DS1646-120

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 Maxim Integrated (formerly Dallas Semiconductor) DS1646-120 is a Real-Time Clock (RTC) designed to provide an accurate and cost-effective solution for almost any timing and calendar application.

The DS1646-120 is a low-power, low-cost real-time clock with dual alarm capabilities and battery-backup for system data retention in the event of power failure. This product is capable of operating in various operating environments and is appealing to a broad range of applications.

Applications for the DS1646-120 include system downtime, wake-up alarms, calendar events, scheduled events, and system reboot/set-up for embedded systems. It provides accurate timing for systems where tracking and knowledge of time is essential. Other potential applications of the DS1646-120 include access- and time-based security systems, monitoring systems with alarm applications, and industrial equipment.

The DS1646-120 utilizes a 32 kHz crystal oscillator, which is connected to a Precision Real-Time Clock (PRTC) sub-module that provides precise time and date information to an application processor or MCU. The PRTC sub-module also contains an alarm mechanism, with two independent alarm sub-modules, which can trigger off time or date settings. Additionally, the DS1646-120 has a Battery-Backed SRAM (EEPROM) which can maintain system configuration and status settings for up to 10 years of power failure.

The DS1646-120 supplies three outputs: 1 PPS (pulse-per-second), CLOCK_OUT, and ALARM. The PPS (or CLOCK_OUT) pin produces an event pulse of approximately 1 ms duration which can be used for accurate recording of time and events. The ALARM output pin produces an active-high signal triggered by a set of selectable criteria.

The DS1646-120 also has a set of control pins which can be used to control the state of the device. This includes allowing time to be set, disabling the alarm, and powering the device off, among others. Additionally, the device offers a Watchdog-Timer (WDT) feature that can be used to detect application software and hardware malfunction.

In addition to the control pins, the DS1646-120 also offers a wide variety of outputs which can be used to provide readback of time and date information. The device provides four 8-bit time/date registers which can be read through the serial I/O interface.

Overall, the DS1646-120 is an outstanding RTC option for embedded systems and other applications where accurate, low-cost and reliable timing is required. It offers an array of features and benefits which makes it an ideal option for many applications.

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