參數(shù)資料
型號: μPD45D128442
廠商: NEC Corp.
英文描述: 128 M-bit Synchronous DRAM with Double Data Rate(128 同步動態(tài)RAM)
中文描述: 128 M位同步雙數(shù)據(jù)速率(128同步動態(tài)RAM的內(nèi)存)
文件頁數(shù): 8/80頁
文件大?。?/td> 637K
代理商: ΜPD45D128442
8
μ
PD45D128442, 45D128842, 45D128164
Preliminary Data Sheet
CONTENTS
1. Input/Output Pin Function ..... 10
2. Commands ..... 11
3. Simplified State Diagram ..... 15
4. Truth Table ..... 16
4.1 Command Truth Table ..... 16
4.2 DM Truth Table ..... 16
4.3 CKE Truth Table ..... 16
4.4 Operative Command Table ..... 17
4.5 Command Truth Table for CKE ..... 20
5. Initialization ..... 21
6. Programming the Mode Register ..... 22
7. Mode Register ..... 23
7.1 Burst Length and Sequence ..... 24
8. Address Bits of Bank-Select and Precharge ..... 25
9. Precharge ..... 26
9.1 Read to Precharge Command Interval ..... 26
9.2 Write to Precharge Command Interval ..... 27
10. Auto Precharge ..... 28
10.1 Read with Auto Precharge ..... 28
10.2 Write with Auto Precharge ..... 29
11. Read/Write Command Interval ..... 30
11.1 Read to Read Command Interval ..... 30
11.2 Write to Write Command Interval ..... 31
11.3 Write to Read Command Interval ..... 32
11.4 Read to Write Command Interval ..... 33
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