M41T00 Serial real-time clock (RTC)
The M41T00 is a low power serial real time clock with a built-in 32.768 kHz oscillator (external crystal controlled). Eight bytes of the RAM areused for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two-line bi-directional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.
The M41T00 clock has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell.
Typical data retention time is in excess of 5 years with a 50 mA/h 3 V lithium cell (see Section 2.10: Data retention mode for AC/DC characteristics).
The M41T00 is supplied in 8-lead plastic small outline package
技术特性
- For new designs use M41T00S
- Counters for seconds, minutes, hours,day, month, years, and century
- 32 kHz crystal oscillator integrating load capacitance (12.5pF) providing exceptional oscillator stability and high crystal series resistance operation
- Serial interface supports I²C bus (100 kHz protocol)
- Ultra low battery supply current of 0.8 μA (typ at 3V)
- 2.0 to 5.5V clock operating voltage
- Automatic switchover and deselect circuitry (for 3V application select M41T00S datasheet)
- Software clock calibration to compensate crystal deviation due to temperature
- Automatic leap year compensation
- Operating temperature of -40 to 85˚C
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功能框图
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M41T00 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| M41T00M6E |
Active |
|
|
SO-8 |
Tube |
-40 °C-85°C |
M41T00M6E |
| M41T00M6F |
Active |
|
|
SO-8 |
Tape And Reel |
-40 °C-85°C |
M41T00M6F |
DATASHEET
| 描述 |
版本 |
大小 |
| M41T00 : DS1447: Serial real-time clock |
9 |
192KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN922: Using a Super Cap to back up the M41T56, M41T00, M41T11, M41T81, M41T94, and M41ST84W (16-pin) |
2 |
85KB |
| AN1012: Predicting the battery life and data retention period of NVRAMs and serial RTCs |
4 |
440KB |
| AN934: How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products |
4 |
124KB |
| AN1011: Battery technology used in NVRAM and real-time clock (RTC) products from ST |
4 |
249KB |
| AN3060: Applications guide for serial real-time clocks |
1 |
355KB |
USER MANUALS
| 描述 |
版本 |
大小 |
| UM0276 : STFPC311 LED evaluation board hardware description and user manual |
2 |
503KB |
