WMSIC Electronic Components

MICROCHIP 24AA00T-I/OT 24AA00T

Model24AA00T-I/OT
PackageSOT-23-5
BrandMICROCHIP
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICROCHIP 24AA00T-I / OT
Type
MICROCHIP
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
24AA00T-I/OT
Electronic Component
1
Package
SOT-23-5
Electronic Component
EEPROM
Electronic Component
0.043g
Electronic Component
1
Electronic Component
BM0227277832
Electronic Component
128bit
Operating Temperature
40℃~+85℃
Operating Voltage
1.8V~5.5V
Interface Type
I2C
Electronic Component
100
Clock Frequency(fc)
100kHz
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

24AA00T-I/OT 产品概述

24AA00T-I/OT 是 Microchip(美国微芯)推出的一款超小型、低功耗的串行 EEPROM 器件,采用 I²C 总线通信,封装为 SOT-23-5,面向需要少量非易失性存储、体积受限且要求工业级可靠性的嵌入式与消费类应用。该器件以简单的接口、高耐久性与宽工作电压范围为特点,适合保存校准参数、设备ID、配置字等小量关键数据。

一、核心参数一览

  • 接口类型:I²C(兼容标准/快速模式)
  • 存储容量:128 bit,组织形式 16 × 8(即 16 字 × 8 位 = 128 位 / 16 字节)
  • 时钟频率:支持标准模式 100 kHz;兼容快速模式 400 kHz(详见具体器件时序规范)
  • 工作电压:1.8 V ~ 5.5 V(宽电压范围,适配多电压系统)
  • 写周期时间(Tw):约 4 ms(单字节写入典型时间)
  • 数据保留(TDR):200 年(典型保证值)
  • 写循环寿命:1,000,000 次(高耐久)
  • 工作温度:-40 ℃ ~ +85 ℃(工业级)
  • 封装:SOT-23-5,型号后缀 -I 表示工业温度等级,-OT 表示卷带包装

二、主要特性与优势

  • 小容量、高可靠:128 bit 足以存储设备唯一标识、配置参数或少量校准数据;器件承诺极长的数据保持时间与极高的擦写次数,适合长期部署的设备。
  • 宽电压工作:1.8–5.5 V 的工作电压使其能在 1.8 V、3.3 V、5 V 等平台上直接工作,减少电平转换设计。
  • 低功耗与快速响应:I²C 总线通信、低功耗待机,典型读写响应快(文档中给出典型访问时间 ~3500 ns),适合对功耗有严格要求的电池供电系统。
  • 小型封装:SOT-23-5 占板面积小,便于在空间受限的 PCB 上使用。
  • 工业级温度与可靠性:-40 ~ +85 ℃ 工作温度和 200 年数据保留、百万次写循环,适合工业、仪器仪表和长期运行产品。

三、典型应用场景

  • 产品序列号、MAC/UID、出厂校准参数存储
  • 设备启动时的配置信息、出厂配置恢复
  • 小型故障记录、运行计数器、版本信息
  • 智能传感器、便携设备、仪表与控制节点中的补充非易失性存储

四、使用建议与注意事项

  • I²C 拉电阻:为保证总线稳定,建议在 SCL/SDA 上使用合适阻值的上拉电阻(常见取值 2.2 kΩ ~ 10 kΩ,依据系统工作电压与总线负载选择)。
  • 写入管理:器件写周期 Tw 约为 4 ms,写入后应等待内部写操作完成(可采用 ACK Polling 查询器件忙闲),避免在写入期间重复发起写命令导致数据错误。
  • 数据完整性:对关键数据建议采用校验机制(如 CRC 或校验和)以检测读回数据的完整性。
  • 电源与热设计:虽然器件支持宽电压范围,但应避免在电源上出现剧烈抖动或上电顺序异常;必要时在 VCC 上添加去耦电容以稳定供电。
  • 总线兼容性:在多器件共享 I²C 总线时,注意地址冲突与总线仲裁,遵循 I²C 总线规范进行总线设计。

五、封装与采购信息

24AA00T-I/OT 提供 SOT-23-5 小封装,适合表面贴装生产;后缀 -I 表示工业温度等级,-OT 通常表示盘装/卷带包装(适合 SMT 批量贴装)。在采购时请注意完整料号以保证温度等级与包装方式符合需求。

六、替代与兼容性建议

若需更大容量或不同性能特性,可以在 Microchip 的 24 系列 EEPROM 中选择更高容量型号或具有页写、写保护等特性的器件。选型时应关注封装、工作电压、I²C 地址与时序兼容性以便快速替换。

結语 24AA00T-I/OT 以其紧凑的体积、宽电压兼容性、出色的可靠性与工业级温度范围,成为保存少量关键非易失性数据的理想选择。设计时注意 I²C 总线与写周期管理,可以充分发挥器件的稳定性与寿命优势。若需更详细的时序图、引脚分配及电气参数,请参考 Microchip 官方数据手册以获得完整规范。

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