參數(shù)資料
型號： μPD4564323
廠商： NEC Corp.
英文描述： 64M-bit Synchronous DRAM(64M 同步動態(tài)RAM)
中文描述： 6400位同步DRAM（6400同步動態(tài)RAM）的
文件頁數(shù)： 7/82頁
文件大?。?/td> 659K
代理商： ΜPD4564323
7
μ
PD4564323
Preliminary Data Sheet
13. Electrical Specifications ................................................................................................................. 32
13.1
AC Parameters for Read Timing ......................................................................................................... 37
13.2
AC Parameters for Write Timing ......................................................................................................... 39
13.3
Relationship between Frequency and Latency ................................................................................. 40
13.4
Mode Register Write ............................................................................................................................ 41
13.5
Power on Sequence and Auto Refresh .............................................................................................. 42
13.6
/CS Function ......................................................................................................................................... 43
13.7
Clock Suspension during Burst Read (using CKE Function) .......................................................... 44
13.8
Clock Suspension during Burst Write (using CKE Function) .......................................................... 46
13.9
Power Down Mode and Clock Mask ................................................................................................... 48
13.10 CBR Refresh ......................................................................................................................................... 49
13.11 Self Refresh (Entry and Exit) ............................................................................................................... 50
13.12 Random Column Read (Page with Same Bank) ................................................................................ 51
13.13 Random Column Write (Page with Same Bank) ................................................................................ 53
13.14 Random Row Read (Ping-Pong Banks) ............................................................................................. 55
13.15 Random Row Write (Ping-Pong Banks) ............................................................................................. 57
13.16 Read and Write ..................................................................................................................................... 59
13.17 Interleaved Column Read Cycle .......................................................................................................... 61
13.18 Interleaved Column Write Cycle ......................................................................................................... 63
13.19 Auto Precharge after Read Burst ........................................................................................................ 65
13.20 Auto Precharge after Write Burst ....................................................................................................... 67
13.21 Full Page Read Cycle ........................................................................................................................... 69
13.22 Full Page Write Cycle ........................................................................................................................... 71
13.23 Byte Write Operation ............................................................................................................................ 73
13.24 Burst Read and Single Write (Option) ................................................................................................ 74
13.25 Full Page Random Column Read ........................................................................................................ 75
13.26 Full Page Random Column Write ....................................................................................................... 76
13.27 PRE (Precharge) Termination of Burst ............................................................................................... 77
14. Package Drawing ............................................................................................................................. 79
15. Recommended Soldering Conditions ........................................................................................... 80
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