Real Time Clocks

EM's family of low power CMOS Real Time Clocks (RTC) have been designed to provide an accurate reference of time in electronic products.

Ultra low current consumption in the 1mA-range allows these circuits to be powered by a small lithium cell for more than 10 years, longer than the useful life of most equipment. This is ideal to be used in handheld and portable end-products.

The wide operating temperature range of these ICs make them also ideal for use in automotive and industrial applications.

Finally, these RTCs can be used with a great flexibility since they come with different features: built-in or external quartz oscillator, user RAM, integrated battery switchover, 1-bit or bytewide interface and programmable interrupts.

	Part #	Description	Document
	V3020	Ultra Low Power 1-Bit 32kHz RTC, 0.4uA standby current, up to +125°C.	DataSheet
	V3021	Ultra Low Power 1-Bit 32kHz RTC, 0.8uA standby current, up to +125°C	DataSheet
	V3022	Very Low Power 8-Bit 32kHz RTC Module (with built-in quartz crystal) with Digital Trimming	DataSheet
	V3023	Very Low Power 8-Bit 32kHz RTC Module (with built-in quartz crystal) with Digital Trimming and User RAM	DataSheet
	V3025	Very Low Power 8-Bit 32kHz RTC Module (with built-in quartz crystal) with Digital Trimming, User RAM and Battery Switch-over	DataSheet
	EM3027	Real-Time Clock with I2C or SPI Interface, Crystal Temperature Compensation, Battery Switchover and Trickle Charger	FactSheet Datasheet