M41T66

NRND
Design Win

串行实时时钟(RTC),具有报警功能

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概述
样片和购买
解决方案
文件
CAD资源
工具与软件
质量与可靠性
开始
Partner products
Sales Briefcase

产品概述

描述

The M41T66 is a low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator (external crystal controlled). Eight registers are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 8 registers provide status/control of alarm, square wave, calibration, and watchdog functions. Addresses and data are transferred serially via a two line, bidirectional I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte. Functions available to the user include a time-of-day clock/calendar, alarm interrupts, programmable square wave output, and watchdog output. The eight clock address locations contain the century, year, month, date, day, hour, minute, second and tenths/hundredths of a second in 24-hour BCD format. Corrections for 28-, 29- (leap year), 30- and 31-day months are made automatically.
The M41T66 is supplied in a 16-pin QFN.
  • 所有功能

    • Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
    • 32 KHz crystal oscillator integrating load capacitance and high crystal series resistance operation
    • Oscillator stop detection monitors clock operation
    • Serial interface supports I2C bus (400 kHz)
    • 525 nA timekeeping current at 3 V
    • Low operating current of 35 μA (at 400 kHz)
    • Timekeeping down to 1.0 V
    • 1.3 V to 4.4 V I2C bus operating voltage
      • Allows use in lithium ion rechargeable applications
    • 32 KHz square wave on power-up to drive a microcontroller in low-power mode
    • Programmable (1 Hz to 32 KHz) square wave
    • Programmable alarm with interrupt function
    • Accurate programmable watchdog (from 62.5 ms to 31 min)
    • Software clock calibration to compensate deviation of crystal due to temperature
    • Automatic leap year compensation
    • Operating temperature of –40 to 85 °C
    • Lead-free 16-pin QFN package

电路原理图

All tools & software

    • 产品型号
      状态
      描述
      类型
      供应商

      STSW-SRTC001

      批量生产

      串行RTC的I2C代码

      时钟与定时电路软件 ST
      STSW-SRTC001

      描述:

      串行RTC的I2C代码

      STSW-SRTC002

      批量生产

      SPI代码 - 串行RTC

      时钟与定时电路软件 ST
      STSW-SRTC002

      描述:

      SPI代码 - 串行RTC

EDA符号、封装和3D模型

STMicroelectronics - M41T66

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Symbols

符号

Footprints

封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
M41T66Q6F
NRND
QFN-16L 工业 Ecopack2

M41T66Q6F

Package:

QFN-16L

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

QFN-16L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

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产品型号
Order from distributors
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Budgetary Price (US$)*/Qty
NVRAM size (B)
Country of Origin
最小值
最大值
M41T66Q6F 无法联系到经销商,请联系我们的销售办事处
NRND
EAR99 NEC Tape and Reel QFN-16L -40 85

-

MALAYSIA

M41T66Q6F NRND

封装:
QFN-16L
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

M41T66Q6F

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

NVRAM size (B):

-

Country of Origin:

MALAYSIA

无法联系到经销商,请联系我们的销售办事处
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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商