WMSIC Electronic Components

MICROCHIP 93LC66BT-I/OT 93LC66BT

Model93LC66BT-I/OT
PackageSOT-23-6
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICROCHIP 93LC66BT-I / OT
Type
MICROCHIP
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
93LC66BT-I/OT
Electronic Component
1
Package
SOT-23-6
Electronic Component
EEPROM
Electronic Component
0.43g
Electronic Component
1
Electronic Component
BM0264780064
Electronic Component
4Kbit
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~5.5V
Interface Type
SPI
Electronic Component
100
Clock Frequency(fc)
2MHz
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.

93LC66BT-I/OT 产品概述

一、产品简介

93LC66BT-I/OT 是 MICROCHIP(美国微芯)出品的一款串行 EEPROM 存储器,容量为 4Kbit(组织为 256 x 16)。器件采用标准 SPI 兼容时序,最高时钟频率为 2MHz,封装为紧凑的 SOT-23-6,适合空间受限的嵌入式系统和便携设备。该器件集成了掉电/上电保护电路与软件写保护功能,适用于需要可靠非易失性参数保存的各种应用场景。

二、主要规格与特性

  • 存储容量:4Kbit(256 x 16)
  • 接口类型:SPI(串行外设接口,兼容标准 SPI 时序)
  • 时钟频率 (fc):最高 2MHz
  • 写周期时间 (Tw):典型 6ms(每字写入周期)
  • 数据保持 (TDR):200 年(典型)
  • 写入寿命:100 万次擦写周期
  • 功能特性:掉电/上电保护电路、软件写保护功能
  • 工作电压:2.5V ~ 5.5V,支持单电源宽范围供电
  • 工作温度范围:-40℃ ~ +85℃
  • 封装:SOT-23-6,适合自动贴装与节省 PCB 空间

三、优势与应用场景

93LC66BT-I/OT 结合高耐久和长数据保持时间,适合存储需长期保存且频繁更新的小容量数据,例如:

  • 设备序列号、产品配置参数与校准常数
  • 系统启动配置与安全密钥(配合软件写保护)
  • 日志与累计计数器(计数写入频繁但容量不大)
  • 工业、医疗与仪表类需要长期可靠保存的设定值

器件工作电压范围宽、支持低压系统;SOT-23-6 封装利于空间受限的终端设备集成。

四、设计与使用建议

  • 电源去耦:器件靠近 VCC 引脚放置 0.1µF 陶瓷电容,改善上电/掉电瞬态响应。
  • 写入管理:写操作持续 Tw(约 6ms),在写入期间应避免断电;建议在主控程序中加入写忙检测或写完成延迟,防止重复写入。
  • 软件写保护:合理配置写保护功能,关键数据写入前需解除保护,写入完成后及时恢复以防误写。
  • SPI 时序:按规范使用 SCLK、CS、MOSI、MISO 等信号,时钟频率不超过 2MHz,确保信号完整性。
  • PCB 布局:SOT-23-6 引脚与地、供电良好回流,信号线走短并避免与高频干扰源并行。

五、替代与采购建议

在同类容量和封装中,用户可根据系统电压、时序要求与可用引脚选择合适型号;采购时请确认型号完整(93LC66BT-I/OT),注意工业温度级(I)与包装形式(/OT)。如需更大容量或更高读写速率,可考虑 Microchip 其他系列或同类厂商产品。

以上为 93LC66BT-I/OT 的简要概述,涵盖主要参数、典型应用与工程使用要点,可作为选型与电路设计参考。如需器件引脚分配图、详细时序图或参考电路图,可进一步提供具体资料。

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