AT25F512A 512Kbit,SPI接口串行Flash存储器

For new designs use AT25F512B. 512K-bit, SPI Bus Serial Flash, High Speed, SPI Mode 0 and 3.

The AT25F512A provides 524,288 bits of serial reprogrammable Flash memory organized as 65,536 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT25F512A is available in a space-saving 8-lead JEDEC SOIC and 8-lead SAP packages.

The AT25F512A is enabled through the Chip Select pin (CS) and accessed via a three-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). All write cycles are completely self-timed. Block write protection for the entire memory array is enabled by programming the status register. Separate write enable and write disable instructions are provided for additional data protection. Hardware data protection is provided via the Write Protect (WP) pin to protect against inadvertent write attempts to the status register. The HOLD pin may be used to suspend any serial communication without resetting the serial sequence.

AT25F512A 特性

• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
  – Datasheet Describes 0 Operation
• 33 MHz Clock Rate
• Byte Mode and 128-byte Page Mode for Program Operations
• Sector Architecture:
  – Two Sectors with 32K Bytes Each
  – 256 Pages per Sector
• Product Identification Mode
• Low-voltage Operation
  – 2.7 (VCC = 2.7 to 3.6V)
• Sector Write Protection
• Write Protect (WP) Pin and Write Disable Instructions for both Hardware and Software Data Protection
• Self-timed Program Cycle (75 μs/byte typical)
• Self-timed Sector Erase Cycle (1 second/sector typical)
• Single Cycle Reprogramming (Erase and Program) for Status Register
• High Reliability
  – Endurance: 10,000 Write Cycles Typical
  – Data Retention: 20 Years
• 8-lead JEDEC SOIC and 8-lead SAP Packages

AT25F512A 订购型号

AT25F512B 技术支持

1. ATMEL 爱特梅尔Flash 存储器AT25F512A 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. AT25F512A Reliability Qualification Report (Qualification, 4 pages, updated 8/05)
5. Programmer Support for Serial Flash Devices (Other, 8 pages, revision C, updated 4/08)