WMSIC Electronic Components

HGSEMI HT1621BQ

ModelHT1621BQ
PackageLQFP-48(7x7)
BrandHGSEMI
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI HT1621BQ
Type
HGSEMI
Minimum package
250 托盘

Technical parameters

Electronic Component
1/3,1/2
Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
HT1621BQ
Electronic Component
1
Package
LQFP-48(7x7)
Electronic Component
LCDDriver
Electronic Component
0.293g
Frequency
256kHz
Electronic Component
1/4,1/3,1/2
Electronic Component
1
Features
Built-in Oscillator
Electronic Component
BM0229934262
Operating Temperature
25℃~+75℃
Operating Voltage
2.4V~5.2V
Operating Current
60uA

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

HT1621BQ — HGSEMI (华冠) LCD 驱动控制器 产品概述

一、产品简介

HT1621BQ 是 HGSEMI(华冠)推出的一款用于小型点阵/段式液晶显示的专用驱动与控制电路。器件集成 LCD 驱动、电荷泵/偏压选择逻辑、内部时钟/分频以及 3 线串行控制接口,适合家电、仪表、计量、便携设备等需要低功耗、多段/多 COM 驱动的显示应用。器件采用 LQFP-48(7×7 mm)封装,便于 PCB 安装与散热管理。

二、主要特性

  • 品牌:HGSEMI(华冠),型号:HT1621BQ
  • 显示配置(位):32 × 4 bit(支持 32 列 × 4 COM 类段式/点阵映射)
  • 占空比(COM 数/复用率):1/4、1/3、1/2 可选
  • 偏压(Bias):1/3、1/2 可选,满足不同 LCD 面板偏压需求
  • 工作电压:2.4 V ~ 5.2 V,适应电池供电与 5 V 系统
  • 工作频率:256 kHz(工作时钟/驱动频率参考)
  • 接口类型:3 线串行接口(简洁的 DATA/CLK/CS 控制)
  • 工作温度范围:-25 ℃ ~ +75 ℃
  • 封装:LQFP-48(7×7 mm)

三、电气与环境参数(关键项)

  • 工作电压范围:2.4 V 至 5.2 V,器件在整个范围内保持驱动能力与时序稳定性
  • 工作温度:-25 ℃ 至 +75 ℃,适合一般工业与消费类环境
  • 驱动频率:256 kHz(用于帧驱动或内部振荡参考,实际驱动参数建议参考显示玻璃要求)
  • 支持多种占空比与偏压组合,以兼容不同液晶模组的对比度与功耗要求

四、接口与控制

  • 控制接口:3 线串行接口(典型为 CS / WR(CLK) / DATA 或相同功能命名),便于 MCU 以最小 I/O 实现显示更新
  • 通讯方式:通过命令/数据分帧写入显示 RAM,控制显示开关、偏压选择与占空比模式
  • 时序要点:使用片选(CS)进行帧同步,时钟边沿驱动数据采样,建议在系统设计中参照器件时序与 MCU SPI 模式做匹配

五、驱动配置与工程选型建议

  • 偏压/占空比选择:根据所选 LCD 面板的工作电压、对比度和功耗来决定。通常:
    • 低功耗场景可选较高占空比(如 1/4)和较高偏压配合;
    • 对比度要求高时依据面板推荐在 1/3 或 1/2 之间调整;
    • 在设计初期建议与 LCD 厂商确认最佳 Bias 与 Duty 组合。
  • 工作频率:256 kHz 为参考驱动频率,若系统存在 EMI 或干扰问题,可通过 PCB 布局与去耦优化降低干扰。
  • 显示内存映射:32×4 bit 映射到显示 RAM,对应段/共极的驱动矩阵;在驱动刷新时分配好段地址与位序,避免闪烁与残影。
  • 电源去耦:建议在 VCC/GND 近端放置 0.1 μF 陶瓷去耦电容,并在敏感模拟偏压点添加适当滤波元件。

六、封装与机械事项

  • 封装形式:LQFP-48,7×7 mm;适合常见的 SMT 贴片工艺
  • 板级注意:为保证驱动稳定与散热,LQFP-48 引脚周围保持良好铜箔与接地平面;关键信号线(CLK/DATA/CS)尽量缩短并避免与高频开关电源走线平行
  • 焊接与生产:遵循标准回流焊温度曲线,注意湿敏等级与储存要求

七、典型应用场景

  • 家电面板:微波炉、洗衣机、空调等带段式 LCD 的面板
  • 工业仪表:便携式测量仪、控制器显示单元
  • 医疗/消费电子:手持设备、消费性遥控器与电子秤
  • 其他需要低功耗、透明显示与多段控制的场合

八、设计注意事项与验证建议

  • 兼容性验证:在最终产品中应对偏压/占空比组合进行对比度、功耗与可视性的验证,必要时与 LCD 厂商确认驱动参数
  • EMI 与时钟干扰:256 kHz 时钟虽属低频,但在布局上仍应隔离敏感模拟电路,合理布置去耦与滤波
  • 软件驱动:实现可靠的 3 线串行协议与错误检测(如写入确认或时序容差),在上电/下电时按推荐流程初始化偏压与占空比
  • 温度与老化测试:在 -25 ℃ ~ +75 ℃ 全温度循环下测试显示一致性与寿命,关注低温对液晶响应时间的影响

总结:HT1621BQ 为一款面向段式/点阵 LCD 的功能集成型驱动器,支持多种偏压与占空比,具有低功耗宽电压和简洁的 3 线控制接口,适合多类商用与工业显示方案。在实际工程中需结合 LCD 面板参数与 PCB 布局进行定制化调试,以获得最佳对比度与可靠性。

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