RMLD232UAW datasheet(23/50 Pages) EMLSI

Part #	RMLD232UAW

Description	2M x 32 bit Low Power DDR SDRAM

PDF	50 Pages

Scroll/Zoom	100%

Manufacturer	EMLSI [Emerging Memory & Logic Solutions Inc]

Direct Link	http://www.emlsi.com

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23 / 50 page

Rev 0.7

64Mb Low Power DDR SDRAM

Advanced

Power down

The device enters power down mode when CKE Low, and it exits when CKE High. Once the power down mode is initiated, all of the

receiver circuits except CK and CKE are gated off to reduce power consumption. The both bank should be in idle state prior to enter-

ing the precharge power down mode and CKE should be set high at least 1 tCK+tIS prior to Row active command. During power down

mode, refresh operations cannot be performed, therefore the device cannot remain in power down mode longer than the refresh

period(tREF) of the device.

(NOP)

CKE

Active

tIS

Figure.18 Power down entry and exit timing

Precharge

power

down

Entry

Precharge

power

down

Exit

Active

power

down

Entry

Active

power

down

Exit

READ

tIS

tPDEX

tIS

Command

RMLD232UAW Datasheet(PDF) 23 Page - Emerging Memory & Logic Solutions Inc