XL41T56 SOP8 low-power, serial real-time clock

PublishTime：2021-05-19

The XL41T56 is a low-power, serial real-time clock (RTC) with 56 bytes of NVRAM. A built-in 32,768 Hz oscillator (external crystal controlled) and the first 8 bytes of the RAM are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two-line, bidirectional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.
The XL41T56 clock has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell.
Typical data retention time is in excess of 10 years with a 50 mAh, 3 V lithium cell.
●Features:
■ Counters for seconds, minutes, hours, day, date, month, years, and century
■ 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
■ Serial interface supports l²C bus (100 kHz protocol)
■ Ultra-low battery supply current of 450 nA (typ at 3 V)
■ 5 V ±10% supply voltage
■ Timekeeping down to 2.5 V
■ Automatic power-fail detect and switch circuitry
■ 56 bytes of general purpose RAM
■ Software clock calibration to compensate crystal deviation due to temperature
■ Automatic leap year compensation
■ Operating temperature of -40 °C to 85 °C
■ RoHS compliant
▲ Lead-free second level interconnect

Brand of Product：	XINLUDA
Part#：	XL41T56 More Part#
Product Category：	low-power, serial real-time clock More
Application：	More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	SOP8
Language：	English Chinese Chinese and English Japanese
Date of Creation：
Version Number：
Data Encoding：
Data Size：	1.2 MB

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