參數(shù)資料
型號: IS42VS16100C1-10T
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: DRAM
英文描述: 512K Words x 16 Bits x 2 Banks (16-MBIT) SYNCHRONOUS DYNAMIC RAM
中文描述: 1M X 16 SYNCHRONOUS DRAM, 7 ns, PDSO50
封裝: 0.400 INCH, PLASTIC, MS-24, TSOP2-50
文件頁數(shù): 32/80頁
文件大?。?/td> 772K
代理商: IS42VS16100C1-10T
IS42VS16100C1
ISSI
32
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. 00A
04/15/05
Write Cycle Interruption Using the
Precharge Command
A write cycle can be interrupted by the execution of the
precharge command before that cycle completes. The
delay time (t
WDL
) from the precharge command to the point
where burst input is invalid, i.e., the point where input data
is no longer written to device internal memory is zero clock
cycles regardless of the
CAS
.
To inhibit invalid write, the DQM signal must be asserted
HIGH with the precharge command.
This precharge command and burst write command must
be of the same bank, otherwise it is not precharge interrupt
but only another bank precharge of dual bank operation.
Inversely, to write all the burst data to the device, the
precharge command must be executed after the write
data recovery period (t
DPL
) has elapsed. Therefore, the
precharge command must be executed on one clock
cycle that follows the input of the last burst data item.
CAS
Latency
t
WDL
t
DPL
3
0
1
2
0
1
PRE 0
WRITE A0
COMMAND
DQM
DQ
CLK
D
IN
A0
D
IN
A1
D
IN
A2
D
IN
A3
t
WDL
=0
WRITE (CA=A, BANK 0)
PRECHARGE (BANK 0)
MASKED BY DQM
PRE 0
WRITE A0
COMMAND
DQ
CLK
D
IN
A0
D
IN
A1
D
IN
A2
D
IN
A3
t
DPL
WRITE (CA=A, BANK 0)
PRECHARGE (BANK 0)
CAS
latency = 2, burstlength = 4
CAS
latency = 3, burstlength = 4
相關(guān)PDF資料
PDF描述
IS42VS16100C1-10TI 512K Words x 16 Bits x 2 Banks (16-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42VS16100C1-10TL 512K Words x 16 Bits x 2 Banks (16-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42VS16400C1 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42VS16400C1-10T 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42VS16400C1-10TL 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM
相關(guān)代理商/技術(shù)參數(shù)
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