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参数资料
| 型号： | NT5SV16M16AT-8BL |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 256Mb Synchronous DRAM |
| 中文描述： | 256Mb的同步DRAM |
| 文件页数： | 27/65页 |
| 文件大小： | 814K |
| 代理商： | NT5SV16M16AT-8BL |
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NT5SV64M4AT(L)
NT5SV32M8AT(L)
NT5SV16M16AT(L)
256Mb Synchronous DRAM
REV 1.0
May, 2001
27
NANYA TECHNOLOGY CORP
. All rights reserved.
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
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)
相关PDF资料 |
PDF描述 |
|---|---|
| NT5SV32M8AT | 256Mb Synchronous DRAM |
| NT5SV32M8AT-75B | 256Mb Synchronous DRAM |
| NT5SV32M8AT-7K | 256Mb Synchronous DRAM |
| NT5SV32M8AT-8B | 256Mb Synchronous DRAM |
| NT5SV64M4AT | 256Mb Synchronous DRAM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NT5SV16M4DT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:64Mb Synchronous DRAM |
| NT5SV16M4DT-6K | 制造商:未知厂家 制造商全称:未知厂家 功能描述:64Mb Synchronous DRAM |
| NT5SV16M4DT-7 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:64Mb Synchronous DRAM |
| NT5SV16M4DT-7K | 制造商:未知厂家 制造商全称:未知厂家 功能描述:64Mb Synchronous DRAM |
| NT5SV32M8AT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:256Mb Synchronous DRAM |
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