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PCF2127AT/2Y PCF2127AT
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- NXP PCF2127AT / 2Y
- Type
- NXP
- Minimum package
- 2000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- NXP
- Electronic Component
- PCF2127AT/2Y
- Electronic Component
- 1
- Package
- 20-SO
- Crystal Oscillator
- Built-in
- Electronic Component
- Real-Time Clock (RTC)
- Electronic Component
- 0.68g
- Electronic Component
- 1
- Features
- Power Management and Battery;;; SRAM / NVRAM; and;; Battery;; Programmable Clock Output; Output
- Electronic Component
- BM0257589121
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.8V~4.2V
- Operating Current
- 700nA
- Interface Type
- I2C；SPI
- Output
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PCF2127AT/2Y 产品概述
一、概述
PCF2127AT/2Y 是恩智浦（NXP）面向低功耗实时计时应用的片上实时时钟（RTC）器件。器件集成内置晶振与电源备份管理，支持 I2C/SPI 双接口（2 线串口），并在 1.8V 至 4.2V 宽电压范围内稳定工作，工作温度覆盖 -40℃ 至 +85℃，适合工业级与便携设备应用。
二、主要特性
- 接口：I2C / SPI（双接口支持，便于系统集成）
- 内置晶振：无需外接石英，简化 BOM 与 PCB 布局
- 闹钟输出（Alarm）与可编程时钟输出（CLK OUT）
- 片内存储：512 字节片内 SRAM/NVRAM 用于用户数据与参数保存
- 低功耗：静态电流 Iq ≈ 0.7 μA，工作电流典型 700 nA，适合电池供电系统
- 电源管理：备份电源管理与电池充电、电池低压检测
- 功能丰富：时间戳、倒数计时器、周期性中断输出、告警功能、锁定与防篡改机制、温度补偿
三、电气与可靠性指标
- 工作电压：1.8 V ～ 4.2 V
- 工作温度：-40℃ ～ +85℃
- 封装：20-SOIC（宽度 0.295" / 7.50 mm）
这些指标确保器件在无线节点、智能表计、数据记录仪和工业控制等恶劣环境中长期可靠运行。
四、功能详解与应用价值
- 温度补偿：提高时钟长期稳定性，减少温漂带来的时间误差，适合精度要求较高的系统。
- 备份与充电：内建备份电源管理，支持备用电池充电与低压检测，保证主电源断开时仍能保持计时与关键数据。
- 时间戳与片内存：硬件时间戳配合 512B NVRAM，便于记录事件与保存配置，适合数据采集与安全审计。
- 告警与中断：多路告警、中断输出与可编程时钟输出，可用于唤醒微控制器或触发定时任务，显著降低系统平均功耗。
五、典型应用
- 智能电表、燃气/水表等抄表终端
- 物联网传感节点与远程数据记录器
- 工业控制与通信设备的时间同步与日志记录
- 手持设备、便携式仪表及需长寿命备用电池的系统
六、设计建议
- 虽然器件内置晶振，仍建议遵循厂商布局建议以减少 EMI 干扰；关键信号线远离高频开关节点。
- I2C 总线使用合适的上拉电阻并考虑多主/多设备场景的电平兼容。
- 选择与系统工作电压匹配的备份电池并配置充放电保护逻辑，利用芯片的低压检测功能保障可靠性。
PCF2127AT/2Y 在低功耗、备份管理与多功能性上具备显著优势，是需要高可靠时钟、事件记录与长期电池供电场景的优秀选择。
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