Real-Time Clock (RTC) Modules

Micro Crystal Real-Time Clock (RTC) Modules combine a 32.768kHz tuning fork crystal resonator with a CMOS-based oscillator and an RTC IC housed in a miniature SMD ceramic package. The RTC modules offer high accuracy, temperature compensation, and low current consumption. These cost-effective Micro Crystal modules have an extended operating temperature and are AEC-Q200 qualified. Applications include the Internet of Things (IoT), smart metering, energy harvesting solutions, battery management systems, automotive, industrial, computing, embedded systems, wearables, healthcare, and more.

Results: 17
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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model RTC Bus Interface
Date Format
Time Format
RTC Memory Size
Package/Case
Battery Backup Switching
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Series
Mounting Style
Packaging
Micro Crystal Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.6 AEC-Q200
Datasheet
1,445In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B SON-8 Backup Switching 1.1 V 5.5 V - 40 C + 85 C RV-3028-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 6ppm
Datasheet
1,302In Stock
5,000Expected 2026/09/18
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 85 C RV-3129 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI Time Acc. 6ppm
Datasheet
439In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 85 C RV-3149 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.6mm
Datasheet
954In Stock
1,000Expected 2026/09/25
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B SON-8 Backup Switching 1.1 V 5.5 V - 40 C + 85 C RV-3028-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 1ppm
Datasheet
4,480In Stock
111,000Expected 2026/08/24
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B Backup Switching 1.2 V 5.5 V - 40 C + 85 C RV-3028 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI Time Acc. 25ppm
Datasheet
737In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 85 C RV-3149 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 6ppm AEC
Datasheet
4,717In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 125 C RV-3129 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 25ppm
Datasheet
1,535In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 85 C RV-3129 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 25ppm AEC
Datasheet
2,975In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 125 C RV-3129 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI Time Acc. 25ppm AEC
Datasheet
1,489In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 125 C RV-3149 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus
Datasheet
675In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SON-8 900 mV 5.5 V - 40 C + 85 C RV-8063-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI 20ppm 2.0x1.2x0.7 AEC-Q200
Datasheet
960In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 3-Wire, SPI YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) SON-8 900 mV 5.5 V - 40 C + 85 C RV-8063-C8 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C
Datasheet
4,557In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1 V 4.4 V - 40 C + 85 C RV-4162-C7 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz SPI Time Acc. 6ppm AEC
Datasheet
1,149In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SPI YY-MM-DD-dd HH:MM:SS (24 hr) 8 B Backup Switching 1.3 V 5.5 V - 40 C + 125 C RV-3149 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
Datasheet
51,353Expected 2026/08/14
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial 2-Wire, I2C YY-MM-DD-dd HH:MM:SS:hh (12 hr, 24 hr) No Backup Switching 1.5 V 5.5 V - 40 C + 85 C RV-8803-C7 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768 kHz +/-20 PPM SPI -40/+85C
Datasheet
1,611In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Serial, I2C, SPI YY-MM-DD-dd HH:MM:SS (24 hr) No Backup Switching 900 mV 5.5 V - 40 C + 85 C RV-8063-C7 SMD/SMT Reel, Cut Tape, MouseReel
Micro Crystal Real Time Clock 32.768kHz I2C Time Acc. 1ppm
Datasheet
31,455On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

I2C YY-MM-DD-dd HH:MM:SS (24 hr) 2 B Backup Switching 1.2 V 5.5 V - 40 C + 85 C RV-3028 SMD/SMT Reel, Cut Tape, MouseReel