Datenblatt-pdf.com


E28F004BX-B80 Schematic ( PDF Datasheet ) - Intel Corporation

Teilenummer E28F004BX-B80
Beschreibung 4-MBIT (256K X 16/ 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY
Hersteller Intel Corporation
Logo Intel Corporation Logo 




Gesamt 30 Seiten
E28F004BX-B80 Datasheet, Funktion
4-MBIT (256K X 16 512K X 8)
BOOT BLOCK
FLASH MEMORY FAMILY
28F400BX-T B 28F004BX-T B
Y x8 x16 Input Output Architecture
28F400BX-T 28F400BX-B
For High Performance and High
Integration 16-bit and 32-bit CPUs
Y x8-only Input Output Architecture
28F004BX-T 28F004BX-B
For Space Constrained 8-bit
Applications
Y Upgradeable to Intel’s Smart Voltage
Products
Y Optimized High-Density Blocked
Architecture
One 16-KB Protected Boot Block
Two 8-KB Parameter Blocks
One 96-KB Main Block
Three 128-KB Main Blocks
Top or Bottom Boot Locations
Y Extended Cycling Capability
100 000 Block Erase Cycles
Y Automated Word Byte Write and Block
Erase
Command User Interface
Status Registers
Erase Suspend Capability
Y SRAM-Compatible Write Interface
Y Automatic Power Savings Feature
1 mA Typical ICC Active Current in
Static Operation
Y Very High-Performance Read
60 80 120 ns Maximum Access Time
30 40 40 ns Maximum Output Enable
Time
Y Low Power Consumption
20 mA Typical Active Read Current
Y Reset Deep Power-Down Input
0 2 mA ICC Typical
Acts as Reset for Boot Operations
Y Extended Temperature Operation
b40 C to a85 C
Y Write Protection for Boot Block
Y Hardware Data Protection Feature
Erase Write Lockout During Power
Transitions
Y Industry Standard Surface Mount
Packaging
28F400BX JEDEC ROM Compatible
44-Lead PSOP
56-Lead TSOP
28F004BX 40-Lead TSOP
Y 12V Word Byte Write and Block Erase
VPP e 12V g5% Standard
VPP e 12V g10% Option
Y ETOXTM III Flash Technology
5V Read
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT INTEL CORPORATION 1995
November 1995
Order Number 290451-005






E28F004BX-B80 Datasheet, Funktion
28F400BX-T B 28F004BX-T B
290451 – 4
Figure 1 28F400BX Interface to Intel386TMEX Embedded Processor
290451 – 24
Figure 2 28F004BX Interface to INTEL 80C188EB 8-Bit Embedded Processor
6

6 Page









E28F004BX-B80 pdf, datenblatt
28F400BX-T B 28F004BX-T B
2 1 28F400BX Memory Organization
2 1 1 BLOCKING
The 28F400BX uses a blocked array architecture to
provide independent erasure of memory blocks A
block is erased independently of other blocks in the
array when an address is given within the block ad-
dress range and the Erase Setup and Erase Confirm
commands are written to the CUI The 28F400BX is
a random read write memory only erasure is per-
formed by block
2 1 1 1 Boot Block Operation and Data
Protection
The 16-Kbyte boot block provides a lock feature for
secure code storage The intent of the boot block is
to provide a secure storage area for the kernel code
that is required to boot a system in the event of pow-
er failure or other disruption during code update
This lock feature ensures absolute data integrity by
preventing the boot block from being written or
erased when RP is not at 12V The boot block can
be erased and written when RP is held at 12V for
the duration of the erase or program operation This
allows customers to change the boot code when
necessary while providing security when needed
See the Block Memory Map section for address lo-
cations of the boot block for the 28F400BX-T and
28F400BX-B
2 1 1 2 Parameter Block Operation
The 28F400BX has 2 parameter blocks (8-Kbytes
each) The parameter blocks are intended to provide
storage for frequently updated system parameters
and configuration or diagnostic information The pa-
rameter blocks can also be used to store additional
boot or main code The parameter blocks however
do not have the hardware write protection feature
that the boot block has The parameter blocks pro-
vide for more efficient memory utilization when deal-
ing with parameter changes versus regularly blocked
devices See the Block Memory Map section for ad-
dress locations of the parameter blocks for the
28F400BX-T and 28F400BX-B
2 1 1 3 Main Block Operation
Four main blocks of memory exist on the 28F400BX
(3 x 128-Kbyte blocks and 1 x 96-Kbyte blocks) See
the following section on Block Memory Map for the
address location of these blocks for the 28F400BX-T
and 28F400BX-B products
2 1 2 BLOCK MEMORY MAP
Two versions of the 28F400BX product exist to sup-
port two different memory maps of the array blocks
in order to accommodate different microprocessor
protocols for boot code location The 28F400BX-T
memory map is inverted from the 28F400BX-B
memory map
2 1 2 1 28F400BX-B Memory Map
The 28F400BX-B device has the 16-Kbyte boot
block located from 00000H to 01FFFH to accommo-
date those microprocessors that boot from the bot-
tom of the address map at 00000H In the
28F400BX-B the first 8-Kbyte parameter block re-
sides in memory space from 02000H to 02FFFH
The second 8-Kbyte parameter block resides in
memory space from 03000H to 03FFFH The
96-Kbyte main block resides in memory space from
04000H to 0FFFFH The three 128-Kbyte main
block resides in memory space from 10000H to
1FFFFH 20000H to 2FFFFH and 30000H to
3FFFFH (word locations) See Figure 7
(Word Addresses)
3FFFFH
128-Kbyte MAIN BLOCK
30000H
2FFFFH
128-Kbyte MAIN BLOCK
20000H
1FFFFH
128-Kbyte MAIN BLOCK
10000H
0FFFFH
96-Kbyte MAIN BLOCK
04000H
03FFFH
03000H
02FFFH
02000H
01FFFH
8-Kbyte PARAMETER BLOCK
8-Kbyte PARAMETER BLOCK
16-Kbyte BOOT BLOCK
00000H
Figure 7 28F400BX-B Memory Map
12

12 Page





SeitenGesamt 30 Seiten
PDF Download[ E28F004BX-B80 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
E28F004BX-B804-MBIT (256K X 16/ 512K X 8) BOOT BLOCK FLASH MEMORY FAMILYIntel Corporation
Intel Corporation

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche