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Maxim RTC Technology

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DS3231 Receives EDN China 2005 Innovation Award

Utility Meters

If it's electronic, it needs a clock...
Commonly-Used Features
Nonvolatile Memory for Data Storage Periodic Interrupt Watchdog timer Power-Fail Output Accurate Timekeeping for Multirate Meters

Recommended RTCs for Utility Meters

DS1372: I²C, 32-Bit, Binary Counter Clock with 64-Bit ID
DS32B35, DS32C35: Accurate I²C RTC with Integrated TCXO/Crystal/FRAM
DS3231: Extremely Accurate I²C-Integrated RTC/TCXO/Crystal
DS1390, DS1391, DS1392, DS1393, DS1394: Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1374, DS1374C, DS1374U: I²C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output

Application Notes

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Real-Time Clocks

	Real-Time Clocks (86)
		Parallel Address (52)
			Mux Bus (16)
			Bytewide (35)
			Phantom (12)
		Serial Address (31)
			I²C (18)
			3-Wire (9)
			SPI™ (6)
		1-Wire® (1)

	ALSO SEE: Clock Generation and Distribution