WMSIC Electronic Components

SGMICRO SGM823-SXN5G/TR SGM823

ModelSGM823-SXN5G/TR
PackageSOT-23-5
BrandSGMICRO
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

15 specifications

Core information

Product name
SGMICRO SGM823-SXN5G / TR
Type
SGMICRO
Minimum package
3000 托盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SGMICRO
Electronic Component
SGM823-SXN5G/TR
Electronic Component
1
Package
SOT-23-5
Electronic Component
MCU(MCU / MPU / SOC)
Electronic Component
0.058g
Electronic Component
1
Features
(BOR / LVD / LVR / LVI); positions(POR); Gate positions; positions(NRST); positions; positions(PDR)
Electronic Component
BM0225223477
Electronic Component
Electronic Component
Electronic Component
3000

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

SGM823-SXN5G/TR 产品概述

一、产品简介

SGM823-SXN5G/TR 是圣邦微(SGMICRO)面向单片机/SoC 系统推出的一款复位监控器与看门狗解决方案。器件集成了电源监测、上电复位、掉电复位、看门狗复位、外部与软件复位等功能,采用 SOT-23-5 小封装,适合对可靠性与占板面积有较高要求的嵌入式与便携式应用。型号后缀 “TR” 表示以卷带形式(tape & reel)供应,便于自动化贴装。

二、主要功能特性

  • 欠压检测(BOR / LVD / LVR / LVI):在电源电压低于设定阈值时产生复位或告警,防止 MCU 在不稳定电源下异常工作。
  • 上电复位(POR):在电源上电时保持复位,直到供电稳定,保证系统从确定的起始状态开始运行。
  • 掉电复位(PDR):在断电或电源下降时生成复位,避免数据和外设处于不确定状态。
  • 看门狗复位:通过内部看门狗定时器监测软件运行,一旦程序失锁或超时触发复位,提升系统健壮性。
  • 外部管脚复位(NRST):提供外部手动或外部电路触发的复位输入/输出,方便调试与外部控制。
  • 软件复位:允许通过寄存器或命令触发器件或被监控 MCU 的复位动作,便于远程或程序控制的恢复操作。

三、封装与引脚

  • 封装类型:SOT-23-5,体积小、适合空间受限的板级设计。
  • 供货包装:TR(Tape & Reel),支持高速贴片生产。
  • 引脚通常包含电源、地、NRST、看门狗/使能相关引脚等(具体引脚定义请参阅器件数据手册)。

四、典型应用场景

  • 工业控制与自动化:保证现场控制器在电源波动或软件故障时能安全复位。
  • 物联网与便携设备:小封装、低功耗监控,保护 MCU 在电池电压下降时安全停机或重启。
  • 消费电子与家电:提升系统可靠性与用户体验,防止死机和数据损坏。
  • 通信与网关设备:结合看门狗与外部复位实现远程故障恢复。

五、设计要点与注意事项

  • 选型时应确保复位阈值与目标 MCU 的工作电压范围匹配,避免误触发或失效。
  • NRST 管脚通常需要配置适当上拉/下拉电阻与去耦,以满足系统噪声与抗扰要求。
  • 看门狗超时与喂狗策略需与应用软件配合,避免误复位同时确保能捕捉死锁情况。
  • 电源去耦与 PCB 布线对 POR/PDR 行为影响较大,应遵循器件手册的布局与旁路电容建议。
  • 在需要通过软件复位或外部复位进行安全存储写入时,注意时序与电源稳定窗口。

六、优势与选型建议

  • 集成功能丰富:同时覆盖电源监控、上/掉电复位、看门狗与多种复位触发方式,减少外部元件,简化设计。
  • 小封装、便于自动化贴装:SOT-23-5 + TR 包装适合量产。
  • 适合注重系统可靠性的小型嵌入式系统:通过硬件级复位与看门狗提高系统容错能力。
    选型时以目标 MCU 的电源规范、看门狗功能需求、复位阈值及封装工艺为主要参考维度,必要时参考圣邦微的详细数据手册以获取电气参数和时序信息。

七、结语

SGM823-SXN5G/TR 为需要高可靠性电源与软件监控的单片机/SoC 系统提供了紧凑且功能全面的复位与看门狗解决方案。通过合理配置与良好电源设计,可显著提升系统在电源异常和软件故障情况下的稳定性与可维护性。若需进一步的电气参数、引脚定义与时序图,请参照 SGMICRO 官方数据手册或联系供应商技术支持。

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