BQ4845YS-A4NTR

Introduction: BQ4845YS-A4NTR is a highly integrated Real Time Clock (RTC) IC designed with power saving and low power consumption in mind. It enables battery-free operation in computer systems and supports aggressive low power modes for versatile application fields.

Application Field:

The BQ4845YS-A4NTR is ideally suited for any application that requires accurate timekeeping and alarm functions. The configuration of the BQ4845YS-A4NTR allows it to be connected to a variety of systems, including microcontrollers and embedded systems. Moreover, it is also suitable for handheld devices, smartphones, wearables, and other consumer-type products.

Due to its low power consumption and excellent accuracy, the BQ4845YS-A4NTR is particularly well-suited for cost-sensitive applications, such as smart meters, automotive, environment monitoring, and industrial control systems.

Working Principle:

The BQ4845YS-A4NTR is a highly integrated RTC chip that has an internal quartz oscillator and power management circuitry. It has an integrated oscillator buffer and temperature-compensated oscillator that enables the device to maintain accuracy to within 1 minute per year with a full power adjust range (4ppm) over the full temperature range (-40°C to 85°C).

The BQ4845YS-A4NTR also supports data retention, with the internal SRAM having the ability to retain data for over a year with no external power supply. The device is also capable of providing an interrupt (alarm) notification, via a dedicated GPIO pin, or over the I2C bus at a pre-defined time interval.

The BQ4845YS-A4NTR also has integrated power management circuitry that allows it to operate from a variety of power sources. The device can operate from a range of voltage levels from 1.8V to 5.5V, and from a variety of sources such as ac-dc, dc-dc and battery-powered systems. The power management features enable low-power operation, providing energy savings over other RTC devices.

Conclusion:

The BQ4845YS-A4NTR is a highly integrated Real Time Clock IC that provides low power operation, high accuracy and data retention, making it an ideal choice for a variety of cost-sensitive applications. With its integrated power management and accuracy, this device is the perfect choice for any system that requires accurate timekeeping, whether it be an embedded system or handheld device.