The 10-pad 3.7x2.5 package Golledge Real Time Clock


RTC I2C bus Low Power

  • Ultra low power consumption (130nA)
  • AEC-Q200 compliant option
  • Compliant with I2C-Bus interface (400kHz)
  • Backup battery input, alarm, timer and interrupt
  • Previously named RV8523C3
Configurable Options
ParameterOption Code
Frequency tolerance
Quantity / Special Request

Please specify the quantity you require below.

The RV-8523-C3 is supplied on tape and reel. 1k or 3k 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

If you're looking for an all-in-one solution at low supply voltages with good current consumption performance the RV-8523-C3 fits the bill. With supply voltages as low as 1.2V, and current consumption as low as only 130nA in time-keeping mode the RV-8523-C3 module can save time and procurement costs.

Featuring I2C bus interface and good shock and vibration performance, this module is also available with AEC-Q200 qualification and full PPAP documentation on request. If you're looking for something with cutting-edge power consumption you may wish to consider the RV-1805-C3, or for an ultra-miniature package with highly competitive pricing the RV-4162-C7.

In order to align ourselves with industry-standard nomenclature the name of this product has been revised from RV8523C3 to RV-8523-C3. 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 (programmable) 32.768kHz ~ 1Hz
Dimensions 3.7 x 2.5 x 0.9mm
Turnover temperature (T0) +25°C ±5°C
Frequency / temp coefficient -0.035ppm/°C2 ±10%
Operating temperature range -40 to +85°C
Storage temperature range -55 to +125°C
Supply voltage (VDD) I2C bus active 1.6 ~ 5.5V
Power management 1.8 ~ 5.5V
Time-keeping mode 1.2 ~ 5.5V
Supply current (during access) 100/200µA typ/max (fscl=1MHz)
50/100µA typ/max (fscl=100kHz)
Supply current (time-keeping) 130/180nA typ/max (fscl=0Hz, VDD=3V)
110/160nA typ/max (fscl=0Hz, VDD=2V)
Ageing ±3ppm max first year
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 RV8523C3 Real Time Clock showing full dimensions.
Ordering Information

To request a quotation for the RV-8523-C3 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.

CAD Models

Our RV-8523-C3 is included in the following design libraries. Click to download the library of your choice.

Technical Resources

The RV-8523-C3 real time clock is a versatile component suitable for a wide range of applications and uses including:

  • Automotive
  • Health Care
  • IoT
  • Industrial
  • Metering
  • Portable Devices
  • Wearables
Tape & Reel Specification
Tape and Reel specifications for the GTXO-C77V

A:178* B:12 C:4 D:2.7 E:4 F:1 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)


Ceramic package


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-8523-C3 is manufactured by Micro Crystal and stocked and supplied by Golledge.

Other Information

An evaluation/development board for the RV-8523-C3 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

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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.