DS1338U-33+T&R

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The clock/timing - real time clock is a crucial device for many time related applications, such as time synchronization and accurate time logging. The Dalas Semiconductor’s DS1338U-33+T&R is a leading product in the real time clock category. It has a long list of specifications and features which make it suitable for a wide range of applications.

The DS1338U-33+T&R operates at a frequency of 32.768kHz and has an on-chip oscillator circuit which reduces power consumption, increases system accuracy and offers stability over extended operating temperature range. The integrated temperature sensor ensures accuracy at temperatures ranging from -20℃ to +85℃. It is available in the common 8-pin PDIP, 8-pin SOIC, 8-pin SSOP and 8-pin TSSOP packages.

The device includes a configurable user RAM, 8-bit programmable count and a 24-bit counter/timer which can be used to count seconds, minutes, hours and days. The embedded watch crystal circuit ensures the accuracy of time keeping. It also has an automatic timer which can be used to generate an interrupt signal when a set time has passed. Additionally, the device support time capture and an embedded leap-year for years matching to four digits.

In terms of applications, the DS1338U-33+T&R is typically used in industrial automation controllers and routers, communications systems, automotive systems, power management, personal computers, and monitoring/controller systems. It is also widely used for time recording, time display, and network time synchronization.

The DS1338U-33+T&R has two main working principles. First, it counts microseconds based on the 32.768KHz clock signal provided to its oscillator circuit. This ensures that the RTC can keep track of time accurately, even if the system power is turned off. Second, the device uses a programmable timer to generate interrupts at a designated time interval. The interval can be configured based on user preference.

Overall, the Dallas Semiconductor’s DS1338U-33+T&R is an efficient real time clock module with an attractive list of features and specifications. Its versatility makes it suitable for many applications, ranging from automotive to industrial control to personal computer systems.

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