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HGSEMI MAX7219M/TR MAX7219M
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI MAX7219M / TR
- Type
- HGSEMI
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- MAX7219M/TR
- Electronic Component
- 1
- Package
- SOP-24-300mil
- Electronic Component
- LED Segment Display Driver
- Electronic Component
- 8 x8 positions
- Electronic Component
- 0.89g
- Electronic Component
- 1
- Features
- BCD;; PWM; Built-in Display RAM
- Electronic Component
- BM0227688676
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 4V~5.5V
- Interface Type
- SPI
- Driver Current
- 320mA
- Driver Current
- 30mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX7219M/TR（HGSEMI 华冠）产品概述
一、产品简介
MAX7219M/TR 是华冠（HGSEMI）提供的一颗高集成度 LED 显示驱动器，支持 8 段 × 8 位（最多 64 个 LED 或一个 8×8 点阵）的直接驱动，常用于数码管、点阵和状态指示面板。器件集成了恒流源、驱动扫描逻辑和亮度调节，接口兼容 SPI 的三线串行通讯，便于与 MCU 串联级联使用。
二、主要参数
- 显示配置：8 段 × 8 位（64 LED）
- 接口类型：3 线串行（兼容 SPI）
- 工作电压：4.0 V ~ 5.5 V（典型 5 V）
- 时钟频率（fc）：最高 10 MHz
- 位（Digit）驱动电流：最大 320 mA（芯片总输出能力）
- 段（Segment）驱动电流：典型 30 mA（可通过外部电阻与寄存器限幅）
- 工作温度：0 ℃ ~ +70 ℃
- 封装：SOP-24，300 mil
三、功能特点
- 内置恒流调节：无需外部限流电阻即可实现稳定段电流，简化外围设计。
- 亮度可调：提供多级亮度控制，软件可灵活设置显示强度。
- 扫描驱动：内部多路复用技术，支持 1 到 8 位的扫描限制配置以节约功耗。
- 串联扩展：DIN/DOUT 支持级联多个芯片，方便扩展更多位数或点阵。
- 可靠性：工作电压与温度范围适合一般工业与民用场景，封装便于表贴焊接。
四、典型应用
- 7 段数码管显示（计数器、电表、仪表）
- 8×8 LED 点阵字符/图形显示（信息提示牌、滚动字幕）
- 工业控制面板与状态指示灯阵列
- 消费类电子的简单图形显示与状态反馈
五、使用建议
- 电源去耦：V+ 与 GND 之间放置 0.1 μF 陶瓷去耦电容，靠近引脚布局，防止高频噪声和瞬态。
- ISET 与电流配置：通过外接 ISET 电阻与芯片内部寄存器配合，调整段驱动电流，避免 LED 长时间高电流工作。
- 散热考虑：当段/位输出电流较大时，注意 PCB 铜箔面积与散热路径，避免器件过热。
- 通信时序：CLK 最高 10 MHz，使用常见 MCU 的 SPI 或手动位移均可实现，级联时注意芯片间的 LOAD/CS 控制。
- 显示模式：若使用 7 段显示，建议启用解码模式以简化数据驱动；点阵时使用非解码（原始）模式以控制单个像素。
六、封装与采购说明
MAX7219M/TR 提供 SOP-24（300 mil）封装，适合自动贴片与回流焊工艺。型号已被多种 LED 模块采用，便于现成模块选型与替换。订购时请确认工作温度与电流规格满足目标应用，并参照数据手册完成 PCB 引脚布局与热管理设计。
总结：MAX7219M/TR 为单芯片解决 8×8 显示驱动问题提供了稳定、可扩展且使用便捷的方案，适配 5V 系统与常见 MCU，是数码管与点阵显示的成熟选择。若需更详细的电气时序、寄存器定义或参考电路图，可进一步提供芯片数据手册或索取参考设计。
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