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MICROCHIP 24AA256-I/SN 24AA256
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- MICROCHIP 24AA256-I / SN
- Type
- MICROCHIP
- Unit
- Electronic Component
- Minimum package
- 1000 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- MICROCHIP
- Electronic Component
- 24AA256-I/SN
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- EEPROM
- Electronic Component
- 0.169g
- Electronic Component
- 1
- Electronic Component
- BM0228537214
- Electronic Component
- 256Kbit
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.7V~5.5V
- Interface Type
- I2C
- Electronic Component
- 100
- Clock Frequency(fc)
- 400kHz
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
24AA256-I/SN 产品概述
一、产品简介
24AA256-I/SN 是 Microchip（美国微芯）生产的一款串行 I2C EEPROM，存储容量 256 Kbit（32 KB），工作电压宽、耐温范围广，适合在工业级和消费类场景中作非易失性数据存储。器件采用 SOIC-8 封装，接口为标准 I2C，两线通信，最高支持 400 kHz 时钟频率。
二、主要参数
- 接口类型：I2C（两线）
- 存储容量：256 Kbit（32 KB）
- 工作电压：1.7 V ~ 5.5 V
- 时钟频率（fc）：最高 400 kHz
- 单次写周期时间（Tw）：典型 5 ms
- 写周期寿命：1,000,000 次
- 数据保留（TDR）：200 年
- 工作温度：-40 ℃ ~ +85 ℃
- 封装：SOIC-8
- 品牌：MICROCHIP（美国微芯）
三、主要特性与优势
- 宽电压供电（1.7 V~5.5 V），适配 1.8 V、3.3 V、5 V 系统，便于多种系统集成。
- 支持高达 400 kHz 的 I2C 总线速度，满足多数应用对速度的需求。
- 高耐久（百万次写）和超长数据保留（200 年），适合需频繁写入且长期保存数据的场景。
- SOIC-8 封装便于手工焊接与自动贴装，利于量产与样机验证。
四、典型应用
- 配置参数和校准数据存储（仪表、传感器模块）。
- 产品序列号、出厂信息、日志存储。
- 引导加载器/固件小数据存储与备份。
- 工业控制、通信设备、汽车电子（在符合温度等级下）等。
五、设计与使用建议
- 推荐在 I2C 总线上加入合适的上拉电阻：对 3.3 V 系统常用 4.7 kΩ，对低速或 1.8 V 系统可使用 10 kΩ；具体值根据总线电容与速度权衡选择。
- 在器件 VCC 与 GND 之间并联 0.1 μF 陶瓷去耦电容，靠近封装脚焊盘布置。
- 写操作后遵守 Tw 写周期（约 5 ms），可采用 ACK polling（写后轮询器件应答）以优化等待时间。
- 为提高可靠性，建议在执行跨页写入时按页对齐写入（器件典型有页写长度，详见数据手册确认页大小）。
- 使用 WP（写保护）引脚（如器件提供）在需要时锁定整个器件以防误写。
- 注意电源上电/断电顺序，避免在高速信号存在时插拔器件引起总线毛刺。
六、封装与订购
器件型号：24AA256-I/SN；常见封装为 SOIC-8，适用于 PCB 表贴工艺与手工焊接验证。具体包装形式（卷带、托盘等）及最低订购单位请参考 Microchip 正式产品资料或授权分销商信息。
七、其他注意事项
在设计前应下载并核对 Microchip 官方数据手册，确认页写长度、器件地址结构、代码字节格式、电气极限值与时序图等细节，以保证系统兼容性与长期可靠性。若系统对写次数或数据保留有更高要求，可与供应商沟通更适配的器件或进阶方案。
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