WMSIC Electronic Components

MICROCHIP 24LC64T-I/OT 24LC64T

Model24LC64T-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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICROCHIP 24LC64T-I / OT
Type
MICROCHIP
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
24LC64T-I/OT
Electronic Component
1
Package
SOT-23-5
Electronic Component
EEPROM
Electronic Component
0.022g
Electronic Component
1
Electronic Component
BM0230072164
Electronic Component
64Kbit
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~5.5V
Interface Type
I2C
Electronic Component
100
Clock Frequency(fc)
400kHz
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.

24LC64T-I/OT 产品概述

24LC64T-I/OT 是 Microchip(美国微芯)推出的一款工业级 I²C EEPROM,容量 64Kbit(8K x 8),以其宽电压范围、长寿命和高数据保持性适用于各类需要非易失性参数保存的电子产品。器件封装为 SOT-23-5,便于空间受限的 PCB 布局与自动化贴片工艺。

一、主要规格

  • 器件型号:24LC64T-I/OT
  • 存储容量:64Kbit(8K x 8)
  • 接口类型:I²C(兼容标准 2 线总线)
  • 时钟频率(fc):最高 400 kHz(快速模式)
  • 工作电压:2.5 V ~ 5.5 V(单电源供电,兼容 3.3V 与 5V 系统)
  • 写周期时间(Tw):典型 5 ms(每页写入完成所需时间)
  • 写周期寿命:1,000,000 次(典型)
  • 数据保留(TDR):200 年(典型)
  • 工作温度:-40 ℃ ~ +85 ℃(工业级)
  • 封装:SOT-23-5(小体积、SMD 封装)
  • 备注:描述中提及 “900 ns”,建议在设计时参考具体数据手册以确认该参数在读/写或其他时序中的确切含义。

二、主要特性与优势

  • 宽电压兼容:2.5 V ~ 5.5 V 电压范围,方便与不同主控芯片(MCU)直接配合,减少电平转换电路。
  • 高可靠性:百万次写入寿命与 200 年数据保留适合长期产品追溯、校准常数、出厂参数与序列号等关键信息的存储。
  • 快速总线通信:支持 I²C 快速模式(最高 400 kHz),在系统初始化或配置加载时能快速完成数据交换。
  • 小尺寸封装:SOT-23-5 有利于紧凑型产品(如便携设备、传感器节点、智能模块)布局。
  • 工业温度等级:-40 ℃ ~ +85 ℃ 适合工业、汽车电子外围或室外设备使用(需注意整体系统热设计)。

三、典型应用场景

  • 设备出厂参数与序列号存储(序列管理、维修追踪)。
  • 校准数据、补偿表与工厂标定参数保存(传感器、测量仪器)。
  • 配置与安全参数存储(网络设备、控制器、消费电子)。
  • 小容量数据记录与日志(断电保持的重要操作记录)。
  • 固件版本或引导器相关参数存储(作为外部非易失性补充)。

四、设计与选型建议

  • 拉低/拉高电阻:I²C 总线需外部上拉电阻,选择合适阻值以兼顾上升时间与功耗(常见 2.2 kΩ~10 kΩ,根据总线总线容量调整)。
  • 电源与去耦:靠近器件放置 0.1 µF 陶瓷去耦电容,降低瞬态干扰对写入稳定性的影响。
  • 写入策略:尽量合并写操作、使用页写(如器件支持)以减少写周期次数,从而延长器件寿命并缩短总写入时间。
  • 写保护与地址管理:确认器件的写保护(WP)和地址引脚用法以防误写与总线地址冲突;多个器件并联时注意唯一地址配置。
  • 电平兼容:若主控工作电压低于 2.5 V,应采用电平转换;器件工作电压上限支持 5.5 V,便于与 5V 逻辑直接配合。

五、封装与可靠性(实用提示)

  • SOT-23-5 芯片适合自动贴片加工,封装小巧但需关注焊盘与热流设计,确保焊接可靠性。
  • 工业级温度范围与高数据保持性使其适合长期部署设备,但在高温或高湿环境下仍应做好系统级防护(如 conformal coating、密封或良好散热)。

六、注意事项与后续确认项

  • 在最终设计前,建议下载并逐页阅读官方数据手册,确认页大小、最大写入字节数、地址格式、读写时序、I/O 引脚功能与典型电流消耗等关键参数。
  • 若系统中写入频繁,应评估是否需要额外的写入均衡或循环使用策略以延长整体可靠性。
  • 如需认证级别、汽车级温度或特殊封装(如 SOIC、TSSOP),请联系供应商或代理获取更详细的产品变种信息。

总结:24LC64T-I/OT 提供了稳定、长期可靠的 64Kbit 非易失性存储,适用于工业级应用中对数据保持性和写入寿命有较高要求的场合。结合适当的总线设计与写入策略,可在多类产品中作为经济且可靠的参数与配置存储解决方案。若需更精确的时序或电气参数,请参阅 Microchip 官方数据手册。

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