參數(shù)資料
型號(hào)： IDT71256S150LB
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi)： DRAM
英文描述： CMOS STATIC RAM 256K (32K x 8-BIT)
中文描述： 32K X 8 STANDARD SRAM, 150 ns, CQCC32
封裝： LCC-32
文件頁(yè)數(shù)： 8/9頁(yè)
文件大?。?/td> 78K
代理商： IDT71256S150LB
7.2
8
IDT71256 S/L
CMOS STATIC RAM 256K (32K x 8-BIT)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TIMING WAVEFORM OF WRITE CYCLE NO. 1 (
WE
CONTROLLED TIMING)
(1, 2, 3, 5, 7)
TIMING WAVEFORM OF WRITE CYCLE NO. 2 (
CS
CONTROLLED TIMING)
(1, 2, 3, 5)
NOTES:
1.
WE
or
CS
must be HIGH during all address transitions.
2. A write occurs during the overlap of a LOW
CS
and a LOW
WE
.
3. t
WR
is measured from the earlier of
CS
or
WE
going HIGH to the end of the write cycle.
4. During this period, I/O pins are in the output state so that the input signals must not be applied.
5. If the
CS
LOW transition occurs simultaneously with or after the
WE
LOW transition, the outputs remain in a high-impedance state.
6. Transition is measured
±
200mV from steady state.
7. If
OE
is LOW during a
WE
controlled write cycle, the write pulse width must be the larger of t
WP
or (t
WHZ
+ 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 a
WE
controlled write cycle, this requirement does not apply and the write pulse can
be as short as the spectified t
WP.
For a
CS
controlled write cycle,
OE
may be LOW with no degradation to t
CW
.
CS
2946 drw 10
t
AW
t
WR
t
DW
DATA
IN
ADDRESS
t
WC
WE
t
WP
DATA
OUT
t
WHZ
t
OW
(4)
(7)
t
AS
(6)
(4)
t
OHZ
(6)
OE
t
DH
t
CS
2946 drw 11
t
AW
t
DW
DATA
IN
ADDRESS
t
WC
WE
t
CW
t
DH2
t
AS
t
WR
(7)
相關(guān)PDF資料
PDF描述
IDT71256S150P 1.8-V to 5-V Dual UART with 16-Byte FIFOs 48-TQFP 0 to 70
IDT71256S150PB CMOS STATIC RAM 256K (32K x 8-BIT)
IDT71256S150TD 1.8-V to 5-V Dual UART with 16-Byte FIFOs 48-TQFP 0 to 70
IDT71256S150TDB CMOS STATIC RAM 256K (32K x 8-BIT)
IDT71256S150Y CMOS STATIC RAM 256K (32K x 8-BIT)
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IDT71256S25PE 制造商:Integrated Device Technology Inc 功能描述:Static RAM, 32Kx8, 28 Pin, Plastic, SOP
IDT71256S25TDB 制造商:Integrated Device Technology Inc 功能描述:IC SRAM 256KBIT 25NS 28CDIP
IDT71256S35DB 制造商:Integrated Device Technology Inc 功能描述:IC SRAM 256KBIT 35NS 28CDIP
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