M29W640GB NUMONYX [Numonyx B.V], M29W640GB Datasheet - Page 8

• Manufacturer Part Number: M29W640GB
• Description: 64 Mbit (8Mb x8 or 4Mb x16, Page) 3V supply Flash memory
• Manufacturer: NUMONYX [Numonyx B.V]

Description
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The M29W640G has 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 M29W640GT, M29W640GB, M29W640GH and M29W640GL, are offered in TSOP48
(12x 20mm), TSOP56 (14x 20mm), TFBGA48 (6 x8mm, 0.8mm pitch), and TBGA64 (10x
13mm, 1mm pitch) packages.
In order to meet environmental requirements, Numonyx offers the M29W640GH,
M29W640GL, M29W640GT and M29W640GB in 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 delivered with all the bits erased (set to 1).
Figure 1.
Logic diagram
A0-A21
RP
W
G
E
22
M29W640GH, M29W640GL, M29W640GT, M29W640GB
V CC
V SS
M29W640GB
M29W640GH
M29W640GT
M29W640GL
V PP /WP
15
DQ0-DQ14
DQ15A–1
BYTE
RB
®
packages. ECOPACK
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