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PCA2129T/Q900/2,51 PCA2129T
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
15
specifications
Core information
- Product name
- NXP PCA2129T / Q900 / 2, 51
- Type
- NXP
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCA2129T/Q900/2,51
- Electronic Component
- 1
- Package
- 16-SO
- Electronic Component
- Real-Time Clock (RTC)
- Electronic Component
- 0.001g
- Electronic Component
- 1
- Features
- Battery;; and; Power Management and Battery;; Output; Programmable Clock Output; Gate
- Electronic Component
- BM0263483781
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCA2129T/Q900/2,51 实时时钟（RTC）产品概述
PCA2129T/Q900/2,51是恩智浦（NXP）推出的一款高精度低功耗实时时钟芯片，专为需要稳定计时、长续航的应用场景设计，集成温度补偿、闰年校正、多接口及系统监视等功能，覆盖工业、消费电子、物联网等领域的设备开发需求。
一、核心性能亮点
1. 高精度稳定计时
内置温度补偿晶体振荡器（TCXO），可抵消温度变化对晶体振荡频率的影响，配合闰年自动校正功能，实现长期计时精准（典型年偏差远低于常规RTC）；支持方波输出，可用于系统时钟同步，提升设备时间一致性。
2. 超低功耗设计
计时状态下最大电流仅1.5µA（@3.3V供电），即使依赖纽扣电池/锂电池供电，也能实现数年续航；供电电压范围覆盖1.8V~4.2V，兼容多种电源（如锂电池、干电池），无需额外电压转换电路。
二、功能与接口特性
1. 完整时间日期管理
- 时间格式：支持12/24小时切换的HH:MM:SS，适配全球不同地区习惯；
- 日期格式：YY-MM-DD-dd（年-月-日-星期），自动识别闰年；
- 警报功能：内置定时警报器，可设置闹钟、设备定时唤醒等场景。
2. 灵活通信接口
采用I²C/2线串口通信，协议简单易实现，可直接对接主流MCU（如STM32、NXP自家MCU），实现时间读写、参数配置，开发门槛低。
3. 系统监视功能
集成监视计时器，可检测系统运行状态：当系统故障（如程序跑飞）时，计时器超时可触发复位/警报，提升设备可靠性。
三、环境与封装适配
1. 宽温宽压适应
- 工作温度：-40°C~85°C，应对工业低温、高温及户外温差变化；
- 供电电压：1.8V~4.2V，兼容电池供电设备，简化硬件设计。
2. 紧凑表面贴装封装
采用**16-SOIC（0.295英寸/7.50mm宽）**表面贴装，体积小巧节省PCB空间，适合高密度集成（如智能手表、小型传感器），兼容常规SMT生产工艺。
四、典型应用场景
- 物联网终端：智能传感器、智能家居节点（温湿度/门锁），低功耗+稳定计时实现长期无人值守；
- 工业控制：PLC、远程监控终端，宽温+高精度满足工业现场可靠性；
- 消费电子：智能手表、电子相框，超低功耗延长续航，警报功能用于定时提醒；
- 车载电子：行车记录仪、车载信息系统，宽温适应车内温差，准确记录数据时间戳。
五、总结
PCA2129T/Q900/2,51以高精度、低功耗、宽适配为核心优势，集成实用的时间管理、通信及系统监视功能，覆盖从消费电子到工业控制的多场景需求。恩智浦的品牌保障进一步提升了其稳定性，是设备开发中选择实时时钟的优质方案。
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