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AT24C256 256Kbit,2线串行EEPROM存储器

Density	256K
Interface Type	2-WIRE
Organization	32768x 8
Vcc (V)	2.7
Pb-Free Packages	TSSOP 8 PDIP 8 SOIC 8

256Kbit 2-Wire Bus Serial Automotive EEPROM with full memory Write Protect, supports up to 4 devices on single 2-Wire bus.

• 128KBEEPROM存储器：AT24C128 汽车级
• 256KBEEPROM存储器：AT24C256 汽车级

The AT24C128/256 provides 131,072/262,144 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The device’s cascadable feature allows up to 4 devices to share a common Two-wire bus. The device is optimized for use in many automotive applications where low power and low voltage operation are essential. The AT24C128 is available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. The AT24C256 is available in a space-saving 8-lead JEDEC SOIC package. In addition, the entire family is available in 2.7V (2.7V to 5.5V) version.

AT24C256 特性

• Low-voltage and Standard-voltage Operation
  – 2.7 (VCC = 2.7V to 5.5V)
• Internally Organized 16,384 x 8 and 32,768 x 8
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 400 kHz Compatibility
• Write Protect Pin for Hardware and Software Data Protection
• 64-byte Page Write Mode (Partial Page Writes Allowed)
• Self-timed Write Cycle (5 ms Max)
• High Reliability
  – Data Retention: 40 Years
• Lead-free/Halogen-free Devices Available
• 8-lead JEDEC SOIC and 8-lead TSSOP

AT24C256 订货型号

Ordering Code	Package	Operation Range
AT24C128-10TQ-2.7 AT24C128N-10SQ-2.7	8A2 8S1	Lead-free/Halogen-free/ Automotive Temperature (–40°C to 125°C)
AT24C256N-10SQ-2.7	8S1

AT24C256 应用技术支持与电子电路设计开发资源下载

1. ATMEL 爱特梅尔汽车级EEPROM存储器AT24C256 数据手册DataSheet 下载. PDF（完整版）
2. 串行EEPROM 产品选型指南.xls
3. EEPROM存储器选型指南
4. Interfacing AT24CXX Serial EEPROM Application Note . pdf
5. 中文版 ATMEL 汽车应用解决方案 . pdf
6. 英文版 ATMEL 汽车应用解决方案 . pdf
7. 嵌入式系统中EEPROM文件系统的设计与实现 . PDF