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| 型號(hào)： | EDD2504AKTA-7B-E |
| 廠商： | ELPIDA MEMORY INC |
| 元件分類(lèi)： | DRAM |
| 英文描述： | 256M bits DDR SDRAM (64M words x 4 bits) |
| 中文描述： | 64M X 4 DDR DRAM, 0.75 ns, PDSO66 |
| 封裝： | ROHS COMPLIANT, PLASTIC, TSOP2-66 |
| 文件頁(yè)數(shù)： | 18/49頁(yè) |
| 文件大小： | 441K |
| 代理商： | EDD2504AKTA-7B-E |
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EDD2504AKTA
Data Sheet E0457E10 (Ver. 1.0)
18
Command Truth Table for CKE
Current State
CKE
n – 1 n
/CS /RAS /CAS /WE Address
Operation
Notes
Self refresh
H
×
×
×
×
×
×
INVALID, CK (n-1) would exit self refresh
L
H
H
×
×
×
×
Self refresh recovery
L
H
L
H
H
×
×
Self refresh recovery
L
H
L
H
L
×
×
ILLEGAL
L
H
L
L
×
×
×
ILLEGAL
L
L
×
×
×
×
×
Maintain self refresh
Self refresh recovery
H
H
H
×
×
×
×
Idle after tRC
H
H
L
H
H
×
×
Idle after tRC
H
H
L
H
L
×
×
ILLEGAL
H
H
L
L
×
×
×
ILLEGAL
H
L
H
×
×
×
×
ILLEGAL
H
L
L
H
H
×
×
ILLEGAL
H
L
L
H
L
×
×
ILLEGAL
H
L
L
L
×
×
×
ILLEGAL
Power down
H
×
×
×
×
×
INVALID, CK (n – 1) would exit power down
L
H
H
×
×
×
×
EXIT power down
→
Idle
L
H
L
H
H
H
×
L
L
×
×
×
×
×
Maintain power down mode
All banks idle
H
H
H
×
×
×
Refer to operations in Function Truth Table
H
H
L
H
×
×
Refer to operations in Function Truth Table
H
H
L
L
H
×
Refer to operations in Function Truth Table
H
H
L
L
L
H
×
CBR (auto) refresh
H
H
L
L
L
L
OPCODE Refer to operations in Function Truth Table
H
L
H
×
×
×
Refer to operations in Function Truth Table
H
L
L
H
×
×
Refer to operations in Function Truth Table
H
L
L
L
H
×
Refer to operations in Function Truth Table
H
L
L
L
L
H
×
Self refresh
1
H
L
L
L
L
L
OPCODE Refer to operations in Function Truth Table
L
×
×
×
×
×
×
Power down
1
Row active
H
×
×
×
×
×
×
Refer to operations in Function Truth Table
Remark: H: VIH. L: VIL.
×
: VIH or VIL
Note: Self refresh can be entered only from the all banks idle state. Power down can be entered only from all
banks idle or row active state.
L
×
×
×
×
×
×
Power down
1
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| EDD2504AKTA-E | 256M bits DDR SDRAM (64M words x 4 bits) |
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| EDD2508AKTA-5B-E | 256M bits DDR SDRAM (32M words x 8 bits, DDR400) |
| EDD2508AKTA-5C-E | 256M bits DDR SDRAM (32M words x 8 bits, DDR400) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EDD2504AKTA-E | 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:256M bits DDR SDRAM (64M words x 4 bits) |
| EDD2508AETA | 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:256M bits DDR SDRAM |
| EDD2508AETA-5B-E | 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:256M bits DDR SDRAM |
| EDD2508AETA-5C-E | 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:256M bits DDR SDRAM |
| EDD2508AETA-6B-E | 制造商:ELPIDA 制造商全稱(chēng):Elpida Memory 功能描述:256M bits DDR SDRAM |
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