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MICROCHIP 25AA02E48T-I/SN 25AA02E48T
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MICROCHIP 25AA02E48T-I / SN
- Type
- MICROCHIP
- Minimum package
- 3300 个
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MICROCHIP
- Electronic Component
- 25AA02E48T-I/SN
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- EEPROM
- Electronic Component
- 0.32g
- Electronic Component
- 1
- Features
- Built-in Latch(WEL)
- Electronic Component
- BM0258755989
- Electronic Component
- 2Kbit
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.8V~5.5V
- Interface Type
- SPI
- Electronic Component
- 100
- Clock Frequency(fc)
- 10MHz
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
25AA02E48T-I/SN 产品概述
一、产品简介
25AA02E48T-I/SN 是 MICROCHIP（美国微芯）生产的一款低功耗 SPI 串行 EEPROM，存储容量 2Kbit（256 字节），工作温度范围 -40℃ 至 +85℃，供电电压范围宽泛，为 1.8V 至 5.5V，时钟频率最高支持 10MHz，采用 SOIC-8 封装，适用于需要可靠非易失性参数、配置或序列号存储的各类电子设备。
二、主要规格要点
- 接口类型：SPI 串行接口（兼容主流 SPI 主控）
- 存储容量：2Kbit（256 字节）
- 供电电压：1.8V ~ 5.5V（宽电压范围利于多电压系统）
- 时钟频率：最高 10MHz
- 写周期时间（Tw）：典型 5ms（单页/单次写入完成所需时间）
- 数据保持（TDR）：200 年（典型）
- 写入寿命：100 万次擦写周期（Endurance）
- 工作温度：-40℃ ~ +85℃
- 封装：SOIC-8，便于工业级 PCB 组装
三、电气与时序关注
- 在进行写操作后，必须等待写周期完成（建议按 Tw = 5ms 保守等待），或在主控实现写完成检测机制后再进行后续访问，以避免数据损坏。
- 时钟速率上限为 10MHz，在高频时请留意 PCB 布线与信号完整性。
- 供电与 I/O 逻辑电平需一致或采用合适的电平转换，以免损坏器件或产生通信错误。
四、PCB 设计与可靠性建议
- 在 VCC 与 GND 之间并联 0.1μF 去耦电容，靠近器件电源引脚放置，稳定供电并抑制瞬态噪声。
- SOIC-8 封装要求注意焊盘尺寸与热沉设计，保证可靠焊接并方便返修。
- 对关键信号（SCK、MOSI、MISO、CS）走线尽量短且配合地线回流，必要时加串联阻抗降低反射。
- 对关键配置或序列号等写入频率高的场合，考虑写入策略以延长器件寿命（如写入合并、写均衡）。
五、典型应用场景
- 工业与消费类产品的校准数据、设备配置、序列号和标识信息存储。
- IoT 终端、通信模块的参数及证书存放。
- 仪表与计量设备中对长期数据保存（低功耗、长数据保持）有要求的场合。
六、使用注意事项
- 该器件适用于工业级温度，但如需汽车级或更严苛环境，请评估是否满足对应认证与可靠性要求。
- 写入操作尽量集中与批量管理，避免频繁逐字节写入以减少擦写次数累计。
- 系统上电与断电过程应确保在写入完成后再切断电源，以防止写入中断导致数据不完整。
七、总结
25AA02E48T-I/SN 凭借宽电源范围、SPI 高速通信能力、长数据保持和高写入寿命，适合用作设备配置、校准和身份信息的非易失性存储器。合理的 PCB 布局、写入策略与电源管理可最大化其可靠性和寿命，适合工业、消费与物联网等多种应用场景。若需具体时序图、引脚说明或参考电路，请参考 MICROCHIP 的完整数据手册。
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