The M41ST87WMX6TR is a highly integrated, low-power serial real-time clock (RTC) with a battery-backed SRAM and an embedded crystal. Manufactured by STMicroelectronics, a global leader in semiconductor solutions, this device is designed to provide precise time tracking and data retention even when the main power is lost.
Key Features
- Real-Time Clock: Counts seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2099.
- Serial Interface: Features a serial I2C interface for easy integration with a wide range of microcontrollers.
- Battery-Backed SRAM: Includes 44 bytes of battery-backed non-volatile SRAM, ensuring data retention during power loss.
- Integrated Crystal: Comes with an embedded 32.768 kHz quartz crystal that simplifies design and saves board space.
- Alarm Function: Programmable alarm function allows the device to wake up a system at a predetermined time.
- Watchdog Timer: An integrated watchdog timer can be used for system reset in case of a software lock-up.
Applications
The M41ST87WMX6TR is ideally suited for a variety of applications that require accurate timekeeping and data storage, such as:
- Industrial Control Systems
- Utility Meters
- POS Terminals
- Consumer Electronics
Technical Specifications
Parameter
Value
Package
SOX28
Voltage Supply
2.7V to 5.5V
Operating Temperature
-40°C to +85°C
The M41ST87WMX6TR from STMicroelectronics is a reliable and versatile RTC component that brings together a host of features to maintain accurate time and data across a range of applications. Its integration of a crystal resonator, alarm, watchdog timer, and battery-backed SRAM into a single package makes it a compact and efficient choice for designers looking to optimize their systems for both performance and space.
