WMSIC Electronic Components

RENESAS AT45DB021E-SHN-T AT45DB021E

ModelAT45DB021E-SHN-T
PackageSOIC-8
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 22+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RENESAS AT45DB021E-SHN-T
Type
RENESAS
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
AT45DB021E-SHN-T
Electronic Component
1
Package
SOIC-8
Electronic Component
NOR FLASH
Electronic Component
0.43g
Electronic Component
1
Features
positions
Electronic Component
BM0257222497
Electronic Component
2Mbit
Operating Temperature
40℃~+85℃
Operating Voltage
1.65V~3.6V
Current
25uA
Interface Type
SPI
Electronic Component
100000

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

AT45DB021E-SHN-T 产品概述

一、主要参数

AT45DB021E-SHN-T 是一款 2Mbit 串行 SPI Flash 存储器(约 256KB),工作电压范围 1.65V 至 3.6V,最大时钟频率 85MHz,封装为 SOIC-8。待机电流典型值 25μA,页写入时间(Tpp)约 3ms,擦写寿命可达 100,000 次,数据保留(TDR)约 20 年,工作温度范围 -40℃ 至 +85℃。

二、产品特点

  • 宽电源范围:1.65V~3.6V 支持低功耗移动和标准 3.3V 系统,便于与不同电压等级 MCU 配合。
  • 高速 SPI 接口:最高可达 85MHz 的 SPI 时钟,满足快速代码或数据读出要求。
  • 优良的耐久性与保持性:100k 次擦写循环与 20 年的数据保持能力,适用于需要长期可靠保存的数据。
  • 低功耗:待机模式下电流低至 25μA,有利于电池供电和节能设计。
  • 紧凑封装:SOIC-8 便于传统 PCB 布局与自动化贴装。

三、典型应用

适用于嵌入式系统固件存储、启动代码(bootloader)、配置参数保存、日志与校准数据记录、物联网终端、消费电子、工业控制等需要小容量、可靠持久存储的场景。

四、设计与使用建议

  • 电源与去耦:在 VCC 近端放置 0.1μF 陶瓷去耦电容,避免开关噪声影响读写可靠性。
  • 电平匹配:若主控电压超过 3.6V,请使用合适的电平转换器以保护器件。
  • SPI 时序与 CS 管理:在高频工作时注意信号完整性(SCK 上升/下降沿、时钟阻抗匹配),确保 CS 在事务期间稳定有效。
  • 写入/擦除策略:合理组织写入与擦除,尽量采用页写入(Tpp≈3ms)和块擦除以减少擦写次数,延长寿命。
  • 保护与可靠性:在设计中考虑写保护与防误写机制;系统上电/断电时避免在写入或擦除过程中断电。

五、可靠性与合规

该器件支持工业级温度(-40℃~+85℃),并具备长期数据保持能力。为保证最终系统可靠性,建议在产品开发阶段做实际应用下的写均衡、循环寿命与高低温测试,并依据制造商数据手册执行焊接、存储与静电防护要求。

六、封装与采购注意事项

AT45DB021E-SHN-T 常见封装为 SOIC-8,适合常规 PCB 布局与插装工艺。采购时请确认零件完整编号与封装、温度等级、引脚配置以及是否满足无铅和抗潮要求,必要时向 RENESAS 获取最新数据手册以核对命令集与时序。

总结:AT45DB021E-SHN-T 以其宽电压范围、低功耗、高速 SPI 接口以及良好的耐久性和数据保持特性,适合多类嵌入式与工业应用中作为可靠的小容量代码/数据存储解决方案。在设计中遵循时序、电源与写入管理建议,可充分发挥其性能与可靠性。若需详细引脚、命令与时序,请参考厂商完整数据手册。

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