行业组件数据 · 2026

比较寄存器

A digital logic component in timers/counters that compares stored values with input signals to trigger outputs.

技术定义与适配语境
典型 比较寄存器 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A compare register is a specialized digital storage element within timer/counter modules that holds a predefined reference value. It continuously compares this stored value against the current count from the timer/counter's accumulator. When the count matches or exceeds the reference value, it generates an output signal or interrupt, enabling precise timing control, event triggering, or pulse-width modulation in industrial automation systems.

组件规格

定义
A compare register is a specialized digital storage element within timer/counter modules that holds a predefined reference value. It continuously compares this stored value against the current count from the timer/counter's accumulator. When the count matches or exceeds the reference value, it generates an output signal or interrupt, enabling precise timing control, event triggering, or pulse-width modulation in industrial automation systems.
工作原理
The compare register operates by storing a user-defined threshold value. The timer/counter's accumulator increments or decrements based on clock pulses or external events. A digital comparator circuit continuously monitors the accumulator value against the stored compare value. When equality or a defined relational condition (e.g., greater than or equal to) is met, it sets a flag or triggers an output signal, which can reset the timer, generate interrupts, or control external devices.
材料
Semiconductor materials (silicongallium arsenide) with integrated circuitssubstrate: FR-4 epoxy laminatecontacts: gold-plated copper alloyencapsulation: epoxy resin or ceramic package.
Bit Width
8-bit to 32-bit
Output Type
Digital (TTL/CMOS)
Clock Frequency
Up to 100 MHz
Comparison Modes
Equality, Greater Than, Less Than
Operating Voltage
3.3V to 5V DC
Temperature Range
-40°C to +85°C
标准
ISO 13849-1IEC 61131-3DIN EN 61131

行业分类与别名

比较寄存器 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Voltage spikes or electrostatic discharge->Permanent damage to integrated circuits, leading to no output->Implement surge protection circuits and proper grounding
Software bug setting incorrect compare values->Premature or delayed triggering, disrupting process timing->Add range checks in firmware and use watchdog timers
Clock signal instability from poor PCB layout->Inconsistent comparison results, causing erratic machine behavior->Follow high-frequency design guidelines and use shielded cables

工业生态与工程逻辑

0
Electrical overstress damaging semiconductor components
1
Timing inaccuracies due to clock signal jitter
2
Software misconfiguration causing unintended triggers
3
Electromagnetic interference affecting signal integrity

合规与检测

tolerance
±0.01% of timing accuracy under specified temperature and voltage ranges
test method
Functional testing with signal generators and oscilloscopes to verify trigger points and output signals under load conditions

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary function of a compare register in a timer/counter?

It compares a stored reference value with the timer's current count to trigger outputs or interrupts at precise moments, used for timing events, generating waveforms, or controlling processes.

How does a compare register differ from a capture register?

A compare register outputs a signal when the timer count matches a preset value, while a capture register records the timer count when an external event occurs, storing it for later use.

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CNFX Industrial Component Index · 机械和设备制造

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