WMSIC Electronic Components

ADI/LINEAR DS1305EN+T&R DS1305EN

ModelDS1305EN+T&R
PackageTSSOP-20
BrandADI/LINEAR
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

16 specifications

Core information

Product name
ADI(Analog Devices) / LINEAR DS1305EN+T&R
Type
ADI/LINEAR
Minimum package
2500

Technical parameters

Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
DS1305EN+T&R
Electronic Component
1
Package
TSSOP-20
Electronic Component
Real-Time Clock (RTC)
Electronic Component
0.226g
Electronic Component
1
Features
Power Management and Battery; SRAM / NVRAM
Electronic Component
BM0258859736
Operating Temperature
40℃~+85℃
Operating Voltage
2V~5.5V
Interface Type
SPI
Electronic Component
2500

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

DS1305EN+T&R 产品概述

一、产品简介

DS1305EN+T&R 是 ADI(亚德诺/LINEAR)系列的串行实时时钟芯片,采用 20 引脚 TSSOP 封装并以卷带盘(Tape & Reel)方式供货。该器件通过 SPI 接口与主控器通信,集成完整的时钟/日历和报警功能,并提供 96 字节的电池备份 SRAM,可用于保存用户数据或系统设置。工作电压范围宽(2.0V 至 5.5V),工作温度范围为 -40℃ ~ +85℃,适用于工业级及消费类长期运行的时间管理需求。

二、主要特性

  • 串行 SPI 接口(兼容标准四线 SPI:/CS、SCLK、SI、SO),便于与 MCU、FPGA 等主控器对接;
  • 完整的时钟/日历功能,支持秒、分、时、日、月、年及闰年处理;
  • 可编程报警/中断输出,用于定时唤醒或事件触发;
  • 96 字节电池备份 SRAM,断电情况下可保存关键数据;
  • 外部 32.768 kHz 晶体作为时间基准(建议使用精度高、温度稳定的晶振);
  • 电源自动切换与电池备份支持,确保主供电失效时时钟持续运行;
  • 宽电压工作(2.0V–5.5V),单片机系统易于集成;
  • 工业级工作温度(-40℃ 至 +85℃)。

三、电气与环境参数(关键参数摘要)

  • 工作电压:2.0 V ~ 5.5 V;
  • 工作温度:-40 ℃ ~ +85 ℃;
  • 接口类型:SPI(四线串行);
  • 备份存储:96 字节 SRAM(电池/时钟备份);
  • 封装:TSSOP-20;
  • 供货形式:卷带/盘(+T&R),适合 SMT 自动贴装与量产。

四、功能亮点

  1. 精准时间基准:基于 32.768 kHz 石英晶体,提供稳定的时钟源,支持常规闰年调整与日历翻转处理。
  2. 低功耗与可靠备份:芯片支持电池供电域,主电源断开时通过备用电源维持时钟与 SRAM 数据,适合需长期断电保存数据的应用。
  3. 可编程报警:灵活的报警/唤醒机制,可配置为每天、每月或指定时刻触发,并可用于系统电源管理或定时采样。
  4. SPI 简洁总线:高速且占用引脚少,便于与各类微控制器(MCU)或 SoC 集成,实现快速读写与设备配置。
  5. 充足的用户 RAM:96 字节电池备份 SRAM 可存放设备配置、日志或断电前状态信息,减少外部 EEPROM 需求。

五、典型应用场景

  • 工业控制设备:需要长期稳定时间戳记录与断电保护的 PLC、数据采集终端;
  • 通信与网络设备:日志记录、事件时间戳与系统维护时间基准;
  • 消费类电子:带 RTC 的家电、智能家居控制器、高清摄像头等需时间同步的终端;
  • 电池供电/便携设备:低功耗唤醒与断电数据保持场景;
  • 仪器仪表:数据记录仪、能源计量仪表等对时间精度和数据完整性要求高的设备。

六、使用建议与注意事项

  • 晶体选择与布局:建议配套 32.768 kHz 晶体并靠近芯片布置,布线尽可能短且避开高速信号,保证时钟精度和相位稳定性。
  • 电源与去耦:主电源与备用电池供电域需合理设计,主供电旁放置 0.1 μF 陶瓷去耦电容;确保电池反向保护与安全。
  • SPI 时序与电平:通信时遵循器件时序规范,注意在 2.0 V 工作电压下逻辑电平兼容性;必要时在 MCU 端使用电平翻译。
  • 备份电池管理:对电池使用寿命与更换流程进行规划,避免在更换电池时丢失关键数据;为电池提供合理的断路/开关方案以便维护。
  • 上电复位与寄存器初始化:系统上电时检查时钟与寄存器状态并在必要时进行初始化或校准;监控时钟停止或故障标志以提高可靠性。
  • PCB 防护与 ESD:考虑到实际使用环境,加强静电保护与信号完整性设计,特别是在工业环境中。

七、封装与订购信息

  • 型号:DS1305EN+T&R;
  • 制造商:ADI(亚德诺/LINEAR);
  • 封装形式:TSSOP-20,适合表面贴装与自动化产线;
  • 供货方式:卷带盘(Tape & Reel),利于大批量贴片与装配。

总结:DS1305EN+T&R 提供稳定、低功耗的实时时钟及电池备份存储解决方案,具有宽电压与工业温度等级,适配多种嵌入式系统的时间管理与数据保持需求。采用 SPI 总线和 TSSOP-20 封装,便于工程快速集成与规模化生产。

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