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
精选 视频
All tools & software
全部资源
| Resource title | 版本 | Latest update |
|---|
产品规格 (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 2.0 | 19 Sep 2016 | 19 Sep 2016 |
应用手册 (5 of 8)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 13 Sep 2018 | 13 Sep 2018 | ||
| 4.0 | 15 Feb 2015 | 15 Feb 2015 | ||
| 4.1 | 19 Mar 2021 | 19 Mar 2021 | ||
| 2.0 | 19 Mar 2021 | 19 Mar 2021 | ||
| 1.0 | 14 May 2015 | 14 May 2015 | ||
| 4.0 | 19 Mar 2021 | 19 Mar 2021 | ||
| 2.0 | 03 Apr 2013 | 03 Apr 2013 | ||
| 2.0 | 13 Sep 2018 | 13 Sep 2018 |
手册 (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 26 Feb 2020 | 26 Feb 2020 |
EDA符号、封装和3D模型
STMicroelectronics - M41T66
为您的应用下载所有EDA符号、封装和3D模型，加快您的设计速度。您可以从大量CAD格式中进行选择，以匹配您的设计工具链。
符号
封装
3D模型
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | NVRAM size (B) | Country of Origin | Budgetary Price (US$)*/Qty | 更多信息 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | Buy Direct | 批量生产 | EAR99 | NEC | Tape And Reel | QFN-16L | -40 | 85 | - | MALAYSIA | 0.823 / 1k | ||
