DS1251WP-120+C02

Interface:	Parallel
Base Part Number:	DS1251
Supplier Device Package:	34-PowerCap Module
Package / Case:	34-PowerCap™ Module
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Current - Timekeeping (Max):	7mA @ 3.3V
Voltage - Supply, Battery:	3V
Voltage - Supply:	2.97 V ~ 3.63 V
Series:	--
Date Format:	YY-MM-DD-dd
Time Format:	HH:MM:SS:hh (12/24 hr)
Memory Size:	512KB
Features:	Leap Year, NVSRAM
Type:	Phantom Time Chip
Part Status:	Active
Packaging:	Tube

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Introduction DS1251WP-120+C02 is a real-time clock that is used in applications where time and date information are required. The DS1251WP-120+C02 is an extremely accurate, low power real-time clock/calendar with an extra-wide temperature range for noise-immune operation. It features enhanced accuracy, allowing for an average frequency offset greater than 4Hz over the -40°C to +85°C temperature range for temperatures between -40°C and +85°C. The module has an integrated power-on reset circuit and a power failure detect circuit and includes a user-programmable alarm. Application Field DS1251WP-120+C02 is used in various applications that require accurate time and date information. Some of the most common applications include measurement and testing systems, telecommunications, process automation, and data logging/collection. It is also used in applications such as automotive, industrial, medical and military systems. The DS1251WP-120+C02 is specifically designed for use in automotive, industrial and medical applications, where reliability and accuracy are of utmost importance. It offers robust design, low power consumption, and excellent thermal stability. Working Principle The DS1251WP-120+C02 incorporates a high-performance oscillator, which is based on the Temperature Compensated Crystal Oscillator (TCXO) technology. It is designed to effectively maintain the accuracy of the clock over a wide temperature range. The clock is designed to run at 32.768 kHz, with internal circuitry that controls the clock display, alarm, and back-up battery operation. The clock mechanism is responsible for keeping track of time and date by counting the number of seconds that have passed since the time of the last reset. It also uses a frequency-locked loop (FLL) to compensate for any changes in the oscillator frequency due to temperature changes. The clock also includes a real-time clock/calendar, which allows the device to keep track of the time and date in order to display the current time and date. The clock/calendar includes a user-programmable alarm, which can be used to generate an interrupt signal to wake up the system from a low power mode. The device also includes an integrated power-on reset circuit, which ensures that the system is always started in a known state and a power failure detect circuit, which allows the device to be put into a low power mode in order to save battery power during periods of power loss. Conclusion The DS1251WP-120+C02 is a low power, high precision real-time clock/calendar with a wide temperature range. It is designed to provide reliable time and date information in automotive, industrial and medical applications where accuracy and reliability are essential. The device includes a built-in oscillator to ensure accuracy, a user-programmable alarm, and power-on reset and power failure detect circuitry to keep system operations running smoothly.

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