AT25DF321A-SH-B Atmel, AT25DF321A-SH-B Datasheet - Page 4

• Manufacturer Part Number: AT25DF321A-SH-B
• Description: IC FLASH 32MBIT 100MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT25DF321A-SH-B

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 32M (16384 pages x 256 Bytes)
• Speed: 100MHz
• Interface: SPI, RapidS
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Memory Configuration: 16384 Pages X 256 Bytes
• Interface Type: Serial, SPI
• Clock Frequency: 100MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SOIC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.
4.
4
Block Diagram
Figure 3-1.
Memory Array
To provide the greatest flexibility, the memory array of the Atmel
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.
Figure 2-1.
SO (SOI)
Atmel AT25DF321A
SI (SIO)
HOLD
SO (SOI)
SCK
WP
CS
GND
WP
CS
Block Diagram
8-SOIC (Top View)
1
2
3
4
INTERFACE
CONTROL
LOGIC
AND
8
7
6
5
VCC
HOLD
SCK
SI (SIO)
PROTECTION LOGIC
CONTROL AND
Figure 2-2.
Y-DECODER
X-DECODER
SO (SOI)
®
AT25DF321A can be erased in four levels of granularity
GND
WP
CS
8-UDFN (Top View)
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI (SIO)
AND LATCHES
MEMORY
I/O BUFFERS
Y-GATING
ARRAY
FLASH
DATA BUFFER
SRAM
3686D–DFLASH–12/09