Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

M29W400DT Datasheet(PDF) 5 Page - STMicroelectronics

Part No. M29W400DT
Description  4 Mbit (512Kb x8 or 256Kb x16, Boot Block) 3V Supply Flash Memory
Download  38 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W400DT Datasheet(HTML) 5 Page - STMicroelectronics

  M29W400DT Datasheet HTML 1Page - STMicroelectronics M29W400DT Datasheet HTML 2Page - STMicroelectronics M29W400DT Datasheet HTML 3Page - STMicroelectronics M29W400DT Datasheet HTML 4Page - STMicroelectronics M29W400DT Datasheet HTML 5Page - STMicroelectronics M29W400DT Datasheet HTML 6Page - STMicroelectronics M29W400DT Datasheet HTML 7Page - STMicroelectronics M29W400DT Datasheet HTML 8Page - STMicroelectronics M29W400DT Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 38 page
background image
5/38
M29W400DT, M29W400DB
SUMMARY DESCRIPTION
The M29W400D is a 4 Mbit (512Kb x8 or 256Kb
x16) non-volatile memory that can be read, erased
and reprogrammed. These operations can be per-
formed using a single low voltage (2.7 to 3.6V)
supply. On power-up the memory defaults to its
Read mode where it can be read in the same way
as a ROM or EPROM.
The memory is divided into blocks that can be
erased independently so it is possible to preserve
valid data while old data is erased. Each block can
be protected independently to prevent accidental
Program or Erase commands from modifying the
memory. Program and Erase commands are writ-
ten 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.
The blocks in the memory are asymmetrically ar-
ranged, see Figures 6 and 7, Block Addresses.
The first or last 64 Kbytes have been divided into
four additional blocks. The 16 Kbyte Boot Block
can be used for small initialization code to start the
microprocessor, the two 8 Kbyte Parameter
Blocks can be used for parameter storage and the
remaining 32K is a small Main Block where the ap-
plication may be stored.
Chip Enable, Output Enable and Write Enable sig-
nals control the bus operation of the memory.
They allow simple connection to most micropro-
cessors, often without additional logic.
The memory is offered in SO44, TSOP48 (12 x
20mm), TFBGA48 0.8mm pitch (6 x 9mm and 6
x8mm) packages. The memory is supplied with all
the bits erased (set to ’1’).
In addition to the standard versions, the packages
are also available in Lead-free versions, in compli-
ance with JEDEC Std J-STD-020B, the ST ECO-
PACK 7191395 Specification, and the RoHS
(Restriction of Hazardous Substances) directive.
All packages are compliant with Lead-free solder-
ing processes.
Figure 2. Logic Diagram
Table 1. Signal Names
A0-A17
Address Inputs
DQ0-DQ7
Data Inputs/Outputs
DQ8-DQ14
Data Inputs/Outputs
DQ15A–1
Data Input/Output or Address Input
E
Chip Enable
G
Output Enable
W
Write Enable
RP
Reset/Block Temporary Unprotect
RB
Ready/Busy Output
BYTE
Byte/Word Organization Select
VCC
Supply Voltage
VSS
Ground
NC
Not Connected Internally
AI06853
18
A0-A17
W
DQ0-DQ14
VCC
M29W400DT
M29W400DB
E
VSS
15
G
RP
DQ15A–1
BYTE
RB


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn