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

Il numero della parte RMLD232UAW
Spiegazioni elettronici  2M x 32 bit Low Power DDR SDRAM
PDF  50 Pages
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Produttore elettronici  EMLSI [Emerging Memory & Logic Solutions Inc]
Homepage  http://www.emlsi.com
Logo EMLSI - Emerging Memory & Logic Solutions Inc

RMLD232UAW Scheda tecnica(HTML) 23 Page - Emerging Memory & Logic Solutions Inc

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23
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.
CK
CK
(NOP)
CKE
Active
tIS
tIS
Figure.18 Power down entry and exit timing
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Precharge
Precharge
power
down
Entry
Precharge
power
down
Exit
Active
power
down
Entry
Active
power
down
Exit
READ
tIS
tPDEX
tIS
Command



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