Renesas Electronics Timers & Real-Time Clocks 542

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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	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	Width	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Total Dose (V)	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
5962R9571301QXC	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	FLAT	24	DFP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	YES	PARALLEL, DIRECT ADDRESS	5.5 V	MIL-PRF-38535 Class Q	16		FLATPACK			4.5 V	125 Cel	-55 Cel	GOLD	DUAL	2.92 mm	12.7 mm	8				15.24 mm	100k Rad(Si)	3	CMOS			5 V		1.27 mm	R-CDFP-F24		Qualified		e4
CDP6818EX	Renesas Electronics		COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL				5	IN-LINE	DIP24,.6	Y		70 Cel	0 Cel		DUAL										CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T24			YES
UPD4991ACX	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	18	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		4	5	IN-LINE	DIP18,.3	Y	2 V	85 Cel	-40 Cel	TIN LEAD	DUAL	5.08 mm	7.62 mm	4	.032 MHz						CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T18		Not Qualified	YES	e0
X1288V14I-2.7	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.2 mm	4.4 mm		.032 MHz			5 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	YES	e0
UPD71054L-10	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		16		CHIP CARRIER			4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	4.6 mm	11.5 mm	8	10 MHz			11.5 mm		3	CMOS			5 V		1.27 mm	S-PQCC-J28				e0
UPD71054GB-3B4	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	GULL WING	44	QFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		16		FLATPACK			4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	3 mm	10 mm	8	8 MHz			10 mm		3	CMOS			5 V		.8 mm	S-PQFP-G44				e0
X1205S8ZT1	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP8,.25	Y	2.7 V	70 Cel	0 Cel	MATTE TIN	DUAL	1.75 mm	3.9 mm		.032 MHz			4.9 mm			CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
X1205S8I	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP8,.25	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm	3.9 mm		.032 MHz			4.9 mm		0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e0
X1205V8T1	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.2 mm	3 mm		.032 MHz			4.4 mm			CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G8	1	Not Qualified	YES	e0
X1288S16I-2.7T1	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP16,.4	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	2.65 mm	7.5 mm		.032 MHz			10.3 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	YES	e0
X1205S8IZ	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP8,.25	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	3.9 mm		.032 MHz			4.9 mm			CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8	5	Not Qualified	YES	e3
1339-31DVGI	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.6/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	2.45 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm	3 mm		.032 MHz	30	260	3 mm		1	CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	R-PDSO-G8	3	Not Qualified	YES	e3
CP82C54-10	Renesas Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	6.35 mm	15.24 mm	8	10 MHz			31 mm		3	CMOS			5 V		2.54 mm	R-PDIP-T24		Not Qualified		e0
1339AC-31SRI	Renesas Electronics	TIMER, REAL TIME CLOCK																														CMOS
1339AC-31SRI8	Renesas Electronics	TIMER, REAL TIME CLOCK																														CMOS
UPD4992GS-T1	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		8		SMALL OUTLINE			2.4 V	85 Cel	-40 Cel		DUAL	1.8 mm	5.6 mm	8	.032 MHz	NOT SPECIFIED	NOT SPECIFIED				CMOS			5 V		1.27 mm	R-PDSO-G20
1339-31DCGI	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.6/5	SMALL OUTLINE	SOP8,.25	Y	3.3 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	3.9 mm		.032 MHz	30	260	4.9 mm		1	CMOS		SECONDS		Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
5962-01-249-6222	Renesas Electronics																															CMOS								Not Qualified
5962R9571301VXC	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	FLAT	24	DFP	RECTANGULAR	CERAMIC, METAL-SEALED COFIRED	YES	PARALLEL, DIRECT ADDRESS	5.5 V		16		FLATPACK			4.5 V	125 Cel	-55 Cel	GOLD	DUAL	2.92 mm	9.905 mm	8	5 MHz					3	CMOS			5 V		1.27 mm	R-CDFP-F24		Qualified		e4
UPD8253C-5	Renesas Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel	Tin/Lead (Sn/Pb)	DUAL			8	5 MHz					3	CMOS			5 V			R-PDIP-T24				e0
1339-2DVGI	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			2.5/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm			.032 MHz	30	260			1	CMOS		SECONDS	3.3 V	Timer or RTC	.65 mm	R-PDSO-G8	3	Not Qualified	YES	e3
X1288S16-4.5A	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			5	SMALL OUTLINE	SOP16,.4	Y	4.5 V	70 Cel	0 Cel	TIN LEAD	DUAL	2.65 mm	7.5 mm		.032 MHz			10.3 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	YES	e0
X1288V14IZ-4.5AT1	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			4.5 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	4.4 mm		.032 MHz			5 mm		1	CMOS			5 V		.65 mm	R-PDSO-G14	5	Not Qualified		e3
1339-2DCGI	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			2.5/5	SMALL OUTLINE	SOP8,.25	Y	2 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.75 mm	3.9 mm		.032 MHz	30	260	4.9 mm		1	CMOS		SECONDS	3.3 V	Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	YES	e3
5962-01-299-5396	Renesas Electronics	TIMER, MEMORY REFRESH																														CMOS							1	Not Qualified
UPD4991AGS-E2-A	Renesas Electronics
X1288S16-2.7	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP16,.4	Y	2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	2.65 mm	7.5 mm		.032 MHz			10.3 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	YES	e0
5P90005DCGI	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			2.5/5	SMALL OUTLINE	SOP8,.25	N	2 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.75 mm	3.9 mm		.032768 MHz	30	260	4.9 mm		1	CMOS	.3 mA	SECONDS		Timer or RTC	1.27 mm	R-PDSO-G8	1	Not Qualified	NO	e3
X1288V14IZ-4.5A	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			4.5 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	4.4 mm		.032 MHz			5 mm		1	CMOS			5 V		.65 mm	R-PDSO-G14	5	Not Qualified		e3
X1288S16I-2.7AT1	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE	SOP16,.4	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	2.65 mm	7.5 mm		.032 MHz			10.3 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	1.27 mm	R-PDSO-G16	1	Not Qualified	YES	e0
UPD4992GS-E2-A	Renesas Electronics
X1288V14Z	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			4.5 V	70 Cel	0 Cel	MATTE TIN	DUAL	1.2 mm	4.4 mm		.032 MHz			5 mm		1	CMOS			5 V		.65 mm	R-PDSO-G14	5	Not Qualified		e3
UPD4992GS-E1-A	Renesas Electronics
UPD71054L	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		16		CHIP CARRIER			4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	4.6 mm	11.5 mm	8	8 MHz			11.5 mm		3	CMOS			5 V		1.27 mm	S-PQCC-J28				e0
UPD4990AG	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 1-WIRE	5.5 V			2/5.5	SMALL OUTLINE	SOP16,.3	N	2 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.8 mm	5.6 mm		.032 MHz						CMOS		SECONDS		Timer or RTC	1.27 mm	R-PDSO-G16		Not Qualified	YES	e0
X1243S8	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V			3/5	SMALL OUTLINE	SOP8,.25	Y	2.7 V	70 Cel	0 Cel	TIN LEAD	DUAL	1.75 mm	3.9 mm	0	.032 MHz			4.9 mm		0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8		Not Qualified	YES	e0
UPD71054GB-10-3B4	Renesas Electronics	TIMER, PROGRAMMABLE	INDUSTRIAL	GULL WING	44	QFP	SQUARE	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		16		FLATPACK			4.5 V	85 Cel	-40 Cel	TIN LEAD	QUAD	3 mm	10 mm	8	10 MHz			10 mm		3	CMOS			5 V		.8 mm	S-PQFP-G44				e0
X1205V8ZT1	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	2.7 V	70 Cel	0 Cel	MATTE TIN	DUAL	1.2 mm	3 mm		.032 MHz			4.4 mm			CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G8	3	Not Qualified	YES	e3
UPD4992CX	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	THROUGH-HOLE	20	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		8	3/5	IN-LINE	DIP20,.3	N	2.4 V	85 Cel	-40 Cel	TIN LEAD	DUAL	5.08 mm	7.62 mm	8	.032 MHz						CMOS		SECONDS	5 V	Timer or RTC	2.54 mm	R-PDIP-T20		Not Qualified	YES	e0
84065013X	Renesas Electronics	TIMER, PROGRAMMABLE	MILITARY	NO LEAD	28	QCCN	SQUARE	CERAMIC, METAL-SEALED COFIRED	YES	PARALLEL, DIRECT ADDRESS	5.5 V	MIL-STD-883 Class B			CHIP CARRIER			4.5 V	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	QUAD			8	8 MHz					3	CMOS			5 V			S-CQCC-N28		Qualified		e0
1339-31DVGI8	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3.6/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.19	Y	2.45 V	85 Cel	-40 Cel	Matte Tin (Sn) - annealed	DUAL	1.1 mm	3 mm		.032 MHz	30	260	3 mm		1	CMOS	.45 mA	SECONDS	3.3 V	Timer or RTC	.65 mm	R-PDSO-G8	3	Not Qualified	YES	e3
UPD8253C-2	Renesas Electronics	TIMER, PROGRAMMABLE	COMMERCIAL	THROUGH-HOLE	24	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	PARALLEL, DIRECT ADDRESS	5.5 V		16		IN-LINE			4.5 V	70 Cel	0 Cel	Tin/Lead (Sn/Pb)	DUAL			8	4 MHz					3	CMOS			5 V			R-PDIP-T24				e0
X1243S8I	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2-WIRE/I2C	5.5 V			3/5	SMALL OUTLINE	SOP8,.25	Y	2.7 V	85 Cel	-40 Cel	TIN LEAD	DUAL	1.75 mm	3.9 mm	0	.032 MHz			4.9 mm		0	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G8		Not Qualified	YES	e0
X1288V14IZ-2.7A	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	14	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP14,.25	Y	2.7 V	85 Cel	-40 Cel	MATTE TIN	DUAL	1.2 mm	4.4 mm		.032 MHz			5 mm		1	CMOS		1/100 SECOND	5 V	Timer or RTC	.65 mm	R-PDSO-G14	1	Not Qualified	YES	e3
5P90011CPGG	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	20	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 3-WIRE	5.5 V				SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	Y	2 V	70 Cel	0 Cel		DUAL	1.2 mm	4.4 mm		2 MHz			6.5 mm			CMOS	1.28 mA	SECONDS	5 V		.65 mm	R-PDSO-G20			NO
X1205V8Z	Renesas Electronics	TIMER, REAL TIME CLOCK	COMMERCIAL	GULL WING	8	TSSOP	RECTANGULAR	PLASTIC/EPOXY	YES	I2C	5.5 V			3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP8,.25	Y	2.7 V	70 Cel	0 Cel	MATTE TIN	DUAL	1.2 mm	3 mm		.032 MHz			4.4 mm			CMOS		SECONDS	5 V	Timer or RTC	.65 mm	R-PDSO-G8		Not Qualified	YES	e3
SL12027IB27Z-T	Renesas Electronics		INDUSTRIAL	GULL WING	8	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	SERIAL, 2 WIRE/I2C				3/5	SMALL OUTLINE	SOP8,.25	Y		85 Cel	-40 Cel		DUAL												SECONDS		Timer or RTC	1.27 mm	R-PDSO-G8		Not Qualified	NO
UPD4991AGS-A	Renesas Electronics	TIMER, REAL TIME CLOCK	INDUSTRIAL	GULL WING	20	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	PARALLEL, DIRECT ADDRESS	5.5 V		1	5	SMALL OUTLINE	SOP20,.3	Y	2 V	85 Cel	-40 Cel	TIN BISMUTH	DUAL	1.8 mm	5.6 mm	4	.032 MHz	10	260	12.7 mm		1	CMOS		SECONDS	5 V	Timer or RTC	1.27 mm	R-PDSO-G20		Not Qualified	YES	e6

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.