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M29W400T Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M29W400T
Description  4 Mbit 512Kb x8 or 256Kb x16, Boot Block Low Voltage Single Supply Flash Memory
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M29W400T Datasheet(HTML) 1 Page - STMicroelectronics

 
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AI02065
18
A0-A17
W
DQ0-DQ14
VCC
M29W400T
M29W400B
E
VSS
15
G
RP
DQ15A–1
BYTE
RB
Figure 1. Logic Diagram
M29W400T
M29W400B
4 Mbit (512Kb x8 or 256Kb x16, Boot Block)
Low Voltage Single Supply Flash Memory
NOT FOR NEW DESIGN
M29W400T and M29W400B are replaced
respectively by the M29W400BT and
M29W400BB
2.7V to 3.6V SUPPLY VOLTAGE for
PROGRAM, ERASE and READ OPERATIONS
FAST ACCESS TIME: 90ns
FAST PROGRAMMING TIME
–10
µs by Byte / 16µs by Word typical
PROGRAM/ERASE CONTROLLER (P/E.C.)
– Program Byte-by-Byte or Word-by-Word
– Status Register bits and Ready/Busy Output
MEMORY BLOCKS
– Boot Block (Top or Bottom location)
– Parameter and Main blocks
BLOCK, MULTI-BLOCK and CHIP ERASE
MULTI BLOCK PROTECTION/TEMPORARY
UNPROTECTION MODES
ERASE SUSPEND and RESUME MODES
– Read and Program another Block during
Erase Suspend
LOW POWER CONSUMPTION
– Stand-by and Automatic Stand-by
100,000 PROGRAM/ERASE CYCLES per
BLOCK
20 YEARS DATA RETENTION
– Defectivity below 1ppm/year
ELECTRONIC SIGNATURE
– Manufacturer Code: 0020h
– Device Code, M29W400T: 00EEh
– Device Code, M29W400B: 00EFh
DESCRIPTION
The M29W400 is a non-volatile memory that may
be erased electrically at the block or chip level and
programmed in-system on a Byte-by-Byte or Word-
by-Word basis using only a single 2.7V to 3.6V VCC
supply. For Program and Erase operations the
necessary high voltages are generated internally.
The device can also be programmed in standard
programmers.
The array matrix organisation allows each block to
be erased and reprogrammed without affecting
other blocks. Blocks can be protected against pro-
graming and erase on programming equipment,
November 1999
1/34
This is information on a product still in productionbut not recommended for new designs.
44
1
SO44 (M)
TSOP48 (N)
12 x 20 mm
BGA
FBGA48 (ZA)
8 x 6 solder balls


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