DS17887-5+

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The DS17887-5+ is a Real Time Clock (RTC) module manufactured by Dallas Semiconductor and is used in a variety of applications requiring accurate timing clocks. It is a 32-bit oscillator module with a host of features including an alarm, clock voltage monitoring, battery backup, and a low power consumption level. The DS17887-5+ has the ability to run off an internal or external crystal oscillator, which gives the module an incredibly accurate time base.

The primary application of the DS17887-5+ is for network synchronous clock protocol applications. It is also perfect for timing applications that require accurate clock readings such as in industrial automation equipment and computer systems. Additionally, the DS17887-5+ can be used in Embedded Systems and in Network Equipment, Data Storage, and Security/Surveillance Systems.

The DS17887-5+ also has several features that make it ideal for low-power applications. The most notable feature is its ultra-low power consumption even when using the additional features. It has a total quiescent current of 2.5uA, which is far below the current levels found in other comparable devices. Additionally, the DS17887-5+ utilizes an efficient voltage monitoring feature to extend the battery life.

At the heart of the DS17887-5+ is a Temperature Compensated Crystal Oscillator (TCXO) module typically using an AT-cut crystal. This TCXO module is highly stable and is designed to maintain its accurate timing when there are changes in environment. The TCXO will use either an internal or external crystal, depending on the needs of the application.

The TCXO module within the DS17887-5+ converts the digital signal to an analog signal and measures the frequency. This frequency is then used as a reference signal to set the clock accurately. The TCXO also compensates for drift due to temperature changes and vibration, and it also maintains the timing accuracy over a variety of operating temperature ranges.

The DS17887-5+ also has an alarm function built-in for applications such as wake-up alarms or other routine notifications. It supports both a single alarm and a daily alarm, and has an adjustable wake-up time resolution from seconds to minutes. The user can set different alarms for different days of the week, and the alarms are triggered at the specified time.

In addition to its alarm capabilities, the DS17887-5+ also has a voltage monitoring feature which monitors its input voltage for possible irregularities. This feature automatically shuts down the module if the input voltage falls below a certain level, which prevents the device from being damaged.

The DS17887-5+ is an extremely reliable, low power consuming Real Time Clock module that is suitable for numerous timing clock protocols and applications. Its wide variety of features make it an ideal choice for embedded systems, computer systems, and industrial automation.

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