AT26F004 4Mbit,串行DataFlash存储器

For new designs use AT25DF041A. 4-Mbit Serial Firmware DataFlash?, SPI Mode 0 and 3 Compatible, Byte Program with Sequential Byte Program Mode, Block Erase (4KB, 32KB and 64KB), Individual Sector Protection, Hardware and Software Locking, JEDEC Standard ID, 8-lead SOIC and 8-Contact MLF.

The AT26F004 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 AT26F004, 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 AT26F004 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 AT26F004 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. Specifically designed for use in 3-volt systems, the AT26F004 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.

AT26F004 特性

• Single 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
  – Supports SPI Modes 0 and 3
• 33 MHz Maximum Clock Frequency
• Flexible, Uniform Erase Architecture
  – 4-Kbyte Blocks
  – 32-Kbyte Blocks
  – 64-Kbyte Blocks
  – Full Chip Erase
• Optimized Physical Sectoring for Code Shadowing and Code + Data Storage
  Applications
  – One 16-Kbyte Top Boot Sector
  – Two 8-Kbyte Sectors
  – One 32-Kbyte Sector
  – Seven 64-Kbyte Sectors
• Individual Sector Protection for Program/Erase Protection
• Hardware Controlled Locking of Protected Sectors
• Byte Program Architecture with Sequential Byte Program Mode Capability
  – Sequential Byte Program Mode Improves Throughput for
  Programming Multiple Bytes
• JEDEC Standard Manufacturer and Device ID Read Methodology
• Low Power Dissipation
  – 7 mA Active Read Current (Typical)
  – 15 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
  – 8-lead MLF

AT26F004 订购型号

AT26F004 技术支持

1. ATMEL 爱特梅尔Flash 存储器AT26F004 数据手册DataSheet 下载. PDF（PDF 文件格式完整版）
2. 串行Flash 产品选型指南（ Excel 文档格式）
3. ATMEL 爱特梅尔公司全线产品目录. pdf
4. Programmer Support for Serial Flash Devices. pdf (Other, 8 pages, revision C, updated 4/08)
5. MicroLeadFrame Packages Pad Landing Recommendations (15 pages, revision B, updated 09/06) pdf
   This application note provides PCB designers with a set of guidelines for successful board mounting of Atmel's DataFlash memories housed in the MicroLeadFrame (MLF) package