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ADI/LINEAR DS1339U-33+T&R DS1339U
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR DS1339U-33+T&R
- Type
- MSOP-8
- Minimum package
- 3000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- DS1339U-33+T&R
- Electronic Component
- 1
- Package
- MSOP-8
- Electronic Component
- Real-Time Clock (RTC)
- Electronic Component
- 0.138g
- Electronic Component
- 1
- Features
- Power Management and Battery;; Programmable Clock Output
- Electronic Component
- BM0229954868
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.97V~5.5V
- Operating Current
- 450uA
- Interface Type
- I2C
- 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.
DS1339U-33+T&R 产品概述
一、主要参数概览
- 接口类型：I2C 串行接口
- 工作电压：2.97V ～ 5.5V
- 工作电流：典型 450μA（运行模式）
- 静态电流(Iq)：25nA（备用/掉电保持）
- 晶振：外置（标准 32.768 kHz 晶体）
- 闹钟输出：有（外部中断/方波/闹钟信号输出，具体功能请参考芯片寄存器）
- 工作温度：-40℃ ～ +85℃
- 品牌/产家：ADI（原 Linear/Maxim 系列）
- 封装：MSOP-8（紧凑型封装，便于空间受限的设计）
二、功能与特点
DS1339U-33+T&R 为低功耗 I2C 实时时钟解决方案，提供持续时间基准与日历功能。其典型功能包括时、分、秒、日、月、年寄存器和闰年处理（具体寄存器与位定义以数据手册为准）；支持 12/24 小时制；具备闹钟/警报输出，可用于唤醒微处理器或驱动外部中断。极低的备用电流（25nA）保证在电池供电或掉电情况下长时间保存时间信息。
三、电气与环境特性
芯片支持宽电源电压范围（2.97V 至 5.5V），便于与单节锂离子电池或典型 3.3V/5V 系统兼容。运行电流约 450μA（在晶振工作与 I2C 通信时），而在待机/电池保持模式下静态电流仅 25nA，有利于延长电池寿命。工业级温度范围（-40℃ 至 +85℃）适合多数工业与消费类应用。
四、封装与布局建议
MSOP-8 小型封装适合 PCB 空间受限场合。建议在布局时：
- 为 VCC 做良好去耦（靠近引脚放置 0.1μF 陶瓷电容）；
- 在晶体两端加合适负载电容并尽量缩短晶体与芯片之间走线；
- I2C 总线使用上拉电阻，避免长线引入干扰；
- 为电池备份路径预留清晰电源切换与保护设计。
五、典型应用
适用于对时间精度与低功耗有要求的系统，如便携式设备、数据记录仪、智能仪表、工业控制与通信设备等。闹钟输出可用于定时唤醒 MCU、定时采样或事件触发。
六、设计与选型提示
在选型与系统集成时建议：
- 查阅完整数据手册以确认 I2C 地址、寄存器映射与闹钟/方波配置细节；
- 根据实际温度与精度需求选择匹配规格的晶体与负载电容；
- 评估系统在电池保持模式下的电源切换方案，确保备份电池供电可靠；
- 如需更高级功能（电池充电、温度补偿等），比较同类器件后再决定。
总之，DS1339U-33+T&R 以其宽电压、超低静态电流与工业级温度范围，为需要稳定时钟与长电池寿命的嵌入式系统提供了可靠且易于集成的解决方案。若需更详细的寄存器功能、时序和典型应用电路，请参考 ADI 官方数据手册。
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