Real Time Clocks for Thermostats

Real Time Clocks (RTCs) are IC devices that keep track of time. A typical RTC can provide the time of day as well as the date via a serial bus such as I2C or SPI

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Results: 11
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Description Datasheet Availability Pricing (DKK) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Interface Type
Date Format
Time Format
Package/Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Series
Mounting Style
Time Keeping Current
Packaging
Microchip Technology Real Time Clock I2C GP RTCC 64B SRAM
Datasheet
1.974In Stock
5,77 kr.
5,33 kr.
Min.: 1
Mult.: 1
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) MSOP-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube

NXP Semiconductors Real Time Clock RTC IC with 400 kHz I2C interface in TSSOP8 package.
Datasheet
15.120In Stock
Cut Tape
11,71 kr.
8,58 kr.
7,83 kr.
7,06 kr.
Reel
5,89 kr.
View
MouseReel Available
Min.: 1
Mult.: 1
: 2.500
I2C YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-8 No Backup Switching 1 V 5.5 V - 40 C + 85 C PCF8563 SMD/SMT Reel, Cut Tape, MouseReel
Microchip Technology Real Time Clock I2C GP RTCC 64B SRAM
Datasheet
564In Stock
5,77 kr.
5,33 kr.
Min.: 1
Mult.: 1
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID
Datasheet
1.067In Stock
2.500Expected 25/01/2027
6,93 kr.
6,48 kr.
6,42 kr.
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) MSOP-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube
Microchip Technology Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID
Datasheet
264In Stock
800Expected 05/02/2027
6,93 kr.
6,48 kr.
6,42 kr.
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) TSSOP-8 Backup Switching 1.8 V 5.5 V - 40 C + 85 C SMD/SMT 1.2 uA Tube
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
771In Stock
45,13 kr.
34,61 kr.
29,39 kr.
29,09 kr.
View
Min.: 1
Mult.: 1
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1339U SMD/SMT 200 uA Tube
Analog Devices / Maxim Integrated Real Time Clock I C Serial Real-Time Clock
Datasheet
297In Stock
32,23 kr.
24,32 kr.
22,23 kr.
20,07 kr.
View
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 No Backup Switching 1.8 V 5.5 V - 40 C + 85 C DS1337U SMD/SMT 425 nA Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with 56-Byte NV RAM
Datasheet
70In Stock
39,99 kr.
32,67 kr.
27,75 kr.
27,38 kr.
View
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) uSOP-8 Backup Switching 3 V 5.5 V - 40 C + 85 C DS1338U SMD/SMT 85 uA Tube
Analog Devices / Maxim Integrated Real Time Clock I C RTC with Trickle Charger
Datasheet
13In Stock
42,60 kr.
32,67 kr.
29,91 kr.
27,38 kr.
View
Min.: 1
Mult.: 1
I2C YY-MM-DD-dd HH:MM:SS (24 hr) uSOP-8 Backup Switching 2.97 V 5.5 V - 40 C + 85 C DS1340U SMD/SMT 100 uA Tube

STMicroelectronics Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc
Datasheet
2.190On Order
Cut Tape
50,21 kr.
38,79 kr.
35,96 kr.
32,53 kr.
30,51 kr.
Reel
29,39 kr.
MouseReel Available
Min.: 1
Mult.: 1
: 1.350
Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SSOP-20 Backup Switching 2.7 V 3.6 V - 40 C + 85 C M41ST87W SMD/SMT 500 uA Reel, Cut Tape, MouseReel
Texas Instruments Real Time Clock Parallel RTC A 595-B Q4802LYPWR A 595-BQ A 595-BQ4802LYPWR
Datasheet
199Expected 25/11/2026
73,63 kr.
57,52 kr.
53,41 kr.
48,94 kr.
42,97 kr.
Min.: 1
Mult.: 1
Parallel YY-MM-DD-dd HH:MM:SS (24 hr) TSSOP-28 Backup Switching 2.7 V 3.6 V 0 C + 70 C BQ4802LY SMD/SMT 3 mA Tube