STMicroelectronics (STMicroelectronics, referred to as ST) has released the world's smallest crystal oscillator and real-time clock (RTC) two-in-one chip with time, calendar and alarm functions. In a package the size of the smallest crystal oscillator on the market today, ST has successfully integrated the smallest real-time clock die and matching crystal, creating the world's smallest ultra-low power consumption measuring only 3.2x1.5mm Two sets of real-time clock and crystal oscillator--chip.

    The M41T62 is especially suitable for battery-powered portable product designs. The low operating voltage of 1.3V to 4.4V allows this clock chip to be powered directly by a lithium battery with an operating current of only 350nA. Many highly integrated microcontrollers have an on-chip real-time clock, but these chips are usually limited in functionality and require the addition of an external crystal. Unlike designs with microcontrollers or discrete solutions, this integrated solution addresses crystal-to-real-time clock matching, which can sometimes be tricky.

    Francescoltalia, Director of the Sensors and Microactuators Business Unit, STMicroelectronics MEMS, Sensors and High-Performance Analog Devices Product Group, said: "Having this advanced real-time clock in such a small crystal package provides an optimal solution for all portable devices. Real-time clock solution. The new product not only saves space, achieves optimized power consumption, but also can be directly charged by lithium batteries. This complete solution solves the problem of matching the crystal oscillator and the real-time clock, which is a headache for designers.” The M41T62 also simplifies product design . A stable 32kHz signal is generated at boot time, ensuring that today's processors and subsystems such as Bluetooth modules can boot up reliably. Other features that enhance design and system performance include oscillator failure detection (OFD), which helps the system detect power failures. It has functions such as shutdown time stamp and battery weak detection, and needs to add external devices to the real-time clock of the microcontroller. The M41T62 is also UL certified and has a built-in reverse diode.

    For those functions that rely on data logging, time stamping services, interval monitoring or synchronizing the system, the M41T62 improves system performance. such as SLR digital cameras, GPS receivers, portable multimedia players,

    Card readers, portable medical monitoring instruments (such as blood glucose meters).

    Main features of M41T62:

    3.2x1.5mm lead-free ceramic package.

    Real-time clock and crystal oscillator two-in-one chip, the package size is equivalent to the ultra-low power consumption of 350nA of the industry's smallest crystal oscillator device at 3V.

    Low operating voltage from 1.3V to 4.4V with stable 32kHz clock signal at startup.

    Oscillator fail detection for safe operation.

    Timing voltage as low as 1.0V.

    Programmable Alarm and Watchdog.