BQ4845S-A4NTRG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Real time clocks (RTCs) are computer hardware devices that keep track of time, even when the computer power is turned off or disrupted. The most popular type of RTC is the BQ4845S-A4NTRG4, an eight-pin device in an SO-8 package. It is manufactured by NXP, and is available from a range of distributors, from RS Components to Mouser and Digi-Key. It is a reliable, low-power clock-calendar device, providing a wide variety of input and output options. The BQ4845S-A4NTRG4’s application field is vast, and it is used in embedded systems, automotive body electronics, household appliances, and industrial control equipment.

The BQ4845S-A4NTRG4 real time clock is made up of several components, including a 32 kHz crystal oscillator, microcontroller, LDO regulator, and an I2C-bus dedicated microcontroller interface. The voltage supply range is from 1.2V to 3.6V.

The timekeeping device that the BQ4845S-A4NTRG4 provides is as accurate as it gets. It has a programmable oscillator with a clock accuracy over the supply voltage range of up to ±2 ppm. It also features built-in temperature compensation and a ±50 ppm accuracy over the -40°C to +85°C operating temperature range.

The BQ4845S-A4NTRG4 supports both the I²C-bus and SMBus real time clock protocols. It also provides an interrupt output pin, which is used to signal an event such as a momentary power loss or other type of anomaly. This clock also has a timed-wakeup mode, which is used to wake up the system at pre-set intervals to perform other important tasks, as well as an alarm function that can be used to provide a timely alert.

The BQ4845S-A4NTRG4 also includes a 64-byte SRAM (static random access memory) and 32-bit monotonic counter, which keeps track of the number of seconds that have elapsed since the device has been powered on. This feature can be used to accurately measure time intervals, track network uptime, or measure processing times with an accuracy of within ±1 second.

In addition to its timekeeping feature, the BQ4845S-A4NTRG4 also supports an intelligent power-saving mode that allows it to minimize power consumption. When the device is not in use, it can automatically enter a power saving mode, reducing the operating current from 6 µA to 37 µA. This is important for battery-operated systems where even small amounts of power can make a big difference.

The BQ4845S-A4NTRG4 is a versatile and highly reliable real time clock, and is used in a wide variety of applications. Its low power consumption, high accuracy, and ease of use make it an ideal solution for embedded systems, automotive body electronics, household appliances, and all other types of applications that require accurate, reliable timekeeping.

The specific data is subject to PDF, and the above content is for reference