WMSIC Electronic Components

HOLTEK HT67F489

ModelHT67F489
PackageLQFP-44_10x10x08P
BrandHOLTEK
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
HOLTEK(Holtek / Holtek) HT67F489
Type
HOLTEK
Minimum package
160

Technical parameters

Electronic Component
HOLTEK(Holtek / Holtek)
Electronic Component
HT67F489
Electronic Component
1
Package
LQFP-44_10x10x08P
Electronic Component
MCU(MCU / MPU / SOC)
Electronic Component
1.414g
CPU
Other
I / O
42
Electronic Component
1
ADC
12bit
Features
(BOR / LVD / LVR / LVI); positions(POR); Gate positions; Built-in General Purpose; positions
Electronic Component
BM0264353930
Operating Voltage
2.2V~5.5V
Electronic Component
160
Electronic Component
8KB
Memory Type
FLASH

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

HT67F489 产品概述

一、简要概述

HT67F489 是 HOLTEK(台湾合泰)推出的一款小容量 Flash 单片机,基于 RISC 架构,封装为 LQFP-44(10×10)。器件面向对成本、功耗和体积有较高要求的嵌入式控制应用,提供丰富的 GPIO 与 12-bit ADC,工作电压范围宽(2.2V~5.5V),并集成多种复位与保护机制,便于在电池供电与工业环境中稳定运行。

主要规格一览

  • CPU 内核:RISC(Holtek 自有架构)
  • 程序存储:8 KB Flash
  • 数据存储:约 256 Byte RAM
  • I/O 引脚数:42 个
  • ADC:12-bit
  • 工作电压:2.2 V ~ 5.5 V
  • 主要功能:欠压检测(BOR/LVD/LVR/LVI)、上电复位(POR)、看门狗复位、内置通用定时器、软件复位
  • 封装:LQFP-44(10×10×0.8?,请以器件引脚图为准)

二、核心资源与外设能力

HT67F489 在有限的存储资源下提供实用的外设组合:

  • 8KB Flash 适合实现控制逻辑、状态机与轻量通信协议(如简单串口、自定义协议)。
  • 256Byte 数据 RAM 要求代码在变量使用与堆栈管理上谨慎,适合以静态分配为主、避免大量动态数据结构。
  • 42 路 I/O 能满足键盘、指示灯、继电器驱动、PWM 输出与传感器接口等混合应用。
  • 12-bit ADC 满足大多数模拟量测量场景(电池电压、温度、光照、模拟传感器),在精度与成本之间取得平衡。
  • 内置通用定时器可用于 PWM、事件计时、周期任务与低速闭环控制。

三、可靠性与电源管理特性

器件集成多种复位与保护功能,有利于系统可靠性设计:

  • 上电复位(POR):保证电源上升期间系统在确定状态下启动。
  • 欠压检测 BOR/LVD/LVR/LVI:可设置触发阈值,防止电源不足导致的异常行为,适合电池供电设备。
  • 看门狗复位(WDT):增强运行稳定性,避免软件死锁导致系统不可用。
  • 软件复位:便于在运行中执行受控重启或状态复位。

这些功能可以在固件中配合使用,构建容错与自恢复机制,提高产品在现场的可维护性。

四、典型应用场景

HT67F489 适用于资源受限但对 I/O 与模拟测量有一定需求的产品,例如:

  • 小型家电控制面板、电子温控器
  • 电池供电的手持设备、遥控器、仪表
  • 工业或民用传感器节点(需本地采样与滤波)
  • 简单电机控制、继电器或开关驱动
  • 教育或入门级嵌入式产品与量产低成本单元

五、设计与工程注意事项

  • 存储资源限制:8KB Flash 与 256B RAM 要求精简固件,避免动态分配与大缓冲区,可通过状态机、事件驱动、表驱动减少 RAM 使用。
  • 电源与复位:使用合适的去耦电容与上电滤波,合理配置 BOR/LVD 阈值,测试在边界电压下的行为。
  • ADC 设计:提供稳定的参考电压与采样通道隔离,加入采样滤波与校准,必要时使用多次采样平均以改善精度。
  • PCB 布局:LQFP-44 封装要求良好的焊盘与地平面设计,敏感模拟信号与高速数字信号分区布线,保证 ADC 精度与 EMC 性能。
  • 调试与烧录:参考 Holtek 官方工具链与编程器(开发环境、ISP/ICSP 接口),在软件中开启看门狗与复位保护以覆盖真实运行场景。

六、开发与量产建议

  • 开发阶段采用逐步裁剪法:先实现核心功能,再逐步增加特性并实时评估 Flash/RAM 使用。
  • 启用编译器优化,减少库函数与浮点运算,必要时用汇编编写关键性能或空间受限模块。
  • 在系统上电、断电与复位条件下做充分可靠性测试(BOR 阈值、看门狗触发、软件复位流程)。
  • 与供应链确认 LQFP-44 封装的焊接工艺规范与器件生命周期,保证量产交付稳定。

HT67F489 以其宽电源范围、较多 GPIO 与 12-bit ADC 为中低端嵌入式控制提供了经济且可靠的解决方案。对于预算敏感且功能明确的产品,合理规划资源与周全的电源、复位设计可以发挥该器件的最佳性能。若需更详细的时钟、引脚功能与电气参数,请参考 Holtek 官方数据手册。

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