參數(shù)資料
型號: EDS6432AFTA-75TI-E
廠商: ELPIDA MEMORY INC
元件分類: DRAM
英文描述: 64M bits SDRAM WTR (Wide Temperature Range)
中文描述: 2M X 32 SYNCHRONOUS DRAM, 5.4 ns, PDSO86
封裝: ROHS COMPLIANT, PLASTIC, TSOP2-86
文件頁數(shù): 21/49頁
文件大?。?/td> 707K
代理商: EDS6432AFTA-75TI-E
EDS6432AFTA-TI
Preliminary Data Sheet E0630E10 (Ver. 1.0)
21
Mode Register Configuration
Mode Register Set
The mode register is set by the input to the address pins (A0 to A10, 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: (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
1
R
Write mode
Burst read and burst write
A8
0
1
0
Burst read and single write
1
X
X
X
R
R
R
R
1
X
X
X
F.P.: Full Page
R is Reserved (inhibit)
X: 0 or 1
A10
A10
0
X
X
X
X
X
X
BA0
BA1
BA1
BA0
0
0
0
0
1
0
1
0
0
0
0
0
1
1
F.P.
Mode Register Set
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EDS6432CFTA-75-E 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:64M bits SDRAM (2M words x 32 bits)