Real-Time Clock Module for Industrial Synchronization

Product Specifications

Technical details and manufacturing context for Real-Time Clock Module

Definition

The Real-Time Clock Module is a dedicated electronic component used within an Industrial Synchronization Controller to maintain accurate real-time tracking. It serves as the time reference source for synchronization operations, enabling coordinated timing across industrial processes and equipment. The module is designed for integration into systems where precise timekeeping is critical for operational consistency. It operates using a quartz crystal oscillator to generate stable clock signals, and it includes battery-backed memory to preserve timekeeping during power interruptions. The module continuously counts seconds, minutes, hours, and dates while providing synchronization pulses to the controller. Key parameters include a supply voltage range of 1.8–5.5 V DC for the I2C interface, a timekeeping current of 0.3–1.0 µA (typical 0.5 µA at 3.0 V), and an accuracy of ±2 ppm at 25 °C. The I2C bus frequency supports standard and fast modes up to 400 kHz. The module is rated for industrial-grade operating temperatures from -40 to 85 °C, with a storage temperature range of -55 to 125 °C. It operates in non-condensing humidity from 5% to 95% RH. ESD tolerance is ±2 kV per the HBM model, referenced to IEC 61000-4-2. Package sizes range from SOP-8 to TSSOP-8, with dimensions from 3.0 to 8.0 mm, and weight varies from 0.1 to 0.5 g depending on package type. The module is constructed with a quartz crystal, integrated circuit, and lithium battery. These specifications are directory reference ranges; for a specific application, verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The Real-Time Clock Module uses a quartz crystal oscillator to generate a stable clock signal. The oscillator's frequency is divided to count seconds, minutes, hours, and dates. A lithium battery provides backup power to maintain timekeeping when the main supply is interrupted. The module outputs synchronization pulses to the controller, ensuring coordinated timing. The I2C interface allows the controller to read and set the time. The module's accuracy is maintained by the crystal's frequency stability, typically ±2 ppm at 25 °C. The battery-backed memory ensures that time data is retained during power loss.

Common Materials

Quartz crystal, Integrated circuit, Lithium battery

Technical Parameters

Parameter	Typical range	Notes & selection driver
Supply Voltage	1.8–5.5 V DC	Operating range for I2C interface
Timekeeping Current	0.3–1.0 µA	At 3.0 V, typical 0.5 µA
Accuracy	±2 ppm	At 25 °C, typical ±2 ppm
I2C Bus Frequency	0–400 kHz	Standard and fast mode
Operating Temperature	-40–85 °C	Industrial grade
Storage Temperature	-55–125 °C	Non-operating
Humidity	5–95 % RH	Non-condensing
ESD Tolerance	±2 kV	HBM modelIEC 61000-4-2
Package Size	3.0–8.0 mm	SOP-8 to TSSOP-8
Weight	0.1–0.5 g	Depends on package type

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Quartz Crystal Oscillator
Generates precise timing frequency

Material: Quartz
RTC Integrated Circuit Part
Processes time data and interfaces with controller

Material: Semiconductor
Backup Battery Part
Maintains timekeeping during power loss

Material: Lithium
PCB Board Part
Mounting platform for electronic components

Material: Fiberglass

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Real-Time Clock Module.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Synchronization Controller

View system integration details

Manufacturers of Real-Time Clock Module

Manufacturer profiles associated with Real-Time Clock Module.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the supply voltage range for the I2C interface?

The supply voltage range for the I2C interface is 1.8–5.5 V DC. This is a reference range; verify the exact requirement for your specific module model.

How does the module maintain time during power interruptions?

The module uses a lithium battery to power the timekeeping circuitry when the main supply is off. This ensures that the clock continues to count and retains time data.

What is the accuracy of the real-time clock?

The accuracy is typically ±2 ppm at 25 °C. This means the clock may drift by up to 2 seconds per million seconds (about 1 minute per year). Actual accuracy depends on operating conditions.

What is the operating temperature range?

The operating temperature range is -40 to 85 °C, industrial grade. The storage temperature range is -55 to 125 °C. Ensure your application environment is within these limits.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Not applicable (electronic component, no pressure rating)
other spec:	Supply voltage: 1.8V to 5.5V, Timekeeping accuracy: ±2ppm to ±20ppm depending on crystal, Backup current: 0.25μA to 1μA
temperature:	-40°C to +85°C (industrial grade), -20°C to +70°C (commercial grade)

Real-Time Clock Module

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards