WMSIC Electronic Components

PCF8551BTT/AY PCF8551BTT

ModelPCF8551BTT/AY
PackageTSSOP-48
BrandNXP
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 24+

Available for RFQ

Technical data

Product details

15 specifications

Core information

Product name
NXP PCF8551BTT / AY
Type
NXP
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
PCF8551BTT/AY
Electronic Component
1
Package
TSSOP-48
Electronic Component
LCDDriver
Electronic Component
0.339g
Electronic Component
1
Features
Integrated; Built-in Oscillator
Electronic Component
BM0234453029
Electronic Component
Electronic Component
Electronic Component
2000

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

PCF8551BTT/AY 产品概述

一、产品简介

PCF8551BTT/AY 是恩智浦(NXP)推出的一款专用 LCD 驱动器,面向小尺寸字符/点阵液晶显示模块。器件以 TSSOP-48 封装提供,支持 36×4(36 列 × 4 共阴/共阳)显示结构,采用 SPI 串行总线通信,集成升压电路与内部振荡器,便于在资源受限的系统中实现低成本、低引脚占用的显示驱动方案。

二、主要特性

  • 支持 36×4 显示矩阵,适配常见的字符/点阵模块布局。
  • SPI 串行接口,降低主控 MCU 的引脚需求,便于软/硬件集成。
  • 集成升压(charge pump)电路,可生成驱动液晶所需的偏压,减少外部电源和高压资源。
  • 内置振荡器,用于 LCD 的多路复用与刷新定时,减少对外部时钟源的依赖。
  • 多路段驱动输出,具备驱动保护和电平管理功能,适合直接连接 LCD glass。
  • 低功耗工作模式与节能特性,适合电池供电设备。

三、典型应用

  • 手持仪器与便携设备的字符/小点阵显示模块。
  • 家电、工业控制器与仪表盘的状态/信息显示。
  • 医疗设备、消费类电子及远程读表终端等需要低引脚占用显示驱动的场景。

四、设计建议与注意事项

  • 外部滤波/储能电容:虽集成升压电路,但通常仍需少量外部电容以保证升压稳定与降低纹波,具体参数请参阅芯片数据手册。
  • 电源与去耦:为保证显示稳定,应在芯片电源端做好去耦,并在 PCB 布局中将高频与模拟信号区分开。
  • 布线与走线:段/共线应尽量短且成组走线,避免长走线上的干扰串入影响对比度与闪烁。
  • ESD 与保护:LCD 面板与驱动端易受静电冲击,建议在输入引脚与显示输出线加保护措施并遵循封装管脚的 ESD 建议。
  • 驱动极性与时序:内部振荡器虽可工作,但若与外部系统同步或实现闪烁/对比度控制,需在固件中正确配置时序与极性参数。

五、选型与替代方案建议

选择时应关注显示点阵规模、接口类型、功耗与系统电源架构。若系统需更多段数或其它接口(I²C/并行),可在同类 NXP LCD 驱动系列中比较替代器件。最终设计前请务必参考 PCF8551B 的正式数据手册以确认电气参数、引脚定义和推荐外部元件清单。

如需我为您的具体模块或 PCB 设计提供更详细的硬件原理图参考、升压电容选型或 SPI 时序配置建议,可提供电源与面板参数,我将进一步给出可实施的设计方案。

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