M29W128GH70N3E Datasheet, PDF (8/94 Pages) Numonyx B.V – 128-Mbit (16 Mbit x8 or 8 Mbit x16, page, uniform block) 3 V supply flash memory

Description
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Description
M29W128GH, M29W128GL
The M29W128GH and M29W128GL are 128-Mbit (8 Mbit x16 or 16 Mbit x8) non-volatile
flash memories that can be read, erased and reprogrammed. These operations can be
performed using a single low voltage (2.7 to 3.6 V) supply. On power-up the memory
defaults to its read mode.
The memory array is divided into 64-Kword/128-Kbyte uniform blocks that can be erased
independently so it is possible to preserve valid data while old data is erased. 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
logic.
The M29W128GH and M29W128GL support asynchronous random read and page read
from all blocks of the memory array. The devices also feature a write to buffer program
capability that improves the programming throughput by programming in one shot a buffer of
32 words/64 bytes. The enhanced buffered program feature is also available to speed up
the programming throughput, allowing to program 256 words in one shot (only in x16 mode).
The V_PP/WP signal can be used to enable faster programming of the device.
The M29W128GH and M29W128GL have an extra block, the extended block, of 128 words
in x16 mode or of 256 bytes in x8 mode 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 not reversible, once protected the protection cannot be undone.
The device features different levels of hardware and software block protection to avoid
unwanted program or erase (modify):
„ Hardware protection:
– The V_PP/WP provides a hardware protection of the highest and lowest block on
the M29W128GH, M29W128GL, respectively.
„ Software protection:
– Volatile protection
– Non-volatile protection
– Password protection
The M29W128GH and M29W128GL are offered in TSOP56 (14 x 20 mm), and TBGA64
(10 x 13 mm, 1 mm pitch), packages. The memories are delivered with all the bits erased
(set to ‘1’).
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