AT25DF161 datasheet(5/60 Pages) ATMEL

Part #	AT25DF161

Description	16-Megabit 2.7-volt Minimum SPI Serial Flash Memory

PDF	60 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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5 / 60 page

3687C–DFLASH–7/09

AT25DF161 [Preliminary]

3. Block Diagram

Figure 3-1.

Block Diagram

4. Memory Array

To provide the greatest flexibility, the memory array of the AT25DF161 can be erased in four lev-

els of granularity including a full chip erase. In addition, the array has been divided into physical

sectors of uniform size, of which each sector can be individually protected from program and

erase operations. The size of the physical sectors is optimized for both code and data storage

applications, allowing both code and data segments to reside in their own isolated regions. The

Memory Architecture Diagram illustrates the breakdown of each erase level as well as the

breakdown of each physical sector.

FLASH

MEMORY

ARRAY

Y-GATING

SCK

SO (SOI)

SI (SIO)

Y-DECODER

X-DECODER

I/O BUFFERS

AND LATCHES

CONTROL AND

PROTECTION LOGIC

SRAM

DATA BUFFER

INTERFACE

CONTROL

AND

LOGIC

HOLD

AT25DF161 Datasheet(PDF) 5 Page - ATMEL Corporation