DS1340C-18#

The DS1340C-18# is a series of Real Time Clocks (RTCs) designed and produced by Maxim Integrated – a semiconductor manufacturing and design company that manufacturers analog, mixed-signal, power management and interface integrated circuits. The DS1340C-18# is built to provide a very low-power, versatile, and accurate solution to ensure reliable timekeeping in any application requiring regular timekeeping.

This specific series of RTCs is capable of tracking and storing the time of day, day of week, and year with leap year compensation. The timekeeping accuracy is incredible: backed by an oscillator with only 10 ppm drift, the clock will stay as accurate as ±10 seconds per day. The operating temperature range of -40°C to +85°C allows for extreme applications as well. Additionally, the device is claimed to run on a low-power current of typically ~300nA and has a battery backup terminal to ensure reliable timekeeping.

The DS1340C-18# offers full-featured calendar and digital clock functions, including hour, minute, second, day of the week, date, month, and year, plus a battery backup terminal with selectable battery switch-over. The calendar accuracy is also less than one second per day for both the Gregorian and Chinese lunar calendars, making it suitable for a wide range of calendar-based applications. Its multiple timer function options also add a great deal of versatility to the device, capable of implementing functions such as storing scheduled time events, periodic alarms, and sequence management.

The DS1340C-18# is an ideal choice for any application requiring accuracy and reliability in timekeeping. It can be used in a range of applications, from consumer appliances and healthcare to industrial control and communications. Specifically, the DS1340C-18# is suitable where accurate calendar and/or real-time clock functions, multiple timers, and battery backup are required. It is highly sought after in applications such as scheduling, financial and banking, home security, industrial control, and more.

The DS1340C-18# works using a hybrid, digital and analog, approach. The clock input is provided with two 16-bit digital counters and a Crystal Oscillator with reference frequency output. The counters are integrated in the same package, along with a switching circuit, control registers, and a battery backup. The clock counts the passing of each second and stores the data in the RAM memory. The counters count the passing of minutes, hours, days, months, and years, and store these values in the RAM as well. Furthermore, the clock features a trickle charge circuit for charging the backup battery, a RAM battery switch, and mode control registers for configuring certain aspects of the device.

The DS1340C-18# is an advanced, reliable, and powerful Real Time Clock solution. Its high level of accuracy and versatility allow it to be used in a wide range of applications, from consumer to industrial. With its low-power design, battery backup, and multiple timer functions, the DS1340C-18# is a great choice for any application requiring precise and reliable timekeeping.