Microchip Technology Timers & Real-Time Clocks 81

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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	On Chip Data RAM Width	Screening Level	No. of Bits	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	RAM Words	Width	Additional Features	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	No. of Timers	Technology	Maximum Supply Current	Minimum Time	Nominal Supply Voltage	Sub-Category	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Volatile	JESD-609 Code
MCP7940NT-E/MSVAO	Microchip Technology	TIMER, REAL TIME CLOCK		GULL WING	8	TSSOP	SQUARE	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	1.8 V	125 Cel	-40 Cel		DUAL	1.1 mm	64	3 mm		.032768 MHz			3 mm	1	CMOS		SECONDS	2.5 V		.65 mm	S-PDSO-G8			NO
MCP79510T-I/MN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.12,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	.8 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz			3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-N10			NO	e3
MCP7940MT-I/SNVAO	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100; TS 16949			SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.75 mm	64	3.9 mm		.032 MHz			4.9 mm	1	CMOS	.4 mA	SECONDS	2.5 V		1.27 mm	R-PDSO-G8			YES
MCP79412-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	.032 MHz			4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs	.65 mm	R-PDSO-G8		Not Qualified	NO	e3
MCP795W20-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP795W10-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP795W10-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	5.5 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz			5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14		Not Qualified	NO	e3
MCP79520-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	2		NO	e3
MCP79520-I/MSVAO	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	AEC-Q100; TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz			3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10			NO
MCP79512-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	2		NO	e3
MCP795W12-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP795W11-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP79520T-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	2		NO	e3
MCP7940M-I/SNVAO	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100; TS 16949			SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.75 mm	64	3.9 mm		.032 MHz			4.9 mm	1	CMOS	.4 mA	SECONDS	2.5 V		1.27 mm	R-PDSO-G8			YES
MCP795W11-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP795W12-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP795W21-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP79402T-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm		.032 MHz			4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	R-PDSO-G8		Not Qualified	NO	e3
MCP79410-I/MNY	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	8	HVSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC8,.11,20	Y	1.8 V	85 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	.8 mm	64	2 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	.032 MHz	40	260	3 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs	.5 mm	R-PDSO-N8	1	Not Qualified	NO	e4
MCP795W20-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	5.5 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz			8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14		Not Qualified	NO	e3
MCP795W21-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	5.5 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz			8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14		Not Qualified	NO	e3
MCP79521T-I/MN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	NO LEAD	10	HVSON	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.12,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	.8 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz			3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-N10			NO	e3
MCP795W12-I/SLVAO	Microchip Technology	TIMER, REAL TIME CLOCK		GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	AEC-Q100; TS 16949			SMALL OUTLINE	SOP14,.25	Y	1.8 V	85 Cel	-40 Cel		DUAL	1.75 mm	64	3.9 mm		.032768 MHz			8.65 mm	1	CMOS		1/100 SECOND	3 V		1.27 mm	R-PDSO-G14			NO
MCP79410T-I/MNYVAO	Microchip Technology	TIMER, REAL TIME CLOCK		NO LEAD	8	HVSON	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100; TS 16949			SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC8,.12,20	Y	1.8 V	85 Cel	-40 Cel		DUAL	.8 mm	64	2 mm		.032768 MHz			3 mm	1	CMOS		SECONDS	2.5 V		.5 mm	R-PDSO-N8			NO
MCP79512T-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	1		NO	e3
MCP79522-I/MS	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	10	TSSOP	SQUARE	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949			SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.1 mm	64	3 mm	ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ	.032 MHz	40	260	3 mm	1	CMOS	5 mA	1/100 SECOND	3 V		.5 mm	S-PDSO-G10	2		NO	e3
MCP795W22-I/SL	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	3.6 V	8	TS 16949	8	2/5	SMALL OUTLINE	SOP14,.24	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz	40	260	8.65 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	1.27 mm	R-PDSO-G14	1	Not Qualified	NO	e3
MCP79401T-I/SN	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE	SOP8,.23	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	64	3.9 mm		.032 MHz	30	260	4.9 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MCP79411T-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	.032 MHz	40	260	4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timers or RTCs	.65 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MCP795W22-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL(SPI)	5.5 V	8	TS 16949	8	2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	4.4 mm	ALSO OPEARTES AT 1.8 V MINIMUM SUPPLY AT 3 MHZ	.032 MHz			5 mm	1	CMOS	5 mA	1/100 SECOND	3 V	Timer or RTC	.65 mm	R-PDSO-G14		Not Qualified	NO	e3
MCP79401-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm		.032 MHz	40	260	4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	R-PDSO-G8	1	Not Qualified	NO	e3
MCP79402-I/ST	Microchip Technology	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	TS 16949		2/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	1.8 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	64	3 mm		.032 MHz			4.4 mm	1	CMOS	3 mA	SECONDS	2.5 V	Timer or RTC	.65 mm	R-PDSO-G8		Not Qualified	NO	e3
MCP7940N-E/SNVAO	Microchip Technology	TIMER, REAL TIME CLOCK	AUTOMOTIVE	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V	8	AEC-Q100; TS 16949			SMALL OUTLINE	SOP8,.23	Y	1.8 V	125 Cel	-40 Cel		DUAL	1.75 mm	64	3.9 mm		.032 MHz			4.9 mm	1	CMOS	.4 mA	SECONDS	2.5 V		1.27 mm	R-PDSO-G8			YES

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.