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參數(shù)資料
| 型號： | EDD5108ADTA-7AL-E |
| 廠商： | ELPIDA MEMORY INC |
| 元件分類： | DRAM |
| 英文描述： | 512M bits DDR SDRAM |
| 中文描述： | 64M X 8 DDR DRAM, 0.75 ns, PDSO66 |
| 封裝： | LEAD FREE, PLASTIC, TSOP2-66 |
| 文件頁數(shù)： | 14/48頁 |
| 文件大?。?/td> | 558K |
| 代理商： | EDD5108ADTA-7AL-E |
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EDD5108AFTA-5, EDD5116AFTA-5
Data Sheet E0741E20 (Ver. 2.0)
14
Row address strobe and bank activate [ACT]
This command activates the bank that is selected by BA0, BA1 and determines the row address (AX0 to AX12).
(See Bank Select Signal Table)
Precharge selected bank [PRE]
This command starts precharge operation for the bank selected by BA0, BA1. (See Bank Select Signal Table)
[Bank Select Signal Table]
BA0
BA1
Bank 0
L
L
Bank 1
H
L
Bank 2
L
H
Bank 3
H
H
Remark: H: VIH. L: VIL.
Precharge all banks [PALL]
This command starts a precharge operation for all banks.
Refresh [REF/SELF]
This command starts a refresh operation. There are two types of refresh operation, one is auto-refresh, and another
is self-refresh. For details, refer to the CKE truth table section.
Mode register set/Extended mode register set [MRS/EMRS]
The DDR SDRAM has the two mode registers, the mode register and the extended mode register, to defines how it
works. The both mode registers are set through the address pins (the A0 to the A12, BA0 to BA1) in the mode
register set cycle. For details, refer to "Mode register and extended mode register set".
CKE Truth Table
CKE
Current state
Command
n – 1
n
/CS
/RAS
/CAS
/WE
Address
Notes
Idle
Auto-refresh command (REF)
H
H
L
L
L
H
×
2
Idle
Self-refresh entry (SELF)
H
L
L
L
L
H
×
2
Idle
Power down entry (PDEN)
H
L
L
H
H
H
×
H
L
H
×
×
×
×
Self refresh
Self refresh exit (SELFX)
L
H
L
H
H
H
×
L
H
H
×
×
×
×
Power down
Power down exit (PDEX)
L
H
L
H
H
H
×
Remark: H: VIH. L: VIL.
×
: VIH or VIL.
Notes: 1. All the banks must be in IDLE before executing this command.
2. The CKE level must be kept for 1 CK cycle at least.
L
H
H
×
×
×
×
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相關代理商/技術參數(shù) |
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| EDD5108ADTA-7ALI | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M bits DDR SDRAM WTR (Wide Temperature Range) |
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| EDD5108ADTA-7B | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M bits DDR SDRAM |
| EDD5108ADTA-7B-E | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M bits DDR SDRAM |
| EDD5108ADTA-7BL | 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M bits DDR SDRAM |
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