22 Timers & Real-Time Clocks 10

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Part	Manufacturer	Peripheral IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	Information Access Method	Maximum Supply Voltage	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Interrupt Capability	Minimum Supply Voltage	Maximum Operating Temperature	Minimum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	Width	Additional Features	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	No. of Timers	Technology	Minimum Time	Nominal Supply Voltage	Sub-Category	Terminal Pitch	JESD-30 Code	Qualification	Volatile	JESD-609 Code
RX-8581NB:B3:PURESN	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel	TIN	DUAL	1.4 mm	4.8 mm	LG-MAX	.032 MHz		260	6.3 mm		CMOS	SECONDS	2.7 V	Timer or RTC	.5 mm	R-PDSO-N22	Not Qualified	YES	e3
RX-8581NB:B3	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm	LG-MAX	.032 MHz			6.3 mm		CMOS	SECONDS	2.7 V	Timer or RTC	.5 mm	R-PDSO-N22	Not Qualified	YES
RX-8581NBB-3	Epson Toyocom	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V		SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN/TIN SILVER	DUAL	1.4 mm	4.8 mm			NOT SPECIFIED	NOT SPECIFIED			CMOS		3 V		.5 mm	R-PDSO-N22	Not Qualified		e3/e2
RX-8581NB:B0	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm	LG-MAX	.032 MHz			6.3 mm		CMOS	SECONDS	2.7 V	Timer or RTC	.5 mm	R-PDSO-N22	Not Qualified	YES
RX-8581NBB-0	Epson Toyocom	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V		SMALL OUTLINE			1.8 V	85 Cel	-40 Cel	TIN/TIN SILVER	DUAL	1.4 mm	4.8 mm			NOT SPECIFIED	NOT SPECIFIED			CMOS		3 V		.5 mm	R-PDSO-N22	Not Qualified		e3/e2
RX-8581NB	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V		SMALL OUTLINE			1.8 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm		.032 MHz				0	CMOS		3 V		.5 mm	R-PDSO-N22	Not Qualified
RX-8581NB:B:PURESN	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel	TIN	DUAL	1.4 mm	4.8 mm	LG-MAX	.032 MHz		260	6.3 mm		CMOS	SECONDS	2.7 V	Timer or RTC	.5 mm	R-PDSO-N22	Not Qualified	YES	e3
RX-8581NB:B	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	2/5	SMALL OUTLINE	SOLCC22,.2,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm	LG-MAX	.032 MHz	NOT SPECIFIED	NOT SPECIFIED	6.3 mm		CMOS	SECONDS	2.7 V	Timer or RTC	.5 mm	R-PDSO-N22	Not Qualified	YES
RX-4045NB:AA3	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V		SMALL OUTLINE			1.7 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm	LG-MAX		NOT SPECIFIED	NOT SPECIFIED	6.3 mm		CMOS		3 V		.5 mm	R-PDSO-N22
RX-4045NB:AA3:PURESN	Seiko Epson	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	22	SON	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 4-WIRE/SPI	5.5 V		SMALL OUTLINE			1.7 V	85 Cel	-40 Cel		DUAL	1.4 mm	4.8 mm	LG-MAX			260	6.3 mm		CMOS		3 V		.5 mm	R-PDSO-N22

Timers & Real-Time Clocks

Timers and real-time clocks (RTCs) are electronic devices that are used to measure and track time intervals in electronic systems. They are crucial components in many applications, such as control systems, automation systems, and consumer electronics.

A timer is an electronic device that is used to measure the duration of time intervals. Timers can be either digital or analog and can be used to measure time intervals ranging from microseconds to hours or even days. They can be used for a variety of applications, such as controlling the duration of a signal or triggering an event after a specified time interval.

A real-time clock (RTC) is a clock that keeps track of the current time and date. Unlike a timer, an RTC is capable of keeping track of time even when the system is powered off. RTCs are commonly used in consumer electronics such as watches, clocks, and digital cameras, as well as in control systems, data loggers, and other applications that require accurate timekeeping.