MAX31342

Low-Current, Real-Time Clock with I2C Interface

World's smallest RTC in WLP


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说明

The MAX31342 low-current, real-time clock (RTC) is a time-keeping device that provides an extremely low time-keeping current, permitting longer life from a power supply. The MAX31342 supports 6pF high-ESR crystals, which broaden the pool of usable crystals for the devices. This device is accessed through an I2C serial interface. An integrated power-on reset function ensures deterministic default register status upon power-up.

Other features include two time-of-day alarms, interrupt outputs, a programmable square-wave output, and a serial bus timeout mechanism. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in 24-hour mode. The MAX31342 also includes an input for synchronization. When a reference clock (e.g., 32kHz, 50Hz/60Hz Power Line, GPS 1PPS) is present at the CLKIN pin and the enable external clock input bit (ECLK) is set to 1, the MAX31342 RTC is frequency-locked to the external clock and the clock accuracy is determined by the external source.

The device is available in lead(Pb)-free/RoHS-compliant, 8-pin wafer-level package (WLP) 1mm x 2mm package with 0.5mm pitch. The device supports the -40°C to +85°C extended temperature range.

MAX31342: Functional Diagram MAX31342: Functional Diagram 放大+

关键特性

  • Increases Battery Life
    • 150nA Timekeeping Current
    • Wide Range of External Crystals with CL = 6pF and ESR up to 100kΩ for Minimal Current Draw
  • Provides Flexible Configurability
    • Programmable Square Wave Output for Clock Monitoring
  • Saves Board Space
    • Integrated Load Capacitors for Crystal Oscillator
    • 1mm x 2mm, 8-Bump WLP with 0.5mm Pitch
  • Value Add Features for Ease of Use
    • +1.6V to +3.6V Operating Voltage Range
    • Countdown Timer with Repeat Function
  • Integrated Protection
    • Power-On Reset for Default Configuration
    • Lockup-Free Operation with Bus Timeout

应用

  • 医疗
  • 销售终端(POS)
  • 便携式音频
  • 便携式仪表
  • 电表
  • 远程信息处理
  • 可穿戴设备
Part NumberInterfaceVSUPPLY
(V)
Time Keeping Current
(nA)
CL
(pF)
Time of Day AlarmsFunctionsPackage/PinsBudgetary
Price
typSee Notes
MAX31342 NEW!I2C
1.8
3
3.3
15062RTC
WLP/8
$0.60 @1k
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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。


MAX31342SHLD: Evaluation Kit for the MAX31342

质量和环境数据

申请可靠性报告: MAX31342 
无铅封装的锡(Sn)晶须报告

其它资源

How to Use the MAX31342SHLD Evaluation Kit

CAD Symbols and Footprints

  • MAX31342EWA+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    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。

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    低电流、实时时钟,具有I2C接口和电源管理

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    MAX31342
    Low-Current, Real-Time Clock with I2C Interface

    • Increases Battery Life
    • Provides Flexible Configurability
    • Saves Board Space

    类型 编号 标题
    评估板10138MAX31342SHLD Evaluation Kit for the MAX31342