AT25DF161 16Mbit,SPI接口串行Flash存儲器

16-Mbit, 2.7V-Minimum, 100 MHz SPI Serial Flash Memory, Byte and Page Program, Block Erase (4KB, 32KB, and 64KB) and Chip Erase, Individual Sector Protection with Global Protect/Unprotect Feature, Hardware and Software Locking, Sector Lockdown (ROM), Security Register, Program/Erase Suspend/Resume, Automatic Program/Erase Fail Reporting, Dual-Input Programming, Dual-Output Read, JEDEC Standard ID, 8-lead SOIC (150-mil and 208-mil) and 8-pad UDFN (5 x 6 x 0.6 mm)

The AT25DF161 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 AT25DF161, 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 AT25DF161 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 AT25DF161 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 AT25DF161 incorporates Global Protect and Global Unprotect features that allow theentire 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. To take code and data protection to the next level, the AT25DF161 incorporates a sector lockdown mechanism that allows any combination of individual 64-Kbyte sectors to be locked down and become permanently read-only. This addresses the need of certain secure applications that require portions of the Flash memory array to be permanently protected against malicious attempts at altering program code, data modules, security information, or encryption/decryption algorithms, keys, and routines. The device also contains a specialized OTP (One-Time Programmable)

Security Register that can be used for purposes such as unique device serialization, system-level Electronic Serial Number (ESN) storage, locked key storage, etc. Specifically designed for use in 3-volt systems, the AT25DF161 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.

AT25DF161 特性

• Single 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
  – Supports SPI Modes 0 and 3
  – Supports RapidS? Operation
  – Supports Dual-Input Program and Dual-Output Read
• Very High Operating Frequencies
  – 100 MHz for RapidS
  – 85 MHz for SPI
  – Clock-to-Output (tV) of 5 ns Maximum
• Flexible, Optimized Erase Architecture for Code + Data Storage Applications
  – Uniform 4-Kbyte Block Erase
  – Uniform 32-Kbyte Block Erase
  – Uniform 64-Kbyte Block Erase
  – Full Chip Erase
• Individual Sector Protection with Global Protect/Unprotect Feature
  – 32 Sectors of 64-Kbytes Each
• Hardware Controlled Locking of Protected Sectors via WP Pin
• Sector Lockdown
  – Make Any Combination of 64-Kbyte Sectors Permanently Read-Only
• 128-Byte Programmable OTP Security Register
• Flexible Programming
  – Byte/Page Program (1 to 256 Bytes)
• Fast Program and Erase Times
  – 1.0 ms Typical Page Program (256 Bytes) Time
  – 50 ms Typical 4-Kbyte Block Erase Time
  – 250 ms Typical 32-Kbyte Block Erase Time
  – 400 ms Typical 64-Kbyte Block Erase Time
• Program and Erase Suspend/Resume
• Automatic Checking and Reporting of Erase/Program Failures
• Software Controlled Reset
• JEDEC Standard Manufacturer and Device ID Read Methodology
• Low Power Dissipation
  – 5 mA Active Read Current (Typical at 20 MHz)
  – 1 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 208-mil wide)
  – 8-pad Ultra Thin DFN (5 x 6 x 0.6 mm)

AT25DF161 訂購型號

AT25DF161 技術支持

1. ATMEL 愛特梅爾Flash 存儲器AT25DF161 數據手冊DataSheet 下載. PDF（PDF 文件格式完整版）
2. 串行Flash 產品選型指南（ Excel 文檔格式）
3. ATMEL 愛特梅爾公司全線產品目錄. pdf