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M50LPW041 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. M50LPW041
Description  4 Mbit 512Kb x8, Uniform Block 3V Supply Low Pin Count Flash Memory
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M50LPW041 Datasheet(HTML) 2 Page - STMicroelectronics

 
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Figure 2. Logic Diagram (A/A Mux Interface)
AI05786
11
RC
DQ0-DQ7
VCC
M50LPW041
IC
VSS
8
G
W
RB
RP
A0-A10
VPP
DESCRIPTION
The M50LPW041 is a 4 Mbit (512Kb x8) non-
volatile memory that can be read, erased and
reprogrammed.
These
operations
can
be
performed using a single low voltage (3.0 to 3.6V)
supply. For fast programming and fast erasing in
production lines an optional 12V power supply can
be used to reduce the programming and the
erasing times.
The memory is divided into blocks that can be
erased independently so it is possible to preserve
valid data while old data is erased. Blocks can be
protected
individually
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.
Two different bus interfaces are supported by the
memory. The primary interface is the Low Pin
Count (or LPC) Standard Interface. This has been
Figure 3. PLCC Connections
Note: Pins 27 and 28 are not internally connected.
AI05788
NC
LFRAME
17
ID1
ID0
LAD0
GPI1
TBL
ID3
ID2
GPI0
WP
9
VSS
1
VCC
NC
RFU
32
M50LPW041
IC (VIL)
INIT
RFU
25
A1
A0
DQ0
A7
A4
A3
A2
A6
A5
NC
W
VSS
VCC
NC
DQ7
IC (VIH)
G
RB
A/A Mux
A/A Mux
A/A Mux
A/A Mux


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