M41T93RMY6E

The M41T93RMY6E is a low-power, computer-compatible real-time clock (RTC) with personalized features and a wide range of applications. It is based on an I2C interface that is used to access its internal data registers, allowing the user to customize real-time calendar and alarms, square-wave outputs, and Time/Date counters. The module is particularly suitable for mobile, embedded, and automotive applications.

The M41T93RMY6E assesses accurate time and date information using two distinct clock sources. Firstly, the VEXT supply allows the user to select between either an external 32kHz quartz crystal or an external DCF-77 signal for timekeeping. The second source of information comes from the onboard digital control oscillator (DCXO), which maintains oscillations over a wide range of temperatures, providing system designers with reliable and cost-effective solutions for their time and date applications.

The time registers on the M41T93RMY6E are updated by the DCXO clock signal whenever power is applied, regardless of the VEXT source. This ensures that the system time is within one second of specified accuracy whenever power cycles. Moreover, the device is also equipped with an integrated On-Chip Power Protect logic circuit, which prevents an accidental power-on and hence damage to the module upon power cycling.

The M41T93RMY6E applications include the following. The device can provide the host system or peripheral devices with the exact time of day or year, data and alarm notifications, or a local oscillation square wave signal. It is also suitable for applications such as data loggers, vital sign monitoring, emergency call systems, and car navigation systems. The module can be used as a reference clock in clock-synchronized systems, such as a digital audio broadcast (DAB, i.e., HD Radio) or a digital multimedia broadcast (DMB) system.

The M41T93RMY6E architecture is based on a combination of analog, digital, and microprocessor devices. The module contains a low-frequency oscillator that provides an accurate timebase for timekeeping calculations. The internal storage registers are updated by the I2C bus according to the date and time information present in the module as either an extrernal crystal/signal or from an onboard oscillator. The digital logic provides commands for alert interrupts and the transfer of timing data. The microprocessor part is responsible for controlling the I2C transactions and updating the registers accordingly.

The M41T93RMY6E can be used with a variety of operating systems, and has been fully tested with Windows and Linux. The module is suitable for simple or complex solutions and applications with varying levels of complexity, and can also be integrated into microcontroller- or microprocessor-based designs. The M41T93RMY6E provides reliability and accuracy, allowing users to build robust, high performance and cost-effective real-time clock systems with minimal effort.