EtronTech

EM68932DVKB

Etron Confidential

13

Rev. 1.0

Aug. 2009

DEEP POWER DOWN

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..