參數(shù)資料
型號(hào)： IBMN312404CT3
廠商： IBM Microeletronics
英文描述： 128Mb(2Mbit x 16 I/O x 4 Bank) Synchronous DRAM(128M位(2M位 x 16 I/O x 4 組)同步動(dòng)態(tài)RAM)
中文描述： 128Mb的（2Mbit的× 16的I / O × 4行）同步DRAM（128兆位（200萬(wàn)位× 16的I / O × 4組）同步動(dòng)態(tài)RAM）的
文件頁(yè)數(shù)： 3/66頁(yè)
文件大?。?/td> 1696K
代理商： IBMN312404CT3
IBMN312164CT3 IBMN312804CT3
IBMN312404CT3
Preliminary
128Mb Synchronous DRAM - Die Revision B
06K7582.H03335A
10/00
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 3 of 66
Pin Description
CK
Clock Input
DQ0-DQ15
Data Input/Output
CKE
Clock Enable
DQM, LDQM, UDQM
Data Mask
CS (CS0, CS1)
Chip Select
V
DD
Power (+3.3V)
RAS
Row Address Strobe
V
SS
Ground
CAS
Column Address Strobe
V
DDQ
Power for DQs (+3.3V)
WE
Write Enable
V
SSQ
Ground for DQs
BS1, BS0
Bank Select
NC
No Connection
A0 - A11
Address Inputs
—
—
Input/Output Functional Description
Symbol
Type
Polarity
Function
CLK
Input
Positive
Edge
The system clock input. All of the SDRAM inputs are sampled on the rising edge of the clock.
CKE
Input
Active Highclock, CKE low initiates the Power Down mode, Suspend mode, or the Self Refresh mode.
CS, CS0,
CS1
Input
Active Low
CS (CS0, CS1 for stacked devices) enables the command decoder when low and disables the
command decoder when high. When the command decoder is disabled, new commands are
ignored but previous operations continue.
RAS, CAS,
WE
Input
Active Lowbe executed by the SDRAM.
BS0, BS1
Input
—
Selects which bank is to be active.
A0 - A11
Input
—
During a Bank Activate command cycle, A0-A11 defines the row address (RA0-RA11) when sam-
pled at the rising clock edge.
During a Read or Write command cycle, A0-A9 and A11 defines the column address (CA0-CA9,
CA11) when sampled at the rising clock edge.
A10 is used to invoke auto-precharge operation at the end of the burst read or write cycle. If A10 is
high, auto-precharge is selected and BS0, BS1 defines the bank to be precharged. If A10 is low,
autoprecharge is disabled.
During a Precharge command cycle, A10 is used in conjunction with BS0, BS1 to control which
bank(s) to precharge. If A10 is high, all banks will be precharged regardless of the state of BS. If
A10 is low, then BS0 and BS1 are used to define which bank to precharge.
DQ0 - DQ15
Input-
Output
—
Data Input/Output pins operate in the same manner as on conventional DRAMs.
DQM
LDQM
UDQM
Input
Active High
The Data Input/Output mask places the DQ buffers in a high impedance state when sampled high.
In x16 products, LDQM and UDQM control the lower and upper byte I/O buffers, respectively. In
Read mode, DQM has a latency of two clock cycles and controls the output buffers like an output
enable. DQM low turns the output buffers on and DQM high turns them off. In Write mode, DQM
has a latency of zero and operates as a word mask by allowing input data to be written if it is low
but blocks the write operation if DQM is high.
V
DD
, V
SS
Supply
—
Power and ground for the input buffers and the core logic.
V
DDQ
V
SSQ
Supply
—
Isolated power supply and ground for the output buffers to provide improved noise immunity.
相關(guān)PDF資料
PDF描述
IBMN312804CT3 128Mb(4Mbit x 8 I/O x 4 Bank) Synchronous DRAM(128M位(4M位 x 8 I/O x 4 組)同步動(dòng)態(tài)RAM)
IBMN312164CT3 128Mb(8Mbit x 4 I/O x 4 Bank) Synchronous DRAM(128M位(8M位 x 4 I/O x 4 組)同步動(dòng)態(tài)RAM)
IBMN325404CT3 256Mb（4Mbit x 16 I/O x 4 Bank） Synchronous DRAM(256M位（4M位 x 16 I/O x 4 組）同步動(dòng)態(tài)RAM)
IBMN325804CT3 256Mb（8Mbit x 8 I/O x 4 Bank） Synchronous DRAM(256M位（8M位 x 8 I/O x 4 組）同步動(dòng)態(tài)RAM)
IBMN325164CT3 256Mb（16Mbit x 4 I/O x 4 Bank） Synchronous DRAM(256M位（16M位 x 4 I/O x 4 組）同步動(dòng)態(tài)RAM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IBMN364164CT3C360 制造商:IBM 功能描述:*
IBMPPC403GAJC33C1 制造商:IBM 功能描述:
IBMPPC750CLGEQ4023 制造商:IBM 功能描述:MPU 750CL RISC 32BIT 90NM 400MHZ 1.15V/1.8V 278FCBGA - Trays
IBMPPC750CLGEQ5023 制造商:IBM Microelectronics 功能描述:MPU 750CL RISC 32BIT 90NM 500MHZ 1.15V/1.8V 278FCBGA - Trays
IBMPPC750CLGEQA033 制造商:IBM 功能描述:MPU 750CL RISC 32BIT 90NM 1GHZ 1.15V/1.8V 278FCBGA - Trays 制造商:IBM 功能描述:IBMIBMPPC750CLGEQA033 CPU PPC 750CL 1GHZ
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*