MCP7940N-I/SN

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MCP7940N-I/SN, an electronic component manufactured by MicroChip Technology, is a performing and reliable real-time clock (RTC). It is one of the most popular and widely used devices in many products.

As the name suggests, a real-time clock is a timekeeping device that constantly keeps track of time and provides accurate time information whenever required. The MCP7940N-I/SN is designed to be a low power and high accuracy real-time clock. It features a 9–40V supply voltage range and ultra-low power consumption, with a standby power consumption of only 2 µA.

MCP7940N-I/SN can be used in multiple applications and industries, most commonly being in computing, networking and communication systems. It is mainly used in embedded systems. It is extensively used in the industrial field and is perfect for applications such as supervisory control & data acquisition (SCADA), process control, and other data logging and time-stamping operations.

MCP7940N-I/SN comes with integrated non-volatile memory, which makes it perfect for storage of application specific data and clock settings. This memory is accessed through an I2C communication interface, making it a user-friendly and reliable device for various applications.

The working principle of MCP7940N-I/SN RTC is fairly simple. It consists of quartz oscillator, oscillation circuit, stages, counter and logic circuits. The quartz oscillator is connected to the oscillation circuit. The oscillation circuit produces waves at regular intervals, which is then applied to the stages, the counter which increases with each passing wave and the logic circuits which are responsible for controlling the voltage level to ensure the correct operation of the RTC.

The logic circuits in the RTC read the clock information from the counter and convert this into a digital format such as binary-coded decimal (BCD) or a time format such as MM:SS:HH. The output of the RTC is then sent to the I2C interface which can be used to set the time and read out the current time.

The MCP7940N-I/SN is an ideal device for accurate timekeeping applications. It is reliable, user-friendly and offers an extended temperature range, making it suitable for many applications and industries. With its low power consumption, it is perfect for battery-powered reliance and embedded systems.

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