Structured Manufacturing Data (2026)

Real-Time Clock

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Real-Time Clock used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Real-Time Clock is characterized by the integration of Quartz Crystal Oscillator and CMOS Counter Circuit. In industrial production environments, manufacturers listed on CNFX commonly emphasize Silicon semiconductor construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An electronic component that keeps track of current time independently of the main system power.

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Product Specifications

Technical details and manufacturing context for Real-Time Clock

Definition
A specialized integrated circuit within the Data Logging Module that maintains accurate timekeeping even when the main system is powered off, enabling timestamped data recording for process monitoring, compliance documentation, and event sequencing in industrial applications.
Working Principle
Utilizes a quartz crystal oscillator to generate precise timing signals, with a backup battery or capacitor to maintain timekeeping during power interruptions. The clock circuit counts oscillations to track seconds, minutes, hours, and date, providing synchronized time data to the logging system.
Common Materials
Silicon semiconductor, Quartz crystal
Technical Parameters
  • Timekeeping accuracy measured in parts per million deviation (ppm) Customizable
Components / BOM

Industry Taxonomies & Aliases

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

real-time clock module for embedded systems quartz crystal RTC component manufacturing CMOS counter circuit real-time clock backup battery RTC for electronics industrial real-time clock IC with oscillator

Applied To / Applications

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

Data Logging Module
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CPU Module
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Single Board Computer
View system integration details
Building Automation Controller
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (solid-state component)
other spec: Supply Voltage: 1.8V to 5.5V, Accuracy: ±2ppm to ±20ppm
temperature: -40°C to +85°C
Media Compatibility
✓ Indoor Electronics Enclosures ✓ Automotive Dashboard Systems ✓ Industrial Control Panels
Unsuitable: High-Vibration Marine Engine Rooms
Sizing Data Required
  • Required Timekeeping Accuracy (ppm)
  • Operating Voltage Range (V)
  • Communication Interface (I²C/SPI/Parallel)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Crystal oscillator drift
Cause: Aging of quartz crystal, temperature fluctuations, or voltage instability affecting timing accuracy
Battery depletion
Cause: Primary cell exhaustion or leakage, leading to loss of timekeeping during power interruptions
Maintenance Indicators
  • Inconsistent or erratic system time display across connected devices
  • Audible system beeps or error messages indicating CMOS/RTC failure during boot-up
Engineering Tips
  • Implement periodic synchronization with a reliable external time source (e.g., NTP server) to compensate for drift
  • Use high-quality, long-life lithium batteries with leakage protection and monitor voltage levels during routine maintenance checks

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 60721-3 Environmental Conditions Classification CE Marking (EU Directive 2014/35/EU Low Voltage Directive)
Manufacturing Precision
  • Timekeeping Accuracy: +/- 2 seconds per day at 25°C
  • Frequency Stability: +/- 20 ppm over operating temperature range
Quality Inspection
  • Temperature Cycling Test (-40°C to +85°C)
  • Long-term Timekeeping Accuracy Verification (30-day continuous measurement)

Factories Producing Real-Time Clock

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of a Real-Time Clock in electronic systems?

A Real-Time Clock (RTC) maintains accurate timekeeping independently of the main system power, providing continuous time/date tracking even during power interruptions using backup power sources.

Why do Real-Time Clocks use quartz crystal oscillators?

Quartz crystal oscillators provide precise frequency stability (typically 32.768 kHz) essential for accurate timekeeping, with low power consumption and excellent temperature stability for industrial applications.

How does the backup power interface work in RTC components?

The backup power interface (typically using batteries or supercapacitors) maintains power to the CMOS counter circuit during main power loss, preserving time/date data and ensuring uninterrupted timekeeping functionality.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Computer, Electronic and Optical Product Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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