DS1670S

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In the world today, technology is advancing at an incredible rate and one of the technologies that is integral to many applications is a Real Time Clock (RTC). A Real Time Clock, or RTC, is an integrated circuit that keeps track of time based on an input clock signal. The DS1670S is a Real Time Clock (RTC) IC with integrated security features offered by Maxim Integrated. This Real Time Clock with Security features, or RTCS, is ideal for applications that require secure time keeping. The DS1670S Real Time Clock IC’s application fields are multifarious. It is perfect for single-chip solutions when the time needs to be kept securely from wide application range, from simple clocks, to timekeeping for disparate systems such as HVAC, vehicle tracking, authentication and access control, industrial and medical instrumentation, and other smart systems such as mobile and electronic government. The DS1670S Real Time Clock IC is a secure RTC solutions with a unique ID, as well as a one-time programmable (OTP) memory area that is used to store and secure authentication data. The built-in secure authentication protocol uses the ID, stored authentication data, and a time stamp stored in the integrated register to authenticate the system. The security protocol supports DES, Triple DES and SHA-1 algorithms. These features, combined with the digital temperature sensor, infrared (IR) wake-up timer and advanced battery switching combinations, make it a robust secure real-time clock solution with an integrated security function. In terms of working principle, the DS1670S Real Time Clock IC uses the clock signal input from a 32.768 kHz crystal oscillator. The IC uses the signal from the oscillator to drive the timekeeping core logic. This core logic delivers Real Time values, readings from the digital thermometer, alarms, time-stamp and security data. The data is automatically stored in an integrated register that is accessible via two-wire serial channel, via an I2C-compatible serial port. This serial port allows the DS1670S Real Time Clock IC to interface with a variety of host processors that require secure performance. Furthermore, the DS1670S Real Time Clock IC’s hardware-level elements provide the necessary features for complete power management. It features a high accuracy programmable low power oscillator, low power wake-up timer, alarms and low power drain mode. This provides the capability to manage power usage in all applications, from high-end multi-core devices, to low-power single-core processors. In conclusion, the DS1670S Real Time Clock IC provides a comprehensive Real Time Clock solution for secure timekeeping and low power operation in all applications. The integrated security features and the various built-in power management options make this IC a perfect solution for secure timekeeping in a wide range of applications.

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