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QU80386EX25
QU80386EX25
| Part Number | QU80386EX25 |
|---|---|
| Manufacturer | Intel |
| Category | Integrated Circuits (ICs) > Embedded – Microprocessors |
| Description | High‑Performance 32‑Bit Embedded 386EX Microprocessor, 25 MHz Operating Frequency, Integrated System Peripherals, 132‑Pin PQFP Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The QU80386EX25 is Intel 386EX family 32‑bit embedded microprocessor running at 25 MHz. It integrates rich on‑chip peripherals for legacy industrial embedded systems. Operating at 5.0V, it offers full x86 software compatibility in 132‑pin PQFP lead‑free package, suitable for automation, telecom and long‑life embedded equipment.
Core Advantages
32‑Bit x86 Compatibility
32‑bit 80386SX core, supports legacy x86 firmware and real‑time OS at 25 MHz.
High Level Integration
Built‑in USART, DMA, interrupt controller, timers and watchdog, reduces external peripheral components.
Low‑Power Operation
Idle & power‑down sleep modes for power‑sensitive sealed embedded devices.
Proven Field Reliability
Stable performance under commercial temperature range, good noise immunity for industrial scenarios.
Key Specifications
| Brand | Intel |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free (QU‑Prefix) |
| EDA/CAD | Symbol, Footprint & 3D Model Available |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | PQFP‑132 |
| Mounting Type | Surface Mount Device (SMD/SMT) |
| Surface Marking / Silkscreen | QU80386EX25 Marking |
| CPU Core | 32‑Bit 80386SX Core |
| Clock Speed | 25 MHz |
| Bus Width | 16‑Bit External Data Bus / 26‑Bit Address Bus (64 MB Physical Memory Space) |
| Supply Voltage (Vcc) | 5.0 V DC ±10% |
| Integrated Peripherals | DMA Controller, Interrupt Controller, Timers, Watchdog, Serial Ports, DRAM Refresh, JTAG Test Logic |
| Power‑Saving Modes | Idle Mode, Power‑Down Mode |
| Software Compatibility | x86 Real‑Mode, Compatible with legacy RTOS & DOS‑based firmware |
| Operating Temperature Range | 0°C to +70°C (Commercial Grade; Extended temp‑40℃~125℃ belongs to TB suffix variant, not QU‑PQFP version) |
| Packaging Format | Tray / Anti‑Static Protective Packaging |
Typical Applications
- Industrial automation controllers, PLC and CNC machinery control units
- Telecommunication legacy equipment, serial communication gateways
- POS terminals, banking and barcode scanning hardware
- Medical diagnostic and laboratory control instruments
- Long‑lifespan embedded computer systems requiring x86 legacy software support
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What does the “QU” prefix stand for in QU80386EX25?
A: “QU” means lead‑free RoHS‑compliant version with 132‑pin PQFP surface‑mount package. The TB suffix refers to through‑hole ceramic package for wide‑temperature‑range. They have different footprints and cannot be pin‑to‑pin compatible.
Q2: What voltage and temperature does QU80386EX25 support?
A: This QU‑PQFP chip runs at 5.0V DC ±10%, commercial temperature 0℃~+70℃. It is NOT a 3.3V device. The‑40℃~125℃ wide temperature belongs to TB ceramic series parts.
Q3: How is 386EX different from standard 80386 processors?
A: 386EX is an embedded‑optimized derivative. It integrates DMA, interrupt controller, timers, watchdog, serial port and DRAM refresh circuits on‑chip. It greatly reduces the number of external peripheral components.
Q4: Are there pin‑compatible or cross‑brand replacements for QU80386EX25?
A: There are no true drop‑in cross‑brand equivalents. You may select other speed grades within Intel 386EX family. For new hardware design, modern x86 SoC or high‑end ARM MCU are recommended, which requires full hardware and firmware redesign.
Q5: What is the difference between QU80386EX25 and QU80386EX33?
A: They share the same PQFP‑132 footprint, peripherals and 5V power supply. Only the maximum clock speed differs: 25 MHz for QU80386EX25, 33 MHz for QU80386EX33. They can be socket‑swapped if your clock circuit supports target frequency.
Q6: Can TB‑package 80386EX directly replace QU80386EX25?
A: No. TB is through‑hole ceramic package. Its mechanical footprint does not match PQFP‑132 SMD. It cannot be soldered onto existing QU‑version PCB, even though internal silicon functions are similar.
Q7: How do I get datasheet, pinout diagram or volume quotation?
A: Please submit your demand via Quick Inquiry form. Our technical‑sales team will send datasheets, stock confirmation and price offers within 24 hours.
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