
意法半导体串行实时时钟应用范围广泛,从面向便携式应用的超低功耗器件到具备模拟校准功能的高精度零部件,一应俱全。该产品系列还提供工厂校准的RTC模块(采用嵌入式晶体)。
高端RTC在性能和功能方面绝不大折扣。它们兼具低待机电流和一些高端功能(如篡改检测(带时间戳)和看门狗SRAM监控功能),以满足所有高端应用的需求。
带晶体选件的电池意法半导体的可移动/可替换SNAPHAT电池顶部包含一个纽扣锂电池和32 kHz晶体。与意法半导体的表面装配型SOH-28和SOH-44封装的所有串行和并行接口实时时钟兼容。
SNAPHAT的顶部设计为将SOIC表面装配在PC板上之后“卡入”,以防电池和晶体暴露于表面安装过程的高温下。
要评估电池容量消耗及寿命,请访问实时时钟电池寿命计算网页。
另外提供了用于我们串行RTC接口的C代码示例。
产品类型
高端RTC在性能和功能方面绝不打折扣,兼具低待机电流和一些高端功能(如篡改检测(带时间戳)和看门狗SRAM监控功能),以满足所有高端应用的需求。
对于高精度计时,晶体产品系列是完美的选择,因为工厂校准的振荡器已将误差降到+/-5 ppm。内嵌在封装中的晶体进一步提高了振荡器的抗干扰性能,不受PCB走线连接的影响。
此外,SNAPHAT的顶部内嵌晶体和电池,再加上采用SOH-28封装的RTC,更是如虎添翼。
基本产品系列提供工业标准SO-8封装,具有易于使用和兼容性高等优点。
了解我们的串行接口RTC产品系列

优点
- 高精度计时的误差低至+/-5 ppm
- 嵌入式晶体选件确保高抗干扰性能
- 工业标准封装确保高兼容性
- SRAM监控功能
- 带时间戳的篡改检测
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Real-time clock for demanding wearable devices

ST’s M41T62LC6F real-time clock is the perfect match for wearable devices when size, weight, and power-efficiency matters.
It offers a very low frequency error at 25 °C which equates to about 5 seconds per month, an ultra-low power consumption of 350 nA in standby, and comes in an ultra-small 1.5 x 3.2 mm package with an embedded crystal oscillator.
- M41T82 Serial I²C bus real-time clock (RTC) with battery switchover
- M41T0 Serial real-time clock (RTC)
- M41T93 Serial SPI bus real-time clock (RTC) with battery switchover
- M41T83 Serial I²C bus real-time clock (RTC) with battery switchover
- M41ST87W 5.0 V, 3.3/3.0 V secure real-time clock , NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
- M41T81 Serial real-time clock (RTC) with alarm
- M41T94 Serial real-time clock (RTC) with 44 bytes NVRAM and reset
- M41T56 Serial real-time clock (RTC) with 56 bytes NVRAM
- M41T80 Serial real-time clock (RTC) with alarm
- M41T00 Serial real-time clock (RTC)
- M41T00AUD Serial real-time clock (RTC) with audio
- M41T11 Serial real-time clock (RTC) with 56 bytes of NVRAM
- M41ST85W 3.0/3.3 V I²C combination real-time clock, NVRAM supervisor and microprocessor supervisor
- M41T81S Serial real-time clock (RTC) with alarm
- M41T00S Serial real-time clock (RTC)
- M41T01 Serial real-time clock (RTC) with built-in battery switchover circuit
- M41T62 Low-power serial real-time clock (RTC) with alarm