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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...

96-Byte, Battery-Backed NV RAM for Data Storage
Time-of-Day Alarms, Programmable on Combination of Seconds, Minutes, Hours, and Day of the Week
Burst Mode for Reading/Writing Successive Addresses
Dual-Power Supply Pins for Primary and Backup Power
Optional Trickle Charge Output to Backup Supply

Data Sheets
QV	PDF	MAX6917: I²C-Compatible RTC with Microprocessor Supervisor, Alarm, and NV RAM Controller
QV	PDF	DS1388: I²C RTC/Supervisor with Trickle Charger and 512 Bytes EEPROM
QV	PDF	DS3231: Extremely Accurate I²C-Integrated RTC/TCXO/Crystal
QV	PDF	DS1305: Serial Alarm Real-Time Clock

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