mt45w4mw16p Micron Semiconductor Products, mt45w4mw16p Datasheet - Page 12

• Manufacturer Part Number: mt45w4mw16p
• Description: Async/page Cellularramtm 1.0 Memory
• Manufacturer: Micron Semiconductor Products

Figure 8:
Deep Power-Down Operation
PDF: 09005aef80be1ee8/Source: 09005aef80be1f7f
AsyncCellularRAM_2.fm - Rev. G 10/05 EN
Software Access PAR Functionality
Deep power-down (DPD) operation disables all refresh-related activity. This mode is
used when the system does not require the storage provided by the CellularRAM device.
Any stored data will become corrupted when DPD is entered. When refresh activity has
been re-enabled, the CellularRAM device will require 150µs to perform an initialization
procedure before normal operations can resume. READ and WRITE operations are
ignored during DPD operation.
NO
PAR permanently
independent of
To enable PAR,
bring ZZ# LOW
Change to ZZ#
functionality.
executed?
Power-Up
ZZ# level.
for 10µs.
Software
enabled,
LOAD
YES
64Mb: 4 Meg x 16 Async/Page CellularRAM 1.0 Memory
12
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Low-Power Operation
©2003 Micron Technology, Inc. All rights reserved.