參數(shù)資料
型號: IBM038329NP6B
廠商: IBM Microeletronics
英文描述: 256K x 32 Synchronous Graphics RAM(256K x 32 高性能8M位CMOS同步動態(tài)RAM(帶內(nèi)置的圖形性能))
中文描述: 256K × 32同步圖形RAM(256K × 32位高性能800萬的CMOS同步動態(tài)隨機存儲器(帶內(nèi)置的圖形性能))
文件頁數(shù): 60/66頁
文件大?。?/td> 952K
代理商: IBM038329NP6B
IBM038329NL6B
IBM038329NP6B
256K x 32 Synchronous Graphics RAM
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 60 of 66
03K4292.E35604
Revised 3/98
Self Refresh Mode (SREF)
The Self Refresh Mode is used to keep the device refreshed during its sleep mode for battery powered sys-
tems to conserve power.
SREF (ENT) command will put the device in Self Refresh Mode and the information in the memory cells will
be kept alive by refreshing the DRAM cells internally by initiating 1024 cycles every 16ms.
Exiting Self Refresh at clock edge n will put the device in the “all banks idle” state once t
XSR
is met. NOP
commands should be issued on any clock edges occurring during the t
XSR
period.
The following page shows the timing diagrams for the Power Down Mode and the Self Refresh Mode. Entry
into these modes and exit from these modes are also illustrated.
Logic Table for Self Refresh
Mnemonic
CKE
CS
RAS
CAS
WE
DSF
DQM
BA (A9)
A8
A7-A0
n-1
n
SREF (ENT)
H
L
L
L
L
H
L
X
X
X
X
SREF (EXT)
L
H
H
X
X
X
X
X
X
X
X
L
H
L
H
H
H
X
X
X
X
X
相關(guān)PDF資料
PDF描述
IBM041812PQKB 64K X 18 BURST SRAM(64K X 18高性能可猝發(fā)同步CMOS靜態(tài)RAM)
IBM041813PPLB 64K X 18 BURST PIPELINE SRAM(1M (64K X 18)同步可猝發(fā)流水線式線式高性能靜態(tài)RAM)
IBM041813PQKB 64K X 18 Burst Pipeline SRAM(1M(64K X 18)高性能同步可猝發(fā)管線式靜態(tài)RAM)
IBM041814PPLB 64K X 18 BURST SRAM(1M (64K X 18)同步可猝發(fā)高性能靜態(tài)RAM)
IBM041814PQKB 64K X 18 BURST SRAM(1M(64K X 18)高性能同步可猝發(fā)CMOS靜態(tài)RAM)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IBM038329NQ6A-7R5 制造商:IBM 功能描述:
IBM041812PQKB10 制造商:IBM 功能描述:*
IBM041812PQKB11 制造商:IBM 功能描述:*
IBM041813PQKB5 制造商:IBM 功能描述:
IBM0418A4ACLAA-4F 制造商:IBM 功能描述: