MAX31343

±5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator

Industry's Lowest Power MEMS-Based Temperature-Compensated RTC Reduces Crystal Mechanical Failure Susceptibility


点击查看特定型号的库存状况。

说明

The MAX31343 is a low-cost, extremely accurate, I2C real-time clock (RTC). The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the microelectromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and eliminates the external crystal requirement in the system. The MAX31343 is available in the 8-pin WLP and TDFN packages.

The RTC maintains seconds, minutes, hours, day, date, month, year, and century information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year up to year 2199. The clock operates in the 24-hour format. Other features including two programmable time-of-day alarms, interrupt output, uncompensated programmable clock output, and temperature-compensated programmable square-wave output. Address and data are transferred serially through an I2C bidirectional bus. A voltage reference and comparator circuit monitors the status of VCC to detect power failures and automatically switch to the backup supply when necessary. See the Typical Application Circuit for more details.

MAX31343: Simplified Block Diagram MAX31343: Simplified Block Diagram 放大+

关键特性

  • Highly Accurate RTC with Integrated MEMS Resonator Completely Manages All Timekeeping Functions
    • Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, Year, and Century with Leap-Year Compensation Up to Year 2199
    • Timekeeping Accuracy ±5ppm (±0.432 second/day) from -40°C to 85°C
    • Two Time-of-Day Alarms
    • Temperature-Compensated Programmable Square-Wave Output
    • Uncompensated Programmable Clock Outputs
    • Automatically Switch over to Backup Battery or Supercapacitor on Power-Fail
    • Digital Temperature Sensor with ±3°C Accuracy
    • +1.6V to +5.5V Supply Voltage
  • 64-Byte RAM for User Data Storage
  • Simple Serial Interface Connects to Most Microcontrollers
    • I2C Interface
  • Battery-Backup Input for Continuous Timekeeping
  • Low-Power Operation Extends Battery-Backup Runtime
  • Operating Temperature Range: -40°C to 85°C
  • 2.1mm x 2.3mm, 8-Pin WLP Package
  • 4mm x 3mm, 8-Pin TDFN Package
  • Underwriters Laboratories® (UL) Recognized

应用

  • null
  • 通信
  • 手持式仪表
  • 工业
  • 电表
  • 可穿戴设备

请查看具体的参数规格 Timekeeping & Real-Time Clocks (78)


Part NumberInterfaceVSUPPLY
(V)
Time Keeping Current
(nA)
Memory TypeMemory Size
(Bytes)
Time of Day AlarmsIntegrated ResonatorFunctionsPackage/PinsBudgetary
Price
typSee Notes
MAX31343 NEW!I2C1.6 to 5.5940NV SRAM642MEMsRTC
COW/8
TDFN/8
$1.72 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX31343SHLD: Evaluation Kit for the MAX31343

工具和模型

  • MAX31343 IBIS Model
  • 申请可靠性报告: MAX31343 
    型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

    质量管理体系 >
    环境管理体系 >

     
    Status:
    Package:
    Temperature:

    相关资料


    MAX31343
    ±5ppm, I2C Real-Time Clock with Integrated MEMS Oscillator

    • Highly Accurate RTC with Integrated MEMS Resonator Completely Manages All Timekeeping Functions
    • 64-Byte RAM for User Data Storage
    • Simple Serial Interface Connects to Most Microcontrollers


    类型 编号 标题
    评估板10604MAX31343SHLD Evaluation Kit for the MAX31343