- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377550 > IS42S16800A1-7TL (INTEGRATED SILICON SOLUTION INC) 8Meg x16 128-MBIT SYNCHRONOUS DRAM PDF資料下載
參數(shù)資料
| 型號： | IS42S16800A1-7TL |
| 廠商： | INTEGRATED SILICON SOLUTION INC |
| 元件分類： | DRAM |
| 英文描述： | 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
| 中文描述： | 8M X 16 SYNCHRONOUS DRAM, 7 ns, PDSO54 |
| 封裝： | LEAD FREE, TSOP2-54 |
| 文件頁數(shù)： | 26/63頁 |
| 文件大?。?/td> | 827K |
| 代理商： | IS42S16800A1-7TL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁
ISSI
26
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev.
00
B
0
5/01
/06
IS42S16800A1
Data Mask
The SDRAM has a Data Mask function that can be used in conjunction with data read and write cycles. When the Data Mask is
activated (DQM high) during a write cycle, the write operation is prohibited immediately (zero clock latency). If the Data Mask is
activated during a read cycle, the data outputs are disabled and become high impedance after a two-clock delay, independent
of CAS latency.
No Operation Command
The No Operation Command should be used in cases when the SDRAM is in an idle or a wait state. The purpose of the No
Operation Command is to prevent the SDRAM from registering any unwanted commands between operations. A No Operation
Command is registered when CS is low with RAS, CAS, and WE held high at the rising edge of the clock. A No Operation Com-
mand will not terminate a previous operation that is still executing, such as a burst read or write cycle.
Deselect Command
The Deselect Command performs the same function as a No Operation Command. Deselect Command occurs when CS is
brought high, the RAS, CAS, and WE signals become don’t cares.
Data Mask Activated during a Read Cycle
COMMAND
NOP
READ A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DQM
: “H” or “L”
A two-clock delay before
the DQs become Hi-Z
DQs
CK
T0
T2
T1
T3
T4
T5
T6
T7
T8
DOUT A
0
DOUT A
1
(Burst Length = 4, CAS Latency = 2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IS42S16800B-7TL | 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800B | 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800B-6T | 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800B-6TL | 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800B-6TLI | 16Meg x 8, 8Meg x16 128-MBIT SYNCHRONOUS DRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS42S16800A-6T | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800A-6TL | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800A-7B | 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800A-7BI | 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:16Meg x 8, 8Meg x16 & 4Meg x 32 128-MBIT SYNCHRONOUS DRAM |
| IS42S16800A-7BL | 制造商:Integrated Silicon Solution Inc 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。