DS1742W-120

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The DS1742W-120 (hereafter referred to as the DS1742) is a Real Time Clock (RTC) chip used in numerous applications. It is widely used in embedded systems, digital audio players, and industrial timing applications. The DS1742 is a 16-bit, battery-backed, CMOS RAM and real-time clock. The chip includes four registers which store the system’s time and date information. The DS1742 also includes an independent watchdog timer and a one-time programmable calendar.

Application Field

The DS1742 is ideal for embedded systems that require a reliable and accurate real-time clock with low power consumption. The chip is designed to easily integrate with hardware and software designs, making it suitable for a range of applications. It is widely used in digital audio players and various industrial timing applications. Examples of such products include gaming systems, industrial controllers, and medical products.

Working Principle

The DS1742 works by utilizing a integrated circuit (IC) with a built-in oscillator crystal. This oscillator crystal has a specific frequency, which is the rate at which the clock will measure time. The crystal is connected to the IC, and the IC contains several registers that store the time and date information. The registers are 16-bit, allowing for extremely precise and accurate time-measurement. In addition, the DS1742 contains an independent watchdog timer and a one-time programmable calendar.

The DS1742 operates in one of two modes: an autostart mode, or a manual-start mode. In the autostart mode, the DS1742 begins to measure time after power is applied. This can be used in situations where accuracy is critical, as time passing can be measured even in the event of a power failure. When the manual-start mode is used, the DS1742 begins counting time when certain conditions, such as a certain voltage at a certain pin, are met. Additionally, the DS1742 has a built-in power-management system that reduces power consumption, thus improving battery life.

Data transactions between the DS1742 and the system processor are accomplished via an asynchronous two-wire serial interface. Data can be written to, or read from, the DS1742 by writing to the chip’s registers. As with most RTCs, the DS1742 can be configured to output an interrupt when certain events occur. This makes it easy to create a system that operates based on a certain time or event.

Conclusion

The DS1742 is an extremely versatile and reliable real-time clock chip. It is widely used in embedded systems, digital audio players, and other timing applications. The chip is easy to integrate with software and hardware designs, and has a built-in power-management system to reduce power consumption. Data can be written to, or read from, the registers via an asynchronous two-wire serial interface. The DS1742 also contains an independent watchdog timer and a one-time programmable calendar. Overall, the DS1742 is an excellent choice for any embedded system in need of a reliable and accurate real-time clock.

The specific data is subject to PDF, and the above content is for reference