參數(shù)資料
型號(hào)： EDS2516APTA
廠商： Elpida Memory, Inc.
英文描述： 256M bits SDRAM
中文描述： 256M比特內(nèi)存
文件頁(yè)數(shù)： 22/50頁(yè)
文件大?。?/td> 703K
代理商： EDS2516APTA
EDS2516CDTA
Prelimimary Data Sheet E0545E40 (Ver. 4.0)
22
Mode Register Configuration
Mode Register Set
The mode register is set by the input to the address pins (A0 to A12, BA0 and BA1) during mode register set cycles.
The mode register consists of five sections, each of which is assigned to address pins.
BA1, BA0, A8, A9, A10, A11, A12: (OPCODE): The SDRAM has two types of write modes. One is the burst write
mode, and the other is the single write mode. These bits specify write mode.
Burst read and burst write: Burst write is performed for the specified burst length starting from the column address
specified in the write cycle.
Burst read and single write: Data is only written to the column address specified during the write cycle, regardless of
the burst length.
A7: Keep this bit Low at the mode register set cycle. If this pin is high, the vender test mode is set.
A6, A5, A4: (LMODE): These pins specify the /CAS latency.
A3: (BT): A burst type is specified.
A2, A1, A0: (BL): These pins specify the burst length.
A2
A1
A0
Burst length
BT=0
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
1
2
4
8
R
R
1
1
1
BT=1
1
2
4
8
R
R
1
1
0
R
R
R
A3
0
1
Sequential
Interleave
Burst type
A6 A5
0
0
0
0
1
A4
0
1
0
1
X
CAS latency
R
R
2
3
R
0
0
1
1
X
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
OPCODE
0
LMODE
BT
BL
A9
0
0
R
Write mode
Burst read and burst write
A8
0
1
1
1
X
X
X
Burst read and single write
R
R
R
R
Mode Register Set
0
1
X
X
X
F.P.: Full Page
R is Reserved (inhibit)
X: 0 or 1
A11
A10
A10
0
X
X
X
X
X
X
A11
0
X
X
X
X
X
X
A12
BA0
BA1
BA1
BA0
0
0
0
1
0
1
0
0
0
0
0
1
1
0
A12
0
X
X
X
X
X
X
F.P.
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EDS2516APTA-60 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits SDRAM
EDS2516APTA-60-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits SDRAM
EDS2516APTA-60L 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits SDRAM
EDS2516APTA-60L-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits SDRAM
EDS2516APTA-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits SDRAM
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