E28F001BX-T120 View Datasheet(PDF) - Intel

Part Name

Description

Manufacturer

E28F001BX-T120

1-MBIT (128K x 8) BOOT BLOCK FLASH MEMORY

Intel 

28F001BX-T 28F001BX-B

Figure 4 PLCC Lead Configuration

290406 – 4

APPLICATIONS

The 28F001BX flash ‘boot block’ memory augments

the non-volatility in-system electrical erasure and

reprogrammability of Intel’s standard flash memory

by offering four separately erasable blocks and inte-

grating a state machine to control erase and pro-

gram functions The specialized blocking architec-

ture and automated programming of the 28F001BX

provide a full-function non-volatile flash memory

ideal for a wide range of applications including PC

boot BIOS memory minimum-chip embedded pro-

gram memory and parametric data storage The

28F001BX combines the safety of a hardware-pro-

tected 8-KByte boot block with the flexibility of three

separately reprogrammable blocks (two 4-KByte pa-

rameter blocks and one 112-KByte code block) into

one versatile cost-effective flash memory Addition-

ally reprogramming one block does not affect code

stored in another block ensuring data integrity

The flexibility of flash memory reduces costs

throughout the life cycle of a design During the early

stages of a system’s life flash memory reduces pro-

totype development and testing time allowing the

system designer to modify in-system software elec-

trically versus manual removal of components Dur-

ing production flash memory provides flexible firm-

ware for just-in-time configuration reducing system

inventory and eliminating unnecessary handling and

less reliable socketed connections Late in the life

cycle when software updates or code ‘‘bugs’’ are

often unpredictable and costly flash memory reduc-

es update costs by allowing the manufacturers to

send floppy updates versus a technician Alterna-

tively remote updates over a communication link are

possible at speeds up to 9600 baud due to flash

memory’s fast programming time

4

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