DS1390U-33
Low-voltage RTC with trickle charger
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製造商零件號 # : DS1390U-33
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包裝/封裝: MSOP10
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製造商: Analog Devices
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產品分類 : Real Time Clocks
品質保證
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服務與包裝
服務與包裝
About After Sales Service
All Parts Extended Quality Guarantee
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例子
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捲帶式
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剪膠帶
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管或託盤
DS1390U-33 數據表
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目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
主要特徵
- Power-On Reset and Low-Voltage Detect Pin
- Interrupt Output for External Interrupt Handling
- Square-Wave Output for Timing and Synchronization Applications
應用
- Healthcare Solutions
- Patient Monitoring
- Emergency Response
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
Product Category ! | Real Time Clock | RoHS | N |
Mounting Style | SMD/SMT | RTC Bus Interface | Serial |
Time Format ! | HH:MM:SS:hh | Battery Backup Switching | Backup Switching |
Supply Voltage - Max | 5.5 V | Supply Voltage - Min | 2.97 V |
Minimum Operating Temperature | - 40 C | Maximum Operating Temperature ! | + 85 C |
Brand | Analog Devices / Maxim Integrated | Function | Alarm, Calendar, Clock, Trickle Charger |
Product Type ! | Real Time Clocks | Series | DS1390U |
Subcategory | Clock & Timer ICs | Part # Aliases | DS1390U |
常見問題解答
What is DS1390U-33?
The DS1390U-33 is a low-voltage SPI/3-wire serial real-time clock (RTC) designed by Maxim Integrated. It provides accurate timekeeping and calendar functions, making it ideal for applications such as data logging, time stamping, and battery-backed systems.
How Does DS1390U-33 Work?
The DS1390U-33 operates as a real-time clock by maintaining time and date information using an internal oscillator. It communicates with a microcontroller or system using SPI or 3-wire serial interface protocols. The RTC features battery backup to ensure timekeeping continuity even in the absence of main power.
How Many Pins does DS1390U-33 have and What are the Functions of the Pinout Configuration?
The DS1390U-33 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC: Power supply pin for the RTC.
- GND: Ground pin.
- SO, SI, SCK: SPI interface pins for communication.
- CE: Chip enable pin for SPI communication.
- 32KHZ: 32kHz crystal oscillator input.
- VBAT: Battery backup input for maintaining timekeeping.
What are the Pros and Cons of DS1390U-33?
Pros:
- Low Voltage Operation: Operates at low voltage levels, suitable for battery-powered applications.
- Accurate Timekeeping: Provides precise time and date information for various applications.
- Battery Backup: Ensures continuous timekeeping even in power-loss scenarios.
- Simple Interface: Supports SPI/3-wire serial interface for easy communication.
- Compact Package: The 8-pin SOIC package is space-efficient for compact designs.
Cons:
- Limited Functionality: May not have advanced features compared to higher-end RTCs.
- External Crystal Required: Requires an external 32kHz crystal for timekeeping accuracy.
- Programming Complexity: Setting initial time and date may require specific procedures.
Are There Any Equivalents/Alternatives to DS1390U-33 for Recommendation?
- The DS3231 from Maxim Integrated is a similar real-time clock with enhanced temperature compensation.
- Alternatives to the DS1390U-33 include the MCP7940N from Microchip Technology and the RV-1805-C3 from Micro Crystal.
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