The flexibility and reliability of the ATMEGA328-PU microcontroller make it highly popular in embedded systems. This 8-bit device features 28 pins and is programmed using C++ within the Arduino IDE. It supports functions such as interrupt handling and communication protocols like I2C, SPI, and UART, making it well-suited for a wide range of electronics projects. Its ease of use and efficiency have established it as a favorite for educational purposes and prototyping.
Overview of the ATMEGA328-PU Microcontroller
The ATmega328-PU microcontroller is a compact computer chip designed for exceptional efficiency and powerful functionality. Operating on a simple 8-bit architecture, it excels at conserving energy while executing tasks rapidly. This chip can process up to one million tasks per second for every megahertz of power used, meaning it requires minimal power to perform well. This capability proves especially valuable for projects requiring energy efficiency, such as battery-powered devices. Its design encourages inventors to devise clever and practical methods for utilizing it in projects demanding intelligent power management.
Features of the ATMEGA328-PU
• Executes up to 131 powerful instructions per clock cycle.
• Features 32 general-purpose registers, each 8 bits wide.
• Operates entirely statically.
• Achieves up to 20 MIPs (millions of instructions per second) at 20 MHz.
• Features an on-chip 2-cycle multiplier.
• Supports 10,000 Flash write/erase cycles and 100,000 EEPROM cycles.
• Includes an optional boot code section with a dedicated lock bit for security.
• Enables system programming via chip-start procedures.
• Supports simultaneous read/write operations.
• Provides a programming lock for secure software.
• Supports Atmel® Qtouch® for creating capacitive touch interfaces such as buttons, sliders, and wheels.
• Accommodates up to 64 sensory channels for touch sensing.
• Includes two 8-bit and one 16-bit timer/counters, each with adjustable modes and prescalers.
• Features a hardware counter with dedicated oscillator.
• Provides six PWM (Pulse Width Modulation) channels.
• Includes a programmable serial USART for communication.
• Equipped with a Serial Peripheral Interface (SPI) for connecting to other microcontrollers or devices.
ATMEGA328-PU Architecture Diagram
The ATMEGA328-PU features an AVR core with 32 general-purpose registers directly linked to the arithmetic logic unit (ALU), enabling the microcontroller to access two registers simultaneously and boosting its speed through single instructions—up to ten times faster than traditional microcontrollers. It offers a comprehensive feature set, including 4K to 8K bytes of in-system programmable flash memory, 256 bytes to 1K bytes of EEPROM, 512 bytes to 2K bytes of SRAM, 23 I/O pins, advanced timers, and counters with multiple modes. It also incorporates built-in serial interfaces such as USART and SPI, a 6-to-8-channel 10-bit ADC, a programmable watchdog timer with an internal oscillator, and five power-saving modes. These modes range from Idle Mode, which halts the CPU while keeping certain functions active, to Power Mode, which preserves register contents but suspends most chip functions. Power Storage Mode allows timers to run while other functions pause, The ADC noise reduction mode minimizes operational noise, while the standby mode keeps the oscillator active for rapid restart while conserving power.
Compared to other microcontroller architectures, the ATmega series strikes a good balance between performance, power consumption, and cost. While it may not offer superior absolute performance compared to 32-bit microcontrollers like the ESP32, its simpler development process and lower power consumption make it irreplaceable in specific applications.
One-Stop HDI PCB Manufacturer and Its PCB Via Filing Capabilities
If you're looking for turnkey HDI electronics manufacturing services (EMS) from hardware development to PCBA fabrication and box-build assembly, you can work with the one-stop HDI PCBA manufacturer PCBONLINE.
Founded in 1999, PCBONLINE has R&D capabilities for HDI projects and EMS manufacturing capabilities, including via filling for stacked vias. It provides 4-to-64-layer HDI PCB fabrication, assembly, and PCBA box-build assembly. You can order various HDI PCBs from PCBONLINE, such as FR4, polyimide (flexible PCB), polyimide + FR4 (rigid-flex PCB), and PTFE/Rogers (high-frequency PCB).
3000m² of production capacity per day for HDI PCBs with builds of 1+N+1, 2+N+2, 3+N+3,4+N+4, and arbitrary interconnection in any layers.
PCBONLINE has hardware and software R&D capabilities for IoT applications requiring HDI design, including PCBA and enclosures.
We can manufacture complex PCBs with stacker vias, via-in-pad, microvias, inlay boards, heavy copper designs, and hybrid and fine structure lay-ups.
Besides HDI PCB fabrication, we have powerful capabilities in fine-pitch assembly for HDI PCB assembly.
We have rich R&D and manufacturing experience for HDI applications such as FPGA boards.
High-quality HDI PCB and PCBA manufacturing certified with ISO 9001:2015, IATF 16949, RoHS, REACH, UL, and IPC-A-610 Class 2/3.
Here'e the PCB via filing capabilities at PCBONLINEL:
- Micriavia filling with copper: laser via size 0.1-0.125mm, priority 0.1mm
- Finished hole size for via-in-pad filling with resin: 0.1-0.9mm (drill size 0.15-1.0mm), 0.3-0.55mm normal (drill size 0.4-0.65mm)
- Max aspect ratio for via-in-pad filling with resin PCB - 12: 1
- Min resin plugged PCB thickness: 0.2mm
- Max via-filling ith resin PCB thickness: 3.2mm
- Making different hole sizes with via filling in one board: Yes
- Via filling with copper/silver: Yes
If you need HDI PCBAs or any other PCBAs requiring via filling, please send your email to PCBONLINE at info@pcbonline.com. We will provide one-on-one engineering support to you.
Conclusion
Via filling is used for creating stacked vias in HDI PCB fabrication, BGA/CSP/QFN IC packaging, and filling PCB via-in-pad with resin during multilayer PCB fabrication. If you need one-stop electronics manufacturing for your HDI PCBA project, contact the one-stop advanced PCB manufacturer PCBONLINE for high-quality PCBA and box-build solutions tailored to your project's needs.
PCB fabrication at PCBONLINE.pdf
