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Atmel Electronic Components Datasheet

AT26DF081A Datasheet

8-megabit 2.7-volt Minimum SPI Serial Flash Memory

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Features
Single 2.7V - 3.6V Supply
Serial Peripheral Interface (SPI) Compatible
– Supports SPI Modes 0 and 3
70 MHz Maximum Clock Frequency
Flexible, Uniform Erase Architecture
– 4-Kbyte Blocks
– 32-Kbyte Blocks
– 64-Kbyte Blocks
– Full Chip Erase
Individual Sector Protection with Global Protect/Unprotect Feature
– One 32-Kbyte Top Boot Sector
– Two 8-Kbyte Sectors
– One 16-Kbyte Sector
– Fifteen 64-Kbyte Sectors
Hardware Controlled Locking of Protected Sectors
Flexible Programming Options
– Byte/Page Program (1 to 256 Bytes)
– Sequential Program Mode Capability
Automatic Checking and Reporting of Erase/Program Failures
JEDEC Standard Manufacturer and Device ID Read Methodology
Low Power Dissipation
– 5 mA Active Read Current (Typical)
– 25 µA Deep Power-down Current (Typical)
Endurance: 100,000 Program/Erase Cycles
Data Retention: 20 Years
Complies with Full Industrial Temperature Range
Industry Standard Green (Pb/Halide-free/RoHS Compliant) Package Options
– 8-lead SOIC (150-mil and 200-mil wide)
8-megabit
2.7-volt
Minimum
SPI Serial Flash
Memory
AT26DF081A
1. Description
The AT26DF081A is a serial interface Flash memory device designed for use in a
wide variety of high-volume consumer-based applications in which program code is
shadowed from Flash memory into embedded or external RAM for execution. The
flexible erase architecture of the AT26DF081A, with its eras\e granularity as small as
4 Kbytes, makes it ideal for data storage as well, eliminating the need for additional
data storage EEPROM devices.
The physical sectoring and the erase block sizes of the AT26DF081A have been opti-
mized to meet the needs of today’s code and data storage applications. By optimizing
the size of the physical sectors and erase blocks, the memory space can be used
much more efficiently. Because certain code modules and data storage segments
must reside by themselves in their own protected sectors, the wasted and unused
memory space that occurs with large sectored and large block erase Flash memory
devices can be greatly reduced. This increased memory space efficiency allows addi-
tional code routines and data storage segments to be added while still maintaining the
same overall device density.
3600G–DFLASH–06/09


Atmel Electronic Components Datasheet

AT26DF081A Datasheet

8-megabit 2.7-volt Minimum SPI Serial Flash Memory

No Preview Available !

The AT26DF081A also offers a sophisticated method for protecting individual sectors against
erroneous or malicious program and erase operations. By providing the ability to individually pro-
tect and unprotect sectors, a system can unprotect a specific sector to modify its contents while
keeping the remaining sectors of the memory array securely protected. This is useful in applica-
tions where program code is patched or updated on a subroutine or module basis, or in
applications where data storage segments need to be modified without running the risk of errant
modifications to the program code segments. In addition to individual sector protection capabili-
ties, the AT26DF081A incorporates Global Protect and Global Unprotect features that allow the
entire memory array to be either protected or unprotected all at once. This reduces overhead
during the manufacturing process since sectors do not have to be unprotected one-by-one prior
to initial programming.
Specifically designed for use in 3-volt systems, the AT26DF081A supports read, program, and
erase operations with a supply voltage range of 2.7V to 3.6V. No separate voltage is required for
programming and erasing.
2 AT26DF081A
3600G–DFLASH–06/09


Part Number AT26DF081A
Description 8-megabit 2.7-volt Minimum SPI Serial Flash Memory
Maker ATMEL Corporation
Total Page 30 Pages
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