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首页＞ATMEL 爱特梅尔＞DataFlash存储器＞AT25DF081

ATMEL 爱特梅尔串行FLASH 存储器AT25DF081

AT25DF081 概述

The AT25DF081 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 AT25DF081, with its erase 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 AT25DF081 have been optimized 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 additional
code routines and data storage segments to be added while still maintaining the same overall device density. The AT25DF081 also offers a sophisticated method for protecting individual sectors against
erroneous or malicious program and erase operations. By providing the ability to individually protect
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 applications
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 capabilities,
the AT25DF081 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 1.8-volt systems, the AT25DF081 supports read, program, and
erase operations with a supply voltage range of 1.65V to 1.95V. No separate voltage is required
for programming and erasing. AT25DF081 特性

• Single 1.65V - 1.95V Supply
  • Serial Peripheral Interface (SPI) Compatible
  – Supports SPI Modes 0 and 3
  • 66 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
  – Sixteen 64-Kbyte Physical Sectors
  • Hardware Controlled Locking of Protected Sectors
  • Flexible Programming
  – Byte/Page Program (1 to 256 Bytes)
  • Automatic Checking and Reporting of Erase/Program Failures
  • JEDEC Standard Manufacturer and Device ID Read Methodology
  • Low Power Dissipation
  – 7 mA Active Read Current (Typical)
  – 8 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 wide)
  – 8-contact Ultra Thin DFN (5 mm x 6 mm x 0.6 mm)
  – 11-ball dBGA (WLCSP)

AT25DF081 订购型号