WMSIC Electronic Components

XBLW DS1302DTR

ModelDS1302DTR(XBLW)
PackageSOP-8
BrandXBLW
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
XBLW DS1302DTR(XBLW)
Type
XBLW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
DS1302DTR(XBLW)
Electronic Component
1
Package
SOP-8
Electronic Component
Real-Time Clock (RTC)
Electronic Component
0.207g
Electronic Component
1
Features
Power Management and Battery; SRAM / NVRAM
Electronic Component
BM0265609047
Operating Temperature
0℃~+80℃
Operating Voltage
2V~5.5V
Operating Current
1uA
Interface Type
SPI
Crystal Oscillator Type
Electronic Component
Output
Electronic Component

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

DS1302DTR(XBLW芯伯乐)实时时钟芯片产品概述

一、产品核心定位

DS1302DTR是芯伯乐(XBLW)针对低功耗精准计时场景推出的SPI接口实时时钟(RTC)芯片,核心优势在于超小静态功耗、宽电压兼容及实用闹钟功能,可适配纽扣电池供电的长续航需求,适用于消费电子、智能家居、工业控制等多领域。

二、关键性能参数详解

2.1 供电与功耗

  • 宽电压范围:2V~5.5V,覆盖CR2032/CR2025纽扣电池(3V)、3.3V/5V系统供电,无需电平转换;
  • 超小静态电流:100nA(典型值)——以CR2032纽扣电池(容量≈220mAh)为例,理论续航超200年(实际因电池自放电略有缩短,仍远超常规设备需求);
  • 动态功耗:工作电流1uA,数据读写时功耗极低,不影响电池寿命;
  • 低耗散功率:0.01mW,符合低功耗电子设备的能效要求。

2.2 计时与晶振

  • 全功能计时:支持秒、分、时(12/24小时制)、日、周、月、年,内置闰年自动调整,无需手动校准;
  • 外置晶振:需配套32.768kHz石英晶振+12.5pF负载电容,可根据精度需求选择晶振等级(如±20ppm常规晶振适配一般场景,±5ppm高精度晶振用于计量级应用)。

2.3 环境与封装

  • 工作温度:0℃~+80℃,适用于室内环境(智能家居、办公设备)及轻度工业场景(小型PLC);
  • SOP-8封装:尺寸紧凑(5.2mm×4.0mm),兼容常规SMT焊接工艺,便于PCB布局与批量生产。

三、核心功能与接口特性

3.1 SPI通讯接口

采用三线SPI(CLK时钟、DAT数据、CE片选),通讯速率灵活(最高支持1MHz),抗干扰性优于I2C,适合工业环境下的稳定数据传输。

3.2 闹钟输出功能

内置闹钟寄存器,支持单次/重复闹钟(如每日固定时间唤醒),输出引脚为开漏输出,可直接驱动LED、蜂鸣器或触发MCU中断,无需额外放大电路。

3.3 掉电保护

系统供电中断时自动切换至纽扣电池供电,计时数据(秒、分、时等)长期保存,掉电后无数据丢失风险。

四、典型应用场景

  1. 消费电子:电子闹钟、智能手表/手环(低功耗计时)、电子日历;
  2. 智能家居:智能网关(定时数据同步)、智能开关(定时控制)、智能门锁(时间戳记录);
  3. 工业控制:小型PLC(定时任务调度)、数据采集器(时间戳标注)、环境监测仪(定时采样);
  4. 便携式设备:手持终端(低功耗计时)、医疗监测设备(时间戳记录)。

五、选型与使用注意事项

  1. 晶振配套:禁止使用陶瓷晶振(精度低、易受温度影响),必须搭配32.768kHz石英晶振+12.5pF负载电容;
  2. 电池设计:纽扣电池需并联在VCC引脚(SOP-8引脚8),注意正负极连接,避免反接损坏芯片;
  3. PCB布局:晶振走线需短且远离高频信号线,减少电磁干扰对计时精度的影响;
  4. 温度限制:避免在-0℃以下或+80℃以上环境长期使用,否则可能导致计时精度下降。

DS1302DTR凭借其低功耗、高可靠性及实用功能,成为低成本RTC方案的优选,尤其适合对续航有严格要求的电池供电设备。

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