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Broadest Product Offering, Most Feature Rich Architectures
Atmel revolutionized the nonvolatile memory industry in 1997 by releasing the world’s first Serial Flash memory devices, the AT45DB series DataFlash®. Today, Atmel continues the innovative tradition by offering a variety of Serial Flash families that incorporate some of the industry’s most advanced and flexible features, many of which are unparalleled by other solutions on the market. With a long-standing 25-year history in nonvolatile memories, Atmel has developed proven and robust NOR Flash technology that is utilized on all of Atmel’s Serial Flash devices.
The AT45DB series DataFlash family provides system developers with an extremely flexible solution by utilizing a page-erase architecture to allow the smallest amount of data (as little as 256 bytes) to be erased compared to any other Flash solution on the market today. With the DataFlash, a single byte of data can also be altered by using the on-board SRAM buffers to perform a totally self-contained read-modify-write operation. Coupled with advanced protection and security features, the DataFlash is ideal for many high-volume applications that need to rely upon a memory device to provide secure, tamper-proof code and data storage.
The AT25D series Serial Flash family incorporates a uniform block-erase (4-KBytes, 32-KBytes, and 64-KBytes) architecture to provide a high level of flexibility for a wide variety of code storage applications. Similar to the DataFlash, the AT25D series devices feature advanced security and protection functions to prevent critical code blocks from being erroneously or maliciously altered. In addition, the AT25D series devices are pin-compatible with Atmel’s Serial EEPROMs, giving developers the flexibility to increase memory size without changing the board layout.
Key Features
- Flexible offering — With two Serial Flash families to choose from, system designers can select the device that best meets their specific application requirements for storing any type of data whether it is boot code, program code, vital preference data or logged data.
- SPI interface — The simple serial peripheral interface (SPI) greatly reduces pin counts and simplifies routing, which conserves circuit board space and reduces switching noise, manufacturing complexity, and lowers overall system cost.
- Superior functionality — The full-featured DataFlash family takes SPI Serial Flash to the next level with its flexible page erase architecture and its advanced protection and security features to enable system integration, robustness and cost reduction.
- Easy migration — All Atmel SPI devices are pin-compatible and require only 4 pins to connect to the MCU allowing for an easy migration path to higher densities without any board changes.
- Tamper proof — The advanced security and protection features allow any combination of sectors to be individually protected and/or permanently locked to ensure vital code and data remains protected while other portions of memory are updated.
- Page erase — The DataFlash’s small page erase architecture allows key software routines, parameters and user data to be stored more efficiently, so that memory space isn't wasted by having to allocate large sectors for different types of code or data.
- Block erase — While not as granular as DataFlash, the uniform block erase architecture in the AT25D series is ideal for embedded code and data storage in a wide variety of applications.
Serial Flash Devices
| Device Family |
Summary Benefit |
Applications |
Technologies |
Key Parameters |
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SPI compatible Serial Flash Page erase architecture allows erasing as little as 256 bytes of memory Extra memory in every device (up to 2-Mbits extra in a 64-Mbit device) Advanced memory protection and security features to better protect firmware and data |
Code shadowing and data storage applications such as Smart Energy Meters, STBs (set-top boxes), GbE LAN controllers, DECT phones, industrial controls, etc. |
Low voltage operation
Dual, independent SRAM buffers
Configurable page size
Individual sector protection
Individual sector lockdown (ROM)
128-byte security register
Program/erase suspend and resume |
1-Mbit to 64-Mbits
Up to 100MHz operation
Dual-I/O and Quad-I/O
As low as 2.3V operation
8-lead SOIC and UDFN
BGA/WLCSP options |
Feature-rich, page erase (as small as 256 bytes) SPI-compatible Serial Flash with advanced protection and security features to provide developers with the most flexible, easy-to-use Serial Flash solution on the market to address virtually any application. Dual-I/O and Quad-I/O interface options provide the ability to double and quadruple read throughputs.
Learn more
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SPI compatible Serial Flash
Block erase architecture (4KB, 32KB, and 64KB)
Advanced memory protection and security features to better protect firmware and data |
Code shadowing and data storage applications such as PC BIOS, DVD players, LCD TVs, portable consumer products, etc. |
Low voltage operation
Individual sector protection
Individual sector lockdown (ROM)
128-byte security register
Program/erase suspend and resume |
512-Kbit to 64-Mbits
Up to 100MHz operation
Dual-I/O
As low as 2.3V operation
8-lead SOIC and UDFN
BGA/WLCSP options |
SPI-compatible block erase Serial Flash with erase sizes of 4KB, 32KB, and 64KB to provide flexibility for code and data management. Devices provide advanced protection and security features to further enhance code and data stability, and increased read throughputs can be attained by using the Dual-I/O mode of the devices.
Learn more
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|
|
SPI compatible Serial Flash
Block erase architecture (4KB, 32KB, and 64KB)
Advanced memory protection and security features to better protect firmware and data |
Code shadowing and data storage applications such as PC BIOS, DVD players, LCD TVs, portable consumer products, etc. |
Low voltage operation
Individual sector protection
Individual sector lockdown (ROM)
128-byte security register
Program/erase suspend and resume |
8-Mbit to 64-Mbits
Up to 100MHz operation
Dual-I/O and Quad-I/O
As low as 2.3V operation
8-lead SOIC and UDFN
BGA/WLCSP options |
SPI-compatible block erase Serial Flash with a Quad-I/O interface option to meet the demands of higher performance applications. Block erase sizes of 4KB, 32KB, and 64KB provide flexibility for code and data management while advanced protection and security features further enhance code and data stability
Learn more
|
|
|
SPI compatible Serial Flash
Block erase architecture (4KB, 32KB, and 64KB)
Advanced memory protection and security features to better protect firmware and data |
Code shadowing and data storage applications such as PC BIOS, DVD players, LCD TVs, portable consumer products, etc. |
Low voltage operation
Individual sector protection
Individual sector lockdown (ROM)
128-byte security register
Program/erase suspend and resume |
Up to 100MHz operation
Dual-I/O
As low as 1.65V operation
8-lead SOIC and UDFN
BGA/WLCSP options |
Ultra low-voltage (1.65V minimum) SPI-compatible block erase Serial Flash designed specifically for low-voltage, low-power portable applications. Block erase sizes of 4KB, 32KB, and 64KB provide flexibility for code and data management while advanced protection and security features further enhance code and data stability. For improved performance, increased read throughputs can be attained by using the Dual-I/O mode of the devices.
Learn more
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