PD45128441-I Datasheet, PDF (9/89 Pages) Elpida Memory – 128M-bit Synchronous DRAM 4-bank, LVTTL WTR (Wide Temperature Range)

µPD45128441-I, 45128841-I, 45128163-I
13. Electrical Specifications ................................................................................................................ 34
13.1 AC Parameters for Read Timing ........................................................................................................ 39
13.2 AC Parameters for Write Timing ........................................................................................................ 41
13.3 Relationship between Frequency and Latency ................................................................................. 42
13.4 Mode Register Set ............................................................................................................................... 43
13.5 Power on Sequence and CBR (Auto) Refresh .................................................................................. 44
13.6 /CS Function ........................................................................................................................................ 45
13.7 Clock Suspension during Burst Read (using CKE Function) ......................................................... 46
13.8 Clock Suspension during Burst Write (using CKE Function) ......................................................... 48
13.9 Power Down Mode and Clock Mask .................................................................................................. 50
13.10 CBR (Auto) Refresh ............................................................................................................................. 51
13.11 Self Refresh (Entry and Exit) .............................................................................................................. 52
13.12 Random Column Read (Page with Same Bank) ............................................................................... 53
13.13 Random Column Write (Page with Same Bank) ............................................................................... 55
13.14 Random Row Read (Ping-Pong Banks) ............................................................................................ 57
13.15 Random Row Write (Ping-Pong Banks) ............................................................................................ 59
13.16 Read and Write .................................................................................................................................... 61
13.17 Interleaved Column Read Cycle ......................................................................................................... 63
13.18 Interleaved Column Write Cycle ......................................................................................................... 65
13.19 Auto Precharge after Read Burst ....................................................................................................... 67
13.20 Auto Precharge after Write Burst ....................................................................................................... 69
13.21 Full Page Read Cycle .......................................................................................................................... 71
13.22 Full Page Write Cycle .......................................................................................................................... 73
13.23 Byte Write Operation ........................................................................................................................... 75
13.24 Burst Read and Single Write (Option) ............................................................................................... 77
13.25 Full Page Random Column Read ....................................................................................................... 79
13.26 Full Page Random Column Write ....................................................................................................... 81
13.27 PRE (Precharge) Termination of Burst .............................................................................................. 83
14. Package Drawing ............................................................................................................................ 85
15. Recommended Soldering Conditions .......................................................................................... 86
16. Revision History ............................................................................................................................. 87
Preliminary Data Sheet E0233N10
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