BQ3285LFSS-A1

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Clock/Calendar
Features:	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
Memory Size:	242B
Time Format:	HH:MM:SS (12/24 hr)
Date Format:	YY-MM-DD-dd
Interface:	Parallel
Voltage - Supply:	2.7 V ~ 5.5 V
Voltage - Supply, Battery:	2.4 V ~ 4 V
Current - Timekeeping (Max):	100µA @ 3V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	24-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	24-SSOP/QSOP
Base Part Number:	BQ3285

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Introduction to BQ3285LFSS-A1

BQ3285LFSS-A1 is a real time clock IC (integrated circuit) designed for use in clocks and timer applications. The clock is accurate to within 20 ppm, or ±3 mHz, making it suitable for time critical applications such as clocks and digital watches. It uses an internal quartz crystal for accuracy and features an extremely low power consumption, with typical standby current of 5 µA, making it suitable for battery powered applications. Additionally, the clock is available in both CMOS and LVCMOS versions, making it a versatile choice for both low and high voltage circuit designs.

Applications of BQ3285LFSS-A1

BQ3285LFSS-A1 is a versatile real time clock IC, with a range of applications in analogue and digital amounting systems. It can be used in a variety of timekeeping applications, such as clocks, timers, digital watches, and automotive electronics. It is also suitable for more advanced applications such as monitoring systems, data acquisition systems, and industrial automation. Additionally, it is suitable for use in automotive systems, due to its low power consumption and wide operating temperature range.

Working Principle of BQ3285LFSS-A1

The BQ3285LFSS-A1 is a highly accurate real time clock IC. It uses an internal quartz crystal oscillator to maintain its frequency accuracy. The quartz crystal provides both stability and accuracy over a wide range of environmental conditions, including temperature and voltage fluctuations. Additionally, the clock is extremely power efficient, with typical standby current of 5uA and active current of 5mA.In operation, the clock is divided into 7 main registers. The registers are used to store time and date information and also direct the clock’s operation. The registers are automatically updated by the clock IC and can be accessed by external devices as required. The time is stored in 24-hour format and the date is stored in binary coded decimal format. All parameters can be adjusted by external devices, allowing the clock to be synchronized with external sources if required.

Conclusion

The BQ3285LFSS-A1 is a highly accurate and versatile real time clock IC suitable for a range of applications. It uses an internal quartz crystal for accuracy and features an extremely low power consumption, making it suitable for battery powered applications. Additionally, the clock is available in both CMOS and LVCMOS versions, making it a versatile choice for both low and high voltage circuit designs.

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