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ATMEGA16U2-MUR
ATMEGA16U2-MUR
| Part Number | ATMEGA16U2-MUR |
|---|---|
| Manufacturer | Microchip Technology / Atmel |
| Category | Integrated Circuits (ICs) > Embedded – Microcontrollers |
| Description | High-performance, low-power 8-bit AVR RISC-based microcontroller featuring 16 KB ISP Flash, USB 2.0 full-speed device controller, integrated crystal-less oscillator, and hardware multiplier in a space-saving 32-pin QFN package. |
| Stock Status | In Stock |
| Origin | Original Factory (Philippines / Thailand) |
Product Overview
The ATMEGA16U2-MUR is a low-power, high-performance 8-bit AVR® RISC microcontroller from Microchip (formerly Atmel). Designed with native USB 2.0 Full-Speed connectivity, it fits PC peripherals, industrial signal converters and compact custom embedded hardware.
This MCU executes most instructions in a single clock cycle, delivering up to 1 MIPS per MHz to balance processing speed and power efficiency. Its standout feature is the integrated USB 2.0 Full-Speed controller with built-in transceiver and multi-endpoint support.
It carries 16 KB self-programmable ISP Flash, 512 Bytes EEPROM and 512 Bytes internal SRAM. A factory-calibrated internal RC oscillator supports crystal-free USB communication to cut PCB BOM cost. Packaged in compact 32-pin VQFN and supplied on tape-and-reel, it acts as a stable, cost-effective USB-to-serial bridge for global electronic designs.
Core Advantages
Integrated Full-Speed USB 2.0 Controller
On-chip USB module integrates internal transceiver, dedicated 48MHz PLL and 176 Bytes independent USB DPRAM with configurable endpoints. It removes the need for separate external USB PHY chips to simplify circuit layout.
High-Efficiency AVR® RISC Architecture
Single-cycle execution design with full instruction set, 32 general-purpose registers and built-in hardware multiplier. It achieves fast computing performance while keeping compiled firmware code compact.
Crystal-Less PCB Layout Support
Factory-calibrated internal RC oscillator locks automatically to USB frame sync signals. Designers can remove external crystal components to shrink PCB size and reduce total material expenses.
Comprehensive System Protection Circuits
Equipped with an independent internal-oscillator watchdog timer, brown-out detection circuit and secure bootloader partition. It provides reliable hardware protection and safe field firmware upgrades.
Key Specifications
| Brand | Microchip® AVR® ATmega Family with Native USB Peripheral Integration |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Halogen-Free Materials Certified (“U” Suffix Matte-Tin Finish) |
| EDA/CAD Model | 3D STEP Models, Schematic Symbols, and Pinout Footprint Configurations available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 32-VFQFN (5mm × 5mm × 0.50mm) |
| Mounting Type | Surface Mount Technology (SMD/SMT Leadless Reflow Solder Assembly) |
| Tape & Reel Standard Quantity | 5000 Pieces per reel (R suffix packaging) |
| Surface Marking / Silkscreen | MEGA16U2 Marking |
| Core Architecture | 8-Bit AVR® RISC Microcontroller Processor Engine, Single-Cycle Instruction Execution |
| Hardware Multiplier | Integrated Hardware Multiplier for Fast Arithmetic Operation |
| Maximum Clock Speed | Up to 16 MHz at 4.5V – 5.5V Operating Voltages (8 MHz at 2.7V – 4.5V) |
| Program Memory (Flash) | 16 KB In-System Programmable Flash with Read-While-Write capability |
| Data EEPROM Memory | 512 Bytes of high-endurance non-volatile byte-accessible EEPROM, 100 Years Data Retention at 25°C |
| Internal Data SRAM | 512 Bytes of internal static RAM supporting volatile system variables |
| USB DPRAM | 176 Bytes Independent DPRAM for USB Endpoint Buffer Allocation |
| USB Transfer Speed | USB 2.0 Full-Speed, Up to 12 Mbps Transfer Rate |
| Digital I/O Pin Count | 22 General-Purpose I/O Lines with configurable internal pull-up resistors |
| Serial Communication Ports | Standard Hardware USART (with Master SPI mode), SPI Master/Slave, and USB 2.0 Device interfaces |
| Watchdog Timer | Independent Internal Low-Power Oscillator Driven Watchdog Circuit |
| Operating Voltage Bounds ($V_{CC}$) | 2.7V to 5.5V Continuous Main Power Grid Flexibility |
| Operating Temperature Range | -40°C to +85°C (Industrial-Grade Environmental Thermal Boundaries) |
Typical Applications
- USB-to-Serial/UART/SPI Converters, Hardware Dongles, and Programming Adapters
- PC Peripherals, Custom Mechanical Keyboards, Gaming Controllers, and Smart Mouse Modules
- Industrial Data Acquisition Hubs, Fieldbus Protocol Converters, and Modbus-to-USB Interfaces
- Smart Home Hubs, Consumer Electronic Audio Mixers, and Interactive USB Audio Gadgets
- Development Prototyping Infrastructure, Educational Microcontroller Platforms, and Robotics Controllers
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: Is your ATMEGA16U2-MUR stock 100% genuine original?
A: Yes. All ATMEGA16U2-MUR chips in our warehouse are brand-new original Microchip/Atmel factory stock. Every batch passes strict incoming quality inspection.
All products are packed in original moisture-proof ESD bags to avoid contamination or damage to QFN pins during storage and shipping.
Q2: What do the suffix “MU” and “R” stand for in ATMEGA16U2-MUR?
A: “MU” means 32-pad VQFN matte-tin package with industrial temperature range (-40℃ ~ +85℃).
“R” stands for Tape & Reel packaging, compatible with automatic SMT pick-and-place production lines.
Q3: Can ATMEGA16U2-MUR realize full-speed USB without external crystal?
A: Yes. It integrates factory-calibrated internal RC oscillator with auto USB clock recovery.
It locks sync signals from USB bus directly, so external crystal is not required, saving PCB space and reducing BOM cost.
Q4: What’s the difference between ATMEGA8U2 / ATMEGA16U2 / ATMEGA32U2?
A: The only difference is Flash memory size:
– ATMEGA8U2: 8KB Flash
– ATMEGA16U2: 16KB Flash
– ATMEGA32U2: 32KB Flash
They share identical pinout, peripherals and electrical parameters, no PCB layout change needed when switching models.
Q5: Can I get free samples and official datasheet?
A: Yes, we support sample testing and can provide full official Microchip datasheet. Please submit your demand via the inquiry form, we will reply within 24 hours.
Q6: What is the lead time and MOQ for ATMEGA16U2-MUR?
A: MOQ is 1 piece for spot stock. In-stock orders can be shipped within 1-2 working days, global delivery takes 3-7 working days by DHL/FedEx/UPS.
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