Clock/Timer Unit for Protocol Controllers

Product Specifications

Technical details and manufacturing context for Clock/Timer Unit

Definition

The Clock/Timer Unit is an electronic component used within a Protocol Controller to generate and distribute timing signals. It provides stable clock frequencies and timing references that coordinate data transmission and processing. The unit typically employs a quartz crystal oscillator or another timing source to produce a base frequency, which is then divided or multiplied to generate various clock signals required by the system. These signals synchronize digital circuits, manage timing windows for data transfer, and control time-sensitive operations. The unit operates within a supply voltage range of 3.3–5.0 V DC and supports clock frequencies from 1 to 100 MHz. Frequency tolerance is ±50 ppm at 25°C, with an operating temperature range of -40 to 85°C and a storage range of -55 to 125°C. Supply current is 5–20 mA at maximum frequency, and output logic levels are CMOS-compatible (0–3.3 V). Rise/fall times are 1–5 ns at a 15 pF load, duty cycle is 45–55%, and cycle-to-cycle jitter (RMS) is 1–10 ps. The unit has ESD tolerance of ±2000 V (HBM, per IEC 61000-4-2) and is available in a QFN-32 package, weighing 0.5–1.0 g. Materials include silicon, quartz crystal, copper, and ceramic substrate. These parameters are typical reference ranges; actual values must be confirmed with the manufacturer for specific models and applications. The unit is not a standalone product but a component intended for integration into a Protocol Controller. Verification of electrical characteristics, environmental limits, and compliance with relevant standards should be performed by the user or integrator.

Working Principle

The Clock/Timer Unit generates a stable frequency signal using a quartz crystal oscillator or similar timing source. This base frequency is then divided or multiplied to produce multiple clock signals needed by the Protocol Controller. These signals synchronize digital circuits, define timing windows for data transmission, and control time-sensitive operations. The unit ensures that all system elements operate in a coordinated manner, providing precise timing references for protocol execution.

Common Materials

Silicon, Quartz crystal, Copper, Ceramic substrate

Technical Parameters

Parameter	Typical range	Notes & selection driver
Supply Voltage	3.3–5.0 V DC	Operating range for logic and oscillator circuits
Clock Frequency	1–100 MHz	Determines timing resolution and max system speed
Frequency Tolerance	±50 ppm	Initial accuracy at 25°C; tighter for precision applications
Operating Temperature Range	-40–85 °C	Industrial grade; extended range available
Storage Temperature Range	-55–125 °C	Non-operating survival range
Supply Current	5–20 mA	At max frequency; lower in standby
Output Logic Level	0–3.3 V	CMOS compatible; high-level output ≥ 2.4 V
Rise/Fall Time	1–5 ns	At 15 pF load; affects signal integrity
Duty Cycle	45–55 %	Symmetry of output clock signal
Jitter (RMS)	1–10 ps	Cycle-to-cycle jitter; lower for high-speed interfaces
ESD Tolerance	±2000 V	HBM model; protects against handling damageIEC 61000-4-2
Package Type	QFN-32	Leadless package; other options available
Weight	0.5–1.0 g	Typical for QFN-32 package

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

Crystal Oscillator
Generates the base frequency signal using piezoelectric quartz crystal

Material: Quartz crystal, metal electrodes
Frequency Divider/Multiplier
Adjusts the base frequency to required clock rates

Material: Silicon semiconductor
Output Buffer Part
Amplifies and conditions the clock signal for distribution

Material: Silicon semiconductor, copper traces
Control Logic
Manages timing modes, synchronization, and power management

Material: Silicon semiconductor

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Clock/Timer Unit.

Applied To / Applications

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

Protocol Controller

View system integration details

Manufacturers of Clock/Timer Unit

Manufacturer profiles associated with Clock/Timer Unit.

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Frequently Asked Questions

What is the typical supply voltage range for the Clock/Timer Unit?

The typical supply voltage range is 3.3 to 5.0 V DC, as listed in the reference parameters. However, the exact operating range may vary by model, so always check the datasheet from the manufacturer.

What clock frequencies does the unit support?

The unit supports clock frequencies from 1 to 100 MHz, as per the reference range. The actual frequency capability depends on the specific configuration and must be verified with the manufacturer.

What is the operating temperature range?

The operating temperature range is -40 to 85°C, with a storage range of -55 to 125°C. These are typical industrial-grade values; extended ranges may be available but must be confirmed.

Is the unit compliant with ESD standards?

The unit has an ESD tolerance of ±2000 V (HBM) per IEC 61000-4-2, as listed. This is a reference value for handling protection; compliance should be verified with the manufacturer for the specific model.

Data Basis

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

Preliminary Technical Classification

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pressure:	0.5 to 1.5 atm
other spec:	Clock frequency: 1 MHz to 100 MHz
temperature:	-40°C to +85°C

Clock/Timer Unit

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards