AT25DF041A-MH-Y datasheet(4/41 Pages) ATMEL

Part #	AT25DF041A-MH-Y

Description	4-megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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4

3668D–DFLASH–9/08

AT25DF041A

3.

Block Diagram

4.

Memory Array

To provide the greatest flexibility, the memory array of the AT25DF041A can be erased in four

levels of granularity including a full chip erase. In addition, the array has been divided into phys-

ical sectors of various sizes, of which each sector can be individually protected from program

and erase operations. The sizes of the physical sectors are optimized for both code and data

storage applications, allowing both code and data segments to reside in their own isolated

regions. Figure 4-1 on page 5 illustrates the breakdown of each erase level as well as the break-

down of each physical sector.

FLASH

MEMORY

ARRAY

Y-GATING

CS

SCK

SO

SI

Y-DECODER

X-DECODER

I/O BUFFERS

AND LATCHES

CONTROL AND

PROTECTION LOGIC

SRAM

DATA BUFFER

WP

INTERFACE

CONTROL

AND

LOGIC

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AT25DF041A-MH-Y Datasheet(PDF) 4 Page - ATMEL Corporation

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