EM68932DVKB 参数 Datasheet PDF下载

EtronTech

DEEP POWER DOWN

EM68932DVKB

Deep Power Down achieves maximum power reduction by eliminating the power of the whole memory

array and surrounding circuitry. Data will not be retained in the memory storage array, the Mode Register,

or the Extended Mode Register once the device enters Deep Power Down mode.

This mode is entered by having all banks idle then

CS

and

WE

held Low with

RAS

and

CAS

held High

at the rising edge of the clock, while CKE is Low. This mode is exited by asserting CKE High, applying

only NOP commands for 200 microseconds, and then continuing with steps 4 through 11 of the Power Up

and Initialization sequence..

Etron Confidential

13

Rev. 1.0

Aug. 2009