at25df081 ATMEL Corporation, at25df081 Datasheet - Page 4

• Manufacturer Part Number: at25df081
• Description: 8-megabit 1.65-volt Minimum Spi Serial Flash Memory
• Manufacturer: ATMEL Corporation

3. Block Diagram
4. Memory Array
4
Figure 2-1.
GND
WP
SO
CS
AT25DF081
HOLD
1
2
3
4
SCK
8-SOIC Top View
WP
SO
CS
SI
8
7
6
5
To provide the greatest flexibility, the memory array of the AT25DF081 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.
down of each physical sector.
VCC
HOLD
SCK
SI
INTERFACE
CONTROL
LOGIC
AND
Figure 4-1 on page 5
Figure 2-2.
GND
WP
SO
CS
PROTECTION LOGIC
1
2
3
4
CONTROL AND
8-UDFN Top View
illustrates the breakdown of each erase level as well as the break-
X-DECODER
Y-DECODER
8
7
6
5
VCC
HOLD
SCK
SI
Figure 2-3.
AND LATCHES
I/O BUFFERS
MEMORY
ARRAY
Y-GATING
FLASH
C
D
A
B
E
F
DATA BUFFER
11-dBGA (Top View
Through Back of Die)
NC
1
HOLD
SRAM
VCC
SCK
SI
2
GND
WP
CS
SO
3
NC
NC
3674D–DFLASH–1/08
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