The 10-pad 5032 package Real Time Clock from Golledge



  • Temperature compensated accuracy
  • AEC-Q200 compliant option
  • Compliant with 4-wire SPI bus
  • Backup battery input, alarm, timer and interrupt
  • Previously named RV3049C2
Configurable Options
ParameterOption Code
Time accuracy
Operating temperature range
Quantity / Special Request

Please specify the quantity you require below.

The RV-3049-C2 is supplied on tape and reel. 1k or 5k pcs per reel are the standard T&R pack sizes for this product. Partial quantities may be supplied on tape (no reel), or in bulk.

Product Description

Although no longer recommended for new designs, the RV-3049-C2 real time clock module with SPI bus interface does offer a range of excellent specifications and additional functionality for existing designs. Smart temperature compensation means this component is suitable for a wide range of applications, including external metering, with exellent temperature stability options available covering operating temperature ranges as wide as -40 to +125ºC.

RTC built-in functions include standard clock and calendar functions, with year tracking and leap-year flagging, and additional specialized functions include backup battery input with internal switchover function, programmable trickle-charge circuitry, integrated temperature sensor with digital output, and 8 bytes of RAM and 2 bytes of EEPROM. For new designs please consider the RV-3149-C3 which features the same functionality and specifications but within a smaller 3.7 x 2.5mm package and is more competitively priced.

In order to align ourselves with industry-standard nomenclature the name of this product has been revised from RV3049C2 to RV-3049-C2. There have been no changes to form, fit or function of the component. You can find more information in our product change notice PCN19032005321 here.

Frequencies (selectable) 32.768kHz, 1024Hz, 32Hz, 1Hz
Dimensions 5.0 x 3.2 x 1.2mm
Frequency tolerance @ 25°C ±10ppm typ, ±20ppm max
Storage temperature range -55 to +125°C
Supply voltage (VDD) SPI bus active 1.8 ~ 5.5V
Time-keeping mode 1.3 ~ 5.5V
Supply current (VDD=3.0V) 0.80µA typ, 1.0µA max
Shock and vibration resistance ±5ppm, 5,000g, 0.3ms, ½ sine
±5ppm, 20g, 10.0 ~ 2,000Hz
Soldering condition Reflow, 260°C, 20 sec max
Package Drawing
Package footprint and pad configuration drawing for the Golledge RV3049C2 Real Time Clock showing full dimensions.
Ordering Information

To request a quotation for the RV-3049-C2 please use the configurable options form to choose the options you require and then submit your configured product to our team. Our expert advisers are always happy to help with your requirements and can be contacted on +44 1460 256 100 or at

Following product selection you will be issued with a seven character Golledge part number. Your Golledge part number is the internationally accepted Golledge manufacturing part number (MPN) that should be used for all project documentation, including bills of materials (BoMs) and purchase orders.

If you have any queries regarding any of our documentation our dedicated sales team will be happy to help.


The RV-3049-C2 real time clock is a versatile component suitable for a wide range of applications and uses including:

  • Automotive including car radio, GPS and other tracking systems, dashboard devices, tachometers, entertainment systems, and engine control 
  • Industrial and consumer electronics
  • Metering including E-meter and heating counters
  • Outdoor including ATM and POS systems, surveillance and safety systems, and ticketing systems
  • Portable devices
  • White goods
Tape & Reel Specification
Tape and Reel specifications for the GTXO-C77V

A:178* B:12 C:5.3 D:3.5 E:8 F:1.4 G:80 H:21
*Larger reel size available. Please ask for details

Handling & Storage

ESD-HBM-1A Human Body Model (HBM) 1A (250V to <500V)

MSL1 Moisture Sensitivity Level (MSL): 1 (or not applicable)


SON 10-pin ceramic package with glass lid


PbFree Lead-free (< 0.1% by weight )

RoHS compliant with no exemptions RoHS compliant with no exemptions. See our declaration

REACH REACH compliant. See our statement

Conflict Minerals Statement Free of conflict minerals. See our declaration

Halogen Free Statement Free of Halogens. See our declaration

Ozone Depletion Statement Free of Ozone-depleting substances. See our declaration

Supply Partner
Supply Partner

The RV-3049-C2 is manufactured by Microcrystal and stocked and supplied by Golledge.

Other Information

An evaluation/development board for the RV-3049-C2 is also available on request. Please contact our expert advisers at for more information. 

Block Diagram
Block Diagram

Real Time Clock Modules - Quick Comparison Tools

Compare RTC specifications and extra features quickly and easily


Our comparison charts for both I2C and SPI-bus interface RTC modules means you can easily compare product specifications and extra features at a glance.