Abstract: This application note describes the format used for Maxim Real-Time Clock (RTC) time and date registers. Maxim RTCs (real-time clocks) provide both current clock and calendar information to the end user. Many of...

Abstract: This application note describes real-time clock (RTC) and crystal selection criteria and proper layout techniques for connecting a 32kHz crystal to a RTC. Following these guidelines will prevent time errors and incorrect time due...

Abstract: This application note describes crystal selection criteria and proper layout techniques for connecting a 32kHz crystal to a real-time clock (RTC). Following these guidelines will prevent time errors and incorrect time due to cros...

Abstract: This application note describes crystal selection and layout techniques for connecting a 32,768Hz crystal to a real-time clock (RTC). It also provides information about oscillator circuit-design criteria, system design, and manuf...

Abstract: This application note explains the hardware and software differences between the Motorola MC146818A and the Dallas DS12885 Real-Time Clocks (RTCs). OverviewThe Motorola MC146818A is no longer in produ...

Abstract: This application note explains the hardware and software differences between the Motorola MC146818 and the Dallas DS12885 Real-Time Clocks (RTCs). OverviewThe Motorola MC146818 is no longer in product...

Abstract: This application note describes how to interface a Phantom Real-Time Clock (RTC) in a microcontroller memory system. It also describes some of the programming considerations and common problems. Descriptio...

Abstract: This application note describes how to use a Nonvolatile Timekeeping RAM with an 8051-type microcontroller. An example schematic is provided. Source code provides an example of how to read and write the real-time clock (RTC) regi...

Abstract: This application note addresses how to convert the 32-bit time value into a date and time value that can be put in the form of MM/DD/YYYY, HH:MM:SS. An algorithm for converting from a date and time to binary seconds is also descr...

Abstract: This application note provides an example schematic and software for the DS1672. The example software converts the 32-bit elapsed time value in the real-time clock (RTC) to year, month, date and time format. The example uses a su...

Abstract: This application note shows an example of how to interface a Phantom Real-Time Clock (RTC) to a microcontroller. This note includes a schematic and example code. Pin Assignment...

Abstract: This application note provides an overview of the PowerCap product line. The PowerCap products allows surface-mounting of the component base, while keeping the temperature sensitive crystal and or battery in a seperate, snap-on a...

Abstract: A real-time clock (RTC) allows a system to synchronize or time-stamp events to a time reference that can be easily understood by the user. Because RTCs are used in an increasing number of applications, designers should familiariz...

Abstract: This application note describes the replacement of the DS1287/DS12887 real-time clock (RTC) or "CMOS clock" in a personal computer (PC). The CMOS clock is also sometimes referred to as the "battery" or "CMOS battery." ...

Abstract: Dallas Semiconductor/Maxim offers a variety of serial real-time clocks (RTCs). Several of these RTCs use the industry-standard Motorola SPI interface to communicate with a microprocessor. This application note helps customers und...

Abstract: This application note provides an example of hardware and software for interfacing an SPI™ real-time clock (RTC) to a Motorola® digital signal processor (DSP) that has a built-in SPI-interface module. This example uses ...

Abstract: Most Dallas Semiconductor real-time clocks (RTCs) include a supply input for a backup power source. This alternate supply source allows the RTC to maintain the current time and date while the main power source is absent. This app...

Abstract: This note demonstrates an application using the DS1678 real-time event recorder. The software example includes basic operating routines. A schematic of the application circuit is included. DS1678 Pin Assignment...

Abstract: This application note describes how to use the DS1602 or DS1603 Elapsed Time Counters to record power cycling information. Pin Assignment ...

Abstract: This application note provides an example of hardware and software for interfacing a Serial Peripheral Interface (SPI) RTC with a Motorola DSP that has a built-in SPI interface module. This example uses a Motorola DSP Demo kit as...