512Mb: 32 Meg x 16, 16 Meg x 32 Mobile SDRAM
Deep Power-Down
Deep Power-Down
Deep power-down mode is a maximum power-saving feature achieved by shutting off
the power to the entire device memory array. Data on the memory array will not be re-
tained after deep power-down mode is executed. Deep power-down mode is entered by
having all banks idle, with CS# and WE# held LOW with RAS# and CAS# HIGH at the
rising edge of the clock, while CKE is LOW. CKE must be held LOW during deep power-
down.
To exit deep power-down mode, CKE must be asserted HIGH. Upon exiting deep power-
down mode, a full initialization sequence is required.
PDF: 09005aef8459c827
512mb_mobile_sdram_y67m_at.pdf – Rev. B 3/11 EN
81
Micron Technology, Inc. reserves the right to change products or specifications without notice.
? 2011 Micron Technology, Inc. All rights reserved.
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