參數(shù)資料
型號(hào)： AS4SD16M16
英文描述： 256000Kbits 16M x 16 Replacement with DSCC 5962-n/a | SDRAM
中文描述： 256000Kbits 16米x 16置換籍局5962氮/ 1 |內(nèi)存
文件頁(yè)數(shù)： 23/51頁(yè)
文件大?。?/td> 1071K
代理商： AS4SD16M16
S DR A M
AS4SD16M16
Austin Semiconductor, Inc.
AS4SD16M16
Rev. 1.5 6/03
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
23
NOTES:
1. This table applies when CKE
n-1
was HIGH and CKE
n
is HIGH (see Truth Table 2) and after t
XSR
has been met (if the previous
state was self refresh).
2. This table is bank-specific, except where noted, i.e., the current state is for a specific bank and the commands shown are those
allowed to be issued to that bank when in that state. Exceptions are covered in the notes below.
3. Current state definitions:
Idle:
The bank has been precharged, and t
RP
has been met.
Row Active:
A row in the bank has been activated, and t
RCD
has been met. No data bursts/accesses and no
register accesses are in progress.
Read:
A READ burst has been initiated, with auto precharge disabled, and has not yet terminated or been
terminated.
Write:
A WRITE burst has been initiated, with auto precharge disabled, and has not yet terminated or been
terminated.
4. The following states must not be interrupted by a command issued to the same bank. COMMAND INHIBIT or NOP commands,
or allowable commands to the other bank should be issued on any clock edge occurring during these states. Allowable
commands to the other bank are determined by its current state and Truth Table 3, and according to Truth Table 4.
Precharging:
Starts with registration of a PRECHARGE command and ends when t
RP
is met. Once t
RP
is met, the
bank will be in the idle state.
Row Activating:
Starts with registration of an ACTIVE command and ends when t
RCD
is met. Once t
RCD
is met, the
bank will be in the row active state.
Read w/ Auto
Precharge Enabled:
Starts with registration of a READ command with auto precharge enabled and ends when t
RP
has
been met. Once t
RP
is met, the bank will be in the idle state.
Write w/ Auto
Precharge Enabled:
Starts with registration of a WRITE command with auto precharge enabled and ends when t
RP
has
been met. Once t
RP
is met, the bank will be in the idle state.
(continued on next page)
TRUTH TABLE 3: CURRENT STATE BANK
n
, COMMAND TO BANK
n
1,2,3,4,5,6
CURRENT STATE CS\ RAS\ CAS\ WE\
COMMAND (ACTION)
NOTES
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
L
L
L
L
H
H
L
H
H
L
H
H
H
L
H
X
H
H
L
L
H
L
L
H
L
L
H
H
L
L
H
H
X
H
H
H
L
L
H
L
L
H
L
L
L
H
L
L
L
COMMAND INHIBIT (NOP/Continue previous operation)
NO OPERATION (NOP/Continue previous operation)
ACTIVE (Select and active row)
AUTO REFRESH
LOAD MODE REGISTER
PRECHARGE
READ (Select column and start READ burst)
WRITE (Select column and start WRITE burst)
PRECHARGE (Deactivate row in bank or banks)
READ (Select column and start new READ burst)
WRITE (Select column and start WRITE burst)
PRECHARGE (Truncate READ burst, start PRECHARGE)
BURST TERMINATE
READ (Select column and start READ burst)
WRITE (Select column and start new WRITE burst)
PRECHARGE (Truncate WRITE burst, start PRECHARGE)
BURST TERMINATE
7
7
11
10
10
8
10
10
8
9
10
10
8
9
Write
(Auto Precharge
Disabled)
ANY
Idle
Row Active
Read
(Auto Precharge
Disabled)
相關(guān)PDF資料
PDF描述
AS4SD1M16S-10 x16 SDRAM
AS4SD1M16S-12 x16 SDRAM
AS4SD1M16S-8A x16 SDRAM
AS4SD4M16A2-10 x16 SDRAM
AS4SD4M16A2-8 x16 SDRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AS4SD16M16_09 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256 MB: 16 Meg x 16 SDRAM Synchronous DRAM Memory
AS4SD16M16DG-75 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256 MB: 16 Meg x 16 SDRAM Synchronous DRAM Memory
AS4SD16M16DG-75/ET 制造商:Micross Components 功能描述:SDRAM-SDR,256MB - Trays
AS4SD16M16DG-75/IT 制造商:Micross Components 功能描述:SDRAM-SDR,256MB - Trays
AS4SD16M16DG-75/IT+ 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256 MB: 16 Meg x 16 SDRAM Synchronous DRAM Memory
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

*
*
*