
中文描述: 16K X 16 DUAL-PORT SRAM, 55 ns, CPGA84
封裝: CERAMIC, PGA-84
文件頁數(shù): 9/17頁
文件大?。?/td> 144K
代理商: IDT70V26S55G
6.42
IDT70V26S/L
High-Speed 16K x 16 Dual-Port Static RAM Industrial and Commercial Temperature Ranges
$-;-3#*,
W
+$
7@!
NOTES:
1. R/
W
or
CE
or
UB
and
LB
must be HIGH during all address transitions.
2. A write occurs during the overlap (t
EW
or t
WP
) of a LOW
CE
and a LOW R/
W
for memory array writing cycle.
3. t
WR
is measured fromthe earlier of
CE
or R/
W
(or
SEM
or R/
W
) going HIGH to the end of write cycle.
4. During this period, the I/O pins are in the output state and input signals must not be applied.
5. If the
CE
or
SEM
LOW transition occurs simultaneously with or after the R/
W
LOW transition, the outputs remain in the High-impedance state.
6. Timng depends on which enable signal is asserted last,
CE
or R/
W
.
7. This parameter is guaranteed by device characterization, but is not production tested. Transition is measured 0mV fromsteady state with the Output Test Load
(Figure 2).
8. If
OE
is LOW during R/
W
controlled write cycle, the write pulse width must be the larger of t
WP
or (t
WZ
+ t
DW
) to allow the I/O drivers to turn off and data to be placed on the
bus for the required t
DW
. If
OE
is HIGH during an R/
W
controlled write cycle, this requirement does not apply and the write pulse can be as short as the specified t
WP
.
9. To access RAM
CE
= V
IL
and
SEM
= V
IH
. To access semaphore,
CE
= V
IH
and
SEM
= V
IL
. t
EW
must be met for either condition.
$-;-3#
CE UB LB
+$
7!
R/
W
t
WC
t
HZ
t
AW
t
WR
t
AS
t
WP
DATA
OUT
(2)
t
WZ
t
DW
t
DH
t
OW
OE
ADDRESS
DATA
IN
(6)
(4)
(4)
(7)
CE
or
SEM
2945 drw 08
(9)
CE
or
SEM
(9)
(7)
(3)
2945 drw 09
t
WC
t
AS
t
WR
t
DW
t
DH
ADDRESS
DATA
IN
R/
W
t
AW
t
EW
UB
or
LB
(3)
(2)
(6)
CE
or
SEM
(9)
(9)
相關PDF資料
PDF描述
IDT70V26S55GI HIGH-SPEED 3.3V 16K x 16 DUAL-PORT STATIC RAM
IDT70V26S55J HIGH-SPEED 3.3V 16K x 16 DUAL-PORT STATIC RAM
IDT70V26S55JI HIGH-SPEED 3.3V 16K x 16 DUAL-PORT STATIC RAM
IDT70V27L15BF ACB 17C 17#1 PIN RECP WALL RM
IDT70V27L15BFI HIGH-SPEED 3.3V 32K x 16 DUAL-PORT STATIC RAM
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