ST Life.augmented
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シリアル・リアル・タイム・クロック

ST's serial real-time clocks range from ultra-low power devices for portable applications to high-accuracy parts with analog calibration up to factory-calibrated RTC modules with an embedded crystal.

SRAM supervisor functions can transform a standard volatile SRAM into a non-volatile type of memory by using the backup power of the RTC. Additional functions like programmable watchdog, an early power-fail warning circuit and the power-on reset/low-voltage detect feature provide support for master MCU operations. The programmable alarm with repeat mode may be used for battery back-up operations.

Battery with crystal option
ST's removable/replaceable SNAPHAT® battery top contains a lithium coin-cell battery and a 32-kHz crystal. It is compatible with all of ST's serial- and parallel-interface real-time clocks in surface-mount SOH-28 and SOH-44 packages.

The SNAPHAT top is designed to be "snapped on" after the SOIC is surface-mounted on the PC board, preventing the battery and crystal from being exposed to the high temperatures of the surface mount process.

To evaluate the battery capacity consumption and lifetime, visit the Real-time clock battery life calculation webpage.
C code examples for interfacing with our serial RTCs are also available.

ウェアラブル機器向け水晶内蔵タイプの超小型リアルタイムクロック

ウェアラブル機器向け水晶内蔵タイプの超小型リアルタイムクロック

STのM41T62LC6Fは、サイズ、重量、消費電力に対して制約のあるウェアラブルデバイスに最適な水晶内蔵タイプの超小型リアルタイムクロックです。

このリアルタイムクロックは、周波数ずれが極めて少なく25℃環境で月差は約5秒となります。

またスタンバイ時で350nAと非常に低消費かつ、小型パッケージ(1.5mm x 3.2nmm)で提供されます。

 

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