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AT25DF161-SH-B Datasheet(PDF) 5 Page - ATMEL Corporation

Part # AT25DF161-SH-B
Description  16-Megabit 2.7-volt Minimum SPI Serial Flash Memory
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT25DF161-SH-B Datasheet(HTML) 5 Page - ATMEL Corporation

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5
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
CS
SCK
SO (SOI)
SI (SIO)
Y-DECODER
X-DECODER
I/O BUFFERS
AND LATCHES
CONTROL AND
PROTECTION LOGIC
SRAM
DATA BUFFER
WP
INTERFACE
CONTROL
AND
LOGIC
HOLD


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