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M29W320EB View Datasheet(PDF) - Numonyx -> Micron

Part Name
M29W320EB Datasheet PDF : 63 Pages
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M29W320ET, M29W320EB
The M29W320E is a 32 Mbit (4Mb x8 or 2Mb x16) non-volatile memory that can be read,
erased and reprogrammed. These operations can be performed using a single low voltage
(2.7 to 3.6V) supply. On power-up the memory defaults to its Read mode.
The device features an asymmetrical block architecture. The M29W320E has an array of 8
parameter and 63 main blocks. M29W320ET locates the Parameter Blocks at the top of the
memory address space while the M29W320EB locates the Parameter Blocks starting from
the bottom.
M29W320E has an extra 32 Kword (x16 mode) or 64 Kbyte (x8 mode) block, the Extended
Block, that can be accessed using a dedicated command. The Extended Block can be
protected and so is useful for storing security information. However the protection is
irreversible, once protected the protection cannot be undone.
Each block can be erased independently so it is possible to preserve valid data while old
data is erased. The blocks can be protected to prevent accidental Program or Erase
commands from modifying the memory. Program and Erase commands are written to the
Command interface of the memory. An on-chip Program/Erase Controller simplifies the
process of programming or erasing the memory by taking care of all of the special
operations that are required to update the memory contents. The end of a program or erase
operation can be detected and any error conditions identified. The command set required to
control the memory is consistent with JEDEC standards.
Chip Enable, Output Enable and Write Enable signals control the bus operation of the
memory. They allow simple connection to most microprocessors, often without additional
The memory is offered in TSOP48 (12x20mm), and TFBGA48 (6x8mm, 0.8mm pitch)
packages. In order to meet environmental requirements, Numonyx offers the M29W320E in
ECOPACK® packages. ECOPACK packages are Lead-free. The category of second Level
Interconnect is marked on the package and on the inner box label, in compliance with
JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also
marked on the inner box label.
The memory is supplied with all the bits erased (set to ’1’).
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