WMSIC Electronic Components

RENESAS AT45DB641E-SHN2B-T AT45DB641E

ModelAT45DB641E-SHN2B-T
PackageSOIC-8-208mil
BrandRENESAS
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
RENESAS AT45DB641E-SHN2B-T
Type
RENESAS
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
AT45DB641E-SHN2B-T
Electronic Component
1
Package
SOIC-8-208mil
Electronic Component
NOR FLASH
Electronic Component
0.001g
Electronic Component
1
Features
positions
Electronic Component
BM0257645944
Electronic Component
64Mbit
Operating Voltage
1.7V~3.6V
Current
25uA
Interface Type
SPI
Electronic Component
100000
Clock Frequency(fc)
85MHz

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

AT45DB641E-SHN2B-T 产品概述

一、产品简介

AT45DB641E-SHN2B-T 是一款高性能的串行闪存器件,容量为 64Mbit(8 MByte),采用标准 SPI 接口并支持高达 85 MHz 的时钟频率,适用于对非易失性存储需求较高的嵌入式系统。器件由 RENESAS(瑞萨)提供,封装为常见的 SOIC-8-208mil,便于在各种 PCB 设计中替换与布局。

二、关键规格

  • 存储容量:64Mbit(8 MByte)
  • 接口类型:SPI(兼容标准 SPI 指令与时序)
  • 最高时钟频率:85 MHz,满足高速数据传输需求
  • 工作电压:1.7 V ~ 3.6 V,支持单电源宽电压范围
  • 待机电流:典型 25 µA,适合低功耗系统
  • 擦写寿命:100,000 次(典型),适配频繁写入场景
  • 数据保留(TDR):20 年,长期数据保存可靠
  • 封装:SOIC-8-208mil(便于通用 PCB 与 DIP 转换板使用)

三、功能与特性

器件为页/块可擦写的串行闪存,结合高频 SPI 时钟可实现快速读写与低延迟访问。宽电压工作范围支持 1.8 V 与 3.3 V 等多种系统电源方案,低待机电流便于电池供电与功耗敏感的物联网设备。高耐久性与长时间数据保持能力,保证在工业级与消费级产品中的可靠性。

四、典型应用场景

  • 嵌入式系统固件与配置数据存储
  • 工业控制器或仪表的日志与参数保存
  • 消费电子产品的启动代码与用户数据存储
  • 物联网设备与无线终端的固件升级与备份
  • 汽车电子(非安全关键路径)与工控设备的数据记录

五、设计与使用建议

  • 电源与去耦:在 VCC 引脚附近放置 0.1 µF 陶瓷去耦电容,保证高频性能与稳定性;上电/断电避免超过器件最大应力,参考供应商应用手册建议的电源序列。
  • SPI 接线:按系统时序选择合适的 SPI 模式与 CS 控制,确保在 85 MHz 工作频率下信号完整性;长线或高速布局建议加终端匹配与阻抗控制。
  • 写入管理:为延长擦写寿命,建议在应用层实现磨损均衡(wear leveling)与写入合并策略,避免集中擦写单一块。
  • 温度与可靠性:在极端温度或高应力环境中,验证数据保留与擦写性能,必要时采用冗余与校验(CRC)机制提升可靠性。

六、封装与选购注意

AT45DB641E-SHN2B-T 为 SOIC-8-208mil 封装,适合常规贴片工艺与手工焊接;在选购时请确认供应商零件编码与批次,以保证器件真伪与可追溯性。设计时注意焊盘尺寸与散热路径,保证良好焊点与电气连接。

七、总结

AT45DB641E-SHN2B-T 以其 64Mbit 的容量、85 MHz 的高速 SPI 接口、宽电压工作范围与低待机电流,成为满足中高性能嵌入式存储需求的可靠选择。其高擦写寿命与 20 年的数据保留能力,使其在工业、消费与物联网等多种应用中具备长期可靠性与通用性。购买与设计前建议参考厂商完整规格书与应用指南,以确保在具体系统中达到最佳表现。

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