DT28F320S3-120 datasheet(11/52 Pages) INTEL

Part #	DT28F320S3-120

Description	WORD-WIDE FlashFile MEMORY FAMILY

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Manufacturer	INTEL [Intel Corporation]

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E

28F160S3, 28F320S3

11

ADVANCE INFORMATION

Commands are written using standard micro-

processor write timings. The CUI contents serve

as input to the WSM that controls the block

erase, programming, and lock-bit configuration.

The internal algorithms are regulated by the

WSM,

including

pulse

repetition,

internal

verification, and margining of data. Addresses

and data are internally latched during write

cycles. Writing the appropriate command outputs

array data, identifier codes, or Status Register

data.

Interface

software

that

initiates

and

polls

progress of block erase, programming, and lock-

bit configuration can be stored in any block. This

code is copied to and executed from system

RAM

during

flash

memory

updates.

After

successful completion, reads are again possible

via the Read Array command. Block erase

suspend allows system software to suspend a

block erase to read or write data from any other

block. Program suspend allows system software

to suspend a program to read data from any

other flash memory array location.

2.1

Data Protection

Depending

on

the

application,

the

system

designer may choose to make the VPP power

supply switchable or hardwired to VPPH1/2. The

device supports either design practice, and

encourages

optimization

of

the

processor-

memory interface.

When VPP

≤ VPPLK, memory contents cannot be

altered. When high voltage is applied to VPP, the

two-step

block

erase,

program,

or

lock-bit

configuration

command

sequences

provide

protection from unwanted operations. All write

functions are disabled when VCC voltage is below

the write lockout voltage VLKO or when RP# is at

VIL.

The

device’s

block

locking

capability

provides additional protection from inadvertent

code or data alteration.

Figure 5. Memory Map

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DT28F320S3-120 Datasheet(PDF) 11 Page - Intel Corporation

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