WMSIC Electronic Components

RENESAS R7FA2L1A92DFL#AA0 R7FA2L1A92DFL

ModelR7FA2L1A92DFL#AA0
Package48-LQFP
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 Option 160216

Availability on request

Technical data

Product details

20 specifications

Core information

Product name
RENESAS R7FA2L1A92DFL#AA0
Type
RENESAS
Unit
Electronic Component
Minimum package
250 托盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
R7FA2L1A92DFL#AA0
Electronic Component
1
Package
48-LQFP
Electronic Component
MCU(MCU / MPU / SOC)
Electronic Component
1.1g
CPU
32 Bit
CPU
ARM Cortex-M23
I / O
37
RAM
32KB
Electronic Component
1
ADC
12bit
DAC
12bit
EEPROM
8KB

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

R7FA2L1A92DFL#AA0 产品概述

一、产品简介

R7FA2L1A92DFL#AA0 为瑞萨(RENESAS)推出的一款高集成度 32 位微控制器,基于 ARM Cortex-M23 内核,最高主频 48 MHz。该器件面向对功耗、可靠性和模拟接口有一定要求的嵌入式应用,提供 128 KB Flash 程序存储、32 KB SRAM 与 8 KB EEPROM,用于程序、运行数据与小容量非易失性数据存储。器件采用 48 引脚 LQFP 封装,工作电压范围宽(1.6 V~5.5 V),工作温度为 -40 ℃~+85 ℃,并配备 37 路通用 I/O 以及 12 位 ADC 与 12 位 DAC,适合工业控制、传感器采集、仪表与物联网终端等场景。

二、核心性能要点

  • 处理器:ARM Cortex-M23,32 位,最高主频 48 MHz,适合大多数低功耗实时控制与嵌入式计算任务。
  • 存储:128 KB Flash(程序存储)、32 KB SRAM(运算与堆栈)、8 KB EEPROM(小容量可靠数据保存,如校准参数与配置)。
  • 模拟资源:12 位 ADC 与 12 位 DAC,满足中高精度数据采集与模拟输出要求。
  • I/O 与封装:37 路可用通用 I/O,48 引脚 LQFP 封装,便于开发板与量产 PCB 布局。
  • 振荡器:采用外置振荡器体系(外部晶振或外部时钟输入),便于实现精确时钟与低抖动需求。
  • 电源与温度:工作电压 1.6 V~5.5 V,支持单节锂电池供电与 5 V 系统;工业级工作温度 -40 ℃~+85 ℃,适合恶劣环境下运行。

三、外设与应用特性(面向工程实现)

  • 模拟输入/输出能力:12 位 ADC 可用于多通道传感器采集,配合 12 位 DAC 可直接驱动模拟控制环路或输出参考电压。建议在传感器采集应用中注意输入缓冲与滤波,保证精度。
  • 非易失存储策略:器件内置 8 KB EEPROM,适合保存设备标识、校准数据与配置参数。设计时应实现简单的写入限次监测与必要的冗余策略,以延长 EEPROM 寿命。
  • 引脚与外设集成度:37 路 I/O 支持多路数字接口与外设连接,在外设数量受限的场合可节省外部桥接芯片,降低系统成本与体积。
  • 时钟与计时:使用外置振荡器可获得更稳定的系统时钟,适用于通信时序要求高或对时间基准精度敏感的应用。布局时请将晶振走线最短并紧靠地平面以降低噪声。

四、典型应用场景

  • 工业自动化与过程控制:适合用于数据采集、信号处理与简单控制逻辑,工业温度等级与宽电压支持利于现场应用。
  • 仪表与医疗监测(非关键生命支持类):高精度 ADC 与 DAC 可用于传感器读数采集与模拟输出。
  • 物联网节点与传感器终端:低频主控、宽电压范围与 EEPROM 提供本地配置保存,适合电池供电或混合供电的终端设备。
  • 家用电器与消费类电子:丰富的 I/O 与嵌入式存储可实现用户交互、状态保存与外部外设控制。

五、设计注意事项与建议

  • 电源与去耦:在 VDD/VSS 引脚处放置适当的去耦电容(典型 0.1 µF 与 1 µF 的组合),并在电源入口处加入滤波与浪涌保护,特别是在 5 V 供电或电磁干扰较强的环境中。
  • 时钟布局:若使用晶体,建议将晶体与负载电容靠近 MCU 的振荡器引脚并保持地平面完整;若采用外部时钟输入,保证信号完整性并加入必要的缓冲。
  • ADC 与模拟布局:为获得最佳 ADC 性能,应为模拟地和数字地提供单点接地,模拟输入采用滤波与前置运算放大器(视外部传感器输出级而定),避免数字开关噪声耦合。
  • EEPROM 使用策略:对频繁写入的参数采用 wear-leveling 或写入计数管理,避免热点擦写造成寿命问题。

六、开发与生态

R7FA2L1A92DFL#AA0 可融入瑞萨提供的开发生态与工具链,配合评估板和调试器可实现快速样机验证与固件开发。对于量产项目,建议使用厂商提供的参考手册与器件数据手册进行引脚配置、时序与电气特性设计验证,以确保符合系统可靠性与 EMC 要求。

七、小结

R7FA2L1A92DFL#AA0 是一款面向低功耗、高可靠性嵌入式应用的 32 位 MCU,凭借 ARM Cortex-M23 内核、适度的主频、丰富的模拟与数字资源以及宽工作电压和工业温度范围,为工业控制、传感数据采集、物联网节点等场景提供了平衡的性能与成本解决方案。在具体工程实现中,合理的电源设计、振荡器布局与 EEPROM 使用策略将有助于发挥器件的最佳性能并提升系统稳定性。

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