NT5CB256M8FN-DI datasheet(40/163 Pages) NANYA

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DDR3(L) 2Gb SDRAM

NT5CB(C)256M8FN / NT5CB(C)128M16FP

Version 1.7

Nanya Technology Cooperation ©

04/2015

Change Frequency during Precharge Power-down

NOTES:

1. Applicable for both SLOW EXIT and FAST EXIT Precharge Power-down

2. tAOFPD and tAOF must be statisfied and outputs High-Z prior to T1; refer to ODT timing section for exact requirements

3. If the RTT_NOM feature was enabled in the mode register prior to entering Precharge power down mode, the ODT signal must

continuously be registered LOW ensuring RTT is in an off state. If the RTT_NOM feature was disabled in the mode register prior to entering

Precharge power down mode, RTT will remain in the off state. The ODT signal can be registered either LOW or HIGH in this case.

Ta0

Tb0

Tc0

Tc1

Td0

Td1

Te0

CKE

Command

DQS,

DQS

tCH

tCL

tCK

Te1

tIH

tIS

tIH

tIS

tCKSRE

tCKE

tCKSRX

tCHb tCLb

tCKb

NOP

MRS

NOP

Valid

DLL

Reset

Valid

tIH

tIS

Address

ODT

High-Z

tAOFPD/tAOF

tCPDED

tXP

tDLLK

Previous Clock Frequency

New Clock Frequency

Frequency

Change

Enter Precharge

Power-Down mode

Exit Precharge

Power-Down mode

NT5CB256M8FN-DI Datasheet(PDF) 40 Page - Nanya Technology Corporation.

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