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EM42BM3284LBA_09 参数 Datasheet PDF下载

EM42BM3284LBA_09图片预览
型号: EM42BM3284LBA_09
PDF下载: 下载PDF文件 查看货源
内容描述: 1GB ( 8M × 4Bank × 32 ),双倍数据速率SDRAM [1Gb (8M×4Bank×32) Double DATA RATE SDRAM]
分类和应用: 动态存储器双倍数据速率
文件页数/大小: 24 页 / 1075 K
品牌: EOREX [ EOREX CORPORATION ]
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eorex  
EM42BM3284LBA  
3. Operative Command Table (Continued)  
Current State /CS /R /C /W  
Addr.  
Command  
Action  
H
L
L
L
X
H
H
H
X
H
H
L
X
H
L
X
X
X
DESL  
NOP  
TERM  
READ  
NOP  
NOP  
NOP  
ILLEGAL(Note 1)  
H
BA/CA/A10  
L
L
H
L
L
L
BA/CA/A10 WRIT/WRITA New write, Determine AP  
Write  
Recovering  
ILLEGAL (Note 1)  
H
H
BA/RA  
ACT  
ILLEGAL (Note 1)  
ILLEGAL  
L
L
L
L
H
L
L
BA/A10  
PRE/PREA  
REFA  
H
X
Op-Code,  
Mode-Add  
L
L
L
L
MRS  
ILLEGAL  
H
L
L
L
L
L
L
X
H
H
H
L
X
H
H
L
H
H
L
X
H
L
X
H
L
X
X
X
DESL  
NOP  
TERM  
NOP(idle after tRP)  
NOP(idle after tRP)  
NOP  
BA/CA/A10 READ/WRIT ILLEGAL  
Refreshing  
BA/RA  
BA/A10  
X
ACT  
PRE/PREA  
REFA  
ILLEGAL  
NOP(idle after tRP)  
ILLEGAL  
L
L
H
Op-Code,  
Mode-Add  
L
L
L
L
MRS  
ILLEGAL  
Remark H = High level, L = Low level, X = High or Low level (Don't care), AP = Auto Pre-charge  
Note 1: ILLEGAL to bank in specified states;  
Function may be legal in the bank indicated by Bank Address (BA), depending on the state of  
that bank.  
Note 2: Must satisfy bus contention, bus turn around, and/or write recovery requirements.  
Note 3: NOP to bank precharging or in idle state.May precharge bank indicated by BA.  
Note 4: ILLEGAL of any bank is not idle.  
Feb. 2009  
www.eorex.com  
15/24  
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