AT25256A 256Kbit,SPI接口串行EEPROM存储器

256Kbit, SPI Bus Serial Automotive EEPROM, supports Mode 0 and 3 operation.

• 128KBEEPROM存储器：AT25128A 汽车级
• 256KBEEPROM存储器：AT25256A 汽车级

The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable programmable read-only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The device is optimized for use in many industrial and automotive applications where low-power and low-voltage operation are essential. The devices are available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. The AT25128A/256A 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 programming cycles are completely self-timed, and no separate erase cycle is required before write.

AT25256A 特性

• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
  – Data Sheet Describes Mode 0 Operation
• Standard-voltage Operation
  – 2.7 (VCC = 2.7V to 5.5V)
• Automotive Temperature Range ?40°C to +125°C
• 5 MHz Clock Rate
• 64-byte Page Mode and Byte Write Operation
• Block Write Protection
  – Protect 1/4, 1/2, or Entire Array
• Write Protect (WP) Pin and Write Disable Instructions for both Hardware and Software Data Protection
• Self-timed Write Cycle (5 ms max)
• High Reliability
  – Endurance: 1 Million Write Cycles
  – Data Retention: >100 Years
• 8-lead JEDEC SOIC and 8-lead TSSOP Packages

AT25256A 订货型号

AT25256A 技术支持

1. ATMEL 爱特梅尔汽车级EEPROM存储器AT25256A 数据手册DataSheet 下载. PDF（完整版）
2. 串行EEPROM 产品选型指南（ Excel 文档格式）
3. 中文版ATMEL 汽车应用解决方案 . pdf
4. 英文版ATMEL 汽车应用解决方案 . pdf
5. 嵌入式系统中EEPROM文件系统的设计与实现 . PDF
6. ATMEL 爱特梅尔公司全线产品目录. pdf