# ATmega328 Schematics ## Navigation - [Back to Sitemap](https://www.flux.ai/sitemap.md) - [Back to Schematics](https://www.flux.ai/sitemap/schematics.md) ## Description The ATmega328 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM, and is equipped with an extensive range of peripherals including an 8-channel 10-bit ADC, a USART, and up to 6 PWM channels. It is a popular choice for a wide range of applications including robotics, home automation, and Internet of Things (IoT) projects. Flux.ai has the world's largest community-driven public library of ATmega328 microcontrollers, with a comprehensive collection of footprints, symbols, datasheets, and simulation models. This makes it an excellent resource for engineers and developers looking to use the ATmega328 in their projects. Whether you're just getting started with microcontrollers or are an experienced user, Flux.ai has everything you need to get your project up and running. ## Items (Page 1 of 6, 150 total) - [Arduino Nano](https://www.flux.ai/vasyl/arduino-nano.md) - ATmega328 Arduino Nano series AVR MCU 8-Bit Embedded Evaluation Board - [ARDUINO_NANO](https://www.flux.ai/jecstronic/arduinonano.md) - Small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x) #Module #ArduinoNano - [ATMEGA328P-PU](https://www.flux.ai/adrian95/atmega328p-pu.md) - AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 28-PDIP #CommonPartsLibrary #Microcontroller #Atmega328 - [Arduino ATMEGA328P-MU Template](https://www.flux.ai/vasy_skral/arduino-atmega328p-mu-template.md) - Arduino Template based on ATMEGA328P-MU. This MCU is used in Arduino UNO Rev. 3, Arduino Nano V3.0, and some other. This template is a good starting point for your Arduino based project. #template #project #arduino #ATMEGA328P #project-template - [ATMEGA328-PU](https://www.flux.ai/adrian95/atmega328-pu.md) - AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 28-PDIP #CommonPartsLibrary #Microcontroller #Atmega328 - [ATMEGA328P-AU](https://www.flux.ai/adrian95/atmega328p-au.md) - AVR series Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-TQFP (7x7) #CommonPartsLibrary #Microcontroller #Atmega328 - [Arduino Pro Mini](https://www.flux.ai/adrian95/arduino-pro-mini.md) - This board was developed for applications and installations where space is premium and projects are made as permanent set ups. Small, available in 3.3 V and 5 V versions, powered by ATmega328P. - [ATmega328](https://www.flux.ai/natarius/atmega328.md) - ATmega Series 32 kB Flash 2 kB SRAM 20 MHz 8-Bit Microcontroller - TQFP-32. https://octopart.com/atmega328p-au-microchip-77760215 - [ATMEGA328PB-AU](https://www.flux.ai/adrian95/atmega328pb-au.md) - AVR series Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-TQFP (7x7) #CommonPartsLibrary #Microcontroller #Atmega328 - [Keypad lock Module](https://www.flux.ai/vasy_skral/keypad-lock-module.md) - This module involves the design of a keypad lock system. It utilizes an ATMEGA328P microcontroller, buzzers, LEDs for indicator functions and a 4x3 matrix keypad. An in-circuit serial programming (ISP) header is also present for programming the microcontroller. #template #lock #keypad #reusable #module #simple-embedded #microchip #arduino #atmega328 #TPS613222A #ISP #buzzer #sublayout - [ArduPlus_Tirth](https://www.flux.ai/tirth09/arduplustirth.md) - Welcome to the Design Challenge - ArduPlus by Tirth. This PCB is designed for remote monitoring, capable of collecting temperature data, processing it via the ATmega328, and transmitting it over long distances with a LoRa module. It's ideal for environments where power and bandwidth are limited. The inclusion of an ADC and op-amp supports complex sensor inputs, while mini-USB and CH340G facilitate easy programming and computer interfacing, enhancing its versatility and developer-friendliness. - [ATMEGA328P-Sublayout](https://www.flux.ai/adrian95/atmega328p-sublayout.md) - The METRO Mini works great with the Arduino IDE, and runs the ATmega328P at 16MHz so it is pin-compatible with Arduino UNO R3, you can use this with the Arduino IDE (both desktop and cloud version) by selecting 'Arduino UNO' in the Boards menu. - [Arduino-UNO-R3](https://www.flux.ai/ghhhhfgh/arduino-uno-r3.md) - The Arduino Uno R3 is a microcontroller board based on a removable ATmega328P 20 digital input/output pins AVR MCU 8-Bit 5V USB 16MHz #Module #Arduino - [Aaduino](https://www.flux.ai/adrian95/aaduino.md) - The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is meant to go inside a 3xAA battery holder creating a very small wireless node. Powered by an ATMega328p, it is fitted with an RFM69CW companion, two DS18B20 temperature sensors and an indicator LED - [ATMEGA328P-AU](https://www.flux.ai/jecstronic/atmega328p-au.md) - AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-TQFP (7x7) #CommonPartsLibrary #IntegratedCircuit #Embedded #Microcontroller #ATMEGA328 - [Keypad lock reference design](https://www.flux.ai/christophx/keypad-lock-reference-design.md) - This project involves the design of a keypad lock system. It utilizes an ATMEGA328P microcontroller, buzzers, LEDs for indicator functions and a 4x3 matrix keypad. An in-circuit serial programming (ISP) header is also present for programming the microcontroller. #project #Template #projectTemplate #lock #keypad #arduino #atmega328 #TPS613222A #ISP #buzzer #referenceDesign #simple-embedded #microchip #template #reference-design - [ATMEGA328P-MU](https://www.flux.ai/adrian95/atmega328p-mu.md) - AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-VQFN (5x5) #CommonPartsLibrary #Microcontroller #Atmega328 - [Arduino Nano](https://www.flux.ai/makis/arduino-nano.md) - ATmega328 Arduino Nano series AVR MCU 8-Bit Embedded Evaluation Board - [Atmega328P](https://www.flux.ai/danyela/atmega328p.md) - Tarjeta de desarrollo para el microcontrolador Atmega328P - [Wireless wearable glove](https://www.flux.ai/nagasasankalapati/wireless-wearable-glove.md) - This project is a wireless wearable glove (smart glove) for sign language translation. It uses Arduino Nano - ATMega328P, Accelerometer - ADXL345 and a Bluetooth module HC -05 to transmit and display the signs on any compatible display device like a mobile phone or a LCD - LM016L. In this project, I have used a 5x8 LCD display - LM016L to display the test converted. (strings, numbers etc.) - [Arduino-UNO-R3 jk8L](https://www.flux.ai/vasyl/arduino-uno-r3-jk8l.md) - The Arduino Uno R3 is a microcontroller board based on a removable ATmega328P 20 digital input/output pins AVR MCU 8-Bit 5V USB 16MHz - [Brainstorm a new project with AI [Example]](https://www.flux.ai/risk4444/brainstorm-a-new-project-with-ai-example.md) - make this for me now # Device Summary & Specification Sheet ## 1. Overview A rugged, Arduino-Uno-and-Raspberry-Pi-style single-board micro-PC featuring: - Smartphone-class CPU (Snapdragon 990) - USB-C Power Delivery + 4×AA alkaline backup + ambient-light harvester - On-board Arduino-Uno-compatible ATmega328P - External NVMe SSD via USB3 bridge & optional Thunderbolt 3 eGPU support - 5× USB 3.0 ports, HDMI in/out, Gigabit Ethernet & SFP fiber, Wi-Fi, Bluetooth, LoRa - 0.96″ OLED status display, 3.5 mm audio jack with codec --- ## 2. Key Specifications | Category | Specification | |--------------------|-------------------------------------------------------------------------------| | CPU | Snapdragon 990, octa-core up to 2.84 GHz | | Memory | 6 GB LPDDR4x DRAM | | Storage Interface | PCIe Gen3 ×4 → M.2 NVMe + USB 3.1 Gen1 bridge | | MCU | ATmega328P (Arduino-Uno-compatible) | | Power Input | USB-C PD up to 20 V/5 A; 4×AA alkaline backup; ambient-light photodiode boost | | Power Rails | 12 V, 5 V, 3.3 V, 1.8 V, 1.2 V via buck/buck-boost regulators | | USB Hub | 5× USB 3.0 downstream ports | | Display | 0.96″ 128×64 OLED via I²C/SPI | | Networking | 1 × Gigabit RJ45; 1 × SFP fiber; Wi-Fi 802.11ac + Bluetooth; LoRa SX1276 | | Video I/O | HDMI 2.0 input (RX) & output (TX) | | Audio | 3.5 mm jack + TLV320AIC3101 codec; Bluetooth audio | | Form Factor | Raspberry Pi–style header + Arduino-Uno shield headers; 4× standoff mounts | --- ## 3. Complete Parts List | Part | Function | Qty | |------------------------------------------------------------------------------------------------|-----------------------------------------------|-----| | [Snapdragon 990](https://www.flux.ai/search?type=components&q=Snapdragon%20990) | Main application CPU | 1 | | [LPDDR4x DRAM](https://www.flux.ai/search?type=components&q=LPDDR4x%20DRAM) | System memory | 1 | | [eMMC 64GB](https://www.flux.ai/search?type=components&q=eMMC%2064GB) | On-board storage | 1 | | [M.2 NVMe Connector](https://www.flux.ai/search?type=components&q=M.2%20NVMe%20Connector) | External SSD interface | 1 | | [JMS583](https://www.flux.ai/search?type=components&q=JMS583) | PCIe→USB 3.1 bridge for NVMe | 1 | | [Titan Ridge](https://www.flux.ai/search?type=components&q=Titan%20Ridge) | Thunderbolt 3/eGPU controller | 1 | | [STUSB4500](https://www.flux.ai/search?type=components&q=STUSB4500) | USB-C Power-Delivery controller | 1 | | [LTC4412](https://www.flux.ai/search?type=components&q=LTC4412) | Ideal-diode OR-ing | 1 | | [LTC3108](https://www.flux.ai/search?type=components&q=LTC3108) | Ambient-light (solar) energy harvester | 1 | | [Battery Holder 4×AA](https://www.flux.ai/search?type=components&q=Battery%20Holder%204xAA) | Alkaline backup power | 1 | | [TPS53318](https://www.flux.ai/search?type=components&q=TPS53318) | 6 V→5 V synchronous buck regulator | 1 | | [MCP1700-3302E/TO](https://www.flux.ai/search?type=components&q=MCP1700-3302E/TO) | 6 V→3.3 V LDO | 1 | | [TPS63060](https://www.flux.ai/search?type=components&q=TPS63060) | Buck-boost for 12 V rail (eGPU power) | 1 | | [ATmega328P](https://www.flux.ai/search?type=components&q=ATmega328P) | Arduino-Uno microcontroller | 1 | | [ESP32-WROOM-32](https://www.flux.ai/search?type=components&q=ESP32-WROOM-32) | Wi-Fi + Bluetooth co-processor | 1 | | [SX1276](https://www.flux.ai/search?type=components&q=SX1276) | LoRa transceiver | 1 | | [TUSB8041](https://www.flux.ai/search?type=components&q=TUSB8041) | 5-port USB 3.0 hub IC | 1 | | [Ethernet PHY](https://www.flux.ai/search?type=components&q=Ethernet%20PHY) | Gigabit Ethernet physical transceiver | 1 | | [SFP Cage](https://www.flux.ai/search?type=components&q=SFP%20Cage) | Fiber-optic SFP module connector | 1 | | [TDA19978](https://www.flux.ai/search?type=components&q=TDA19978) | HDMI 2.0 receiver (input) | 1 | | [TFP410](https://www.flux.ai/search?type=components&q=TFP410) | HDMI 2.0 transmitter (output) | 1 | | [TLV320AIC3101](https://www.flux.ai/search?type=components&q=TLV320AIC3101) | Audio codec for 3.5 mm jack & Bluetooth audio | 1 | | [Audio Jack 3.5mm](https://www.flux.ai/search?type=components&q=Audio%20Jack%203.5mm) | Headphone/mic port | 1 | | [SSD1306 OLED](https://www.flux.ai/search?type=components&q=SSD1306%20OLED) | Status display | 1 | --- ## 4. High-Level Design & Implementation Steps 1. **Schematic Creation** - Section off blocks: CPU + memory, power-supply, NVMe/USB bridge, MCU, wireless, USB hub, video, audio, I/O headers. - Place all parts from the list and wire per respective datasheet reference circuits. 2. **Power System** - Implement USB-C PD with STUSB4500 → buck/buck-boost & LDO rails. - Add LTC4412 to OR-ing battery pack into 6 V bus. - Include LTC3108 harvest input to 6 V bus (no recharge to AA). - Add decoupling & bulk caps per regulator datasheets; PTC fuses & ESD diodes on inputs. 3. **SoC & High-Speed Interfaces** - Break out Snapdragon 990 BGA with DDR4 routing (point-to-point). - Route PCIe Gen3 lanes to M.2 slot via JMS583 and to Titan Ridge for TB/eGPU. - Follow high-speed layout guidelines: impedance, length matching, EMI filters. 4. **MCU & Expansion Headers** - Place ATmega328P with UNO-style 2.54 mm headers; add ISP 6-pin, I²C pull-ups, reset circuit. 5. **Connectivity Blocks** - USB hub: TUSB8041 + ESD + chokes → five USB-A 3.0 ports. - Ethernet: RJ45 + magnetics + PHY; SFP cage + PHY/SFP interface. - Wireless: ESP32 module pad + SX1276 + antenna matching; program pads. 6. **Video & Audio** - HDMI RX (TDA19978) & TX (TFP410) blocks with TMDS ESD & termination. - Audio codec + 3.5 mm jack; route differential audio lines; add ESD. 7. **Display & Indicators** - SSD1306 OLED on I²C; add pull-ups & backlight power if needed. - LEDs for power, charge, status. 8. **PCB Layout & Mechanical** - Follow Raspberry Pi 2×20 header footprint & UNO shield hole pattern. - Add reinforcement for rugged use; standoffs at corners. - Define 4-layer stackup: • Top: signal • L2: GND • L3: PWR • Bottom: signal 9. **DRC/ERC Reviews** - Run ERC for decoupling, pull-ups, power nets. - Run DRC for high-speed clearance, differential pairs, via aspect ratios. 10. **Fabrication & Testing** - Export Gerbers, IPC-2581, BOM. - Prototype assembly; verify power sequencing, rails, interfaces. - Functional tests: USB-C PD negotiation, NVMe throughput, eGPU over TB3, wireless comm, audio, OLED. --- This spec sheet and part list should guide your Flux schematic and PCB layout workflow through to fabrication and validation. Let me know if you’d like to deep-dive into any specific block or review datasheet details next! - [ATMega328P_CustomBoard](https://www.flux.ai/musicbya/atmega328pcustomboard.md) - A custom ATMega328P Board - Based on the Arduino Nano - USB Type C Capable - [ATmega328 temperature sensor with PT100 and K-type inputs](https://www.flux.ai/luckyneerajdhiman/atmega328-temperature-sensor-with-pt100-and-k-type-inputs.md) - Learn how to use AI Auto Layout on this ESP32 Espresso Smart Scale! In one click you’ll see AI Auto Layout perform magic. Pay close attention to how we recommend creating rulesets, zones, and fanouts. By copying the setup in this example on your own project, you’ll have a fully routed board in no time! - [Basic ATMEGA328 qdGG](https://www.flux.ai/gokmenim/basic-atmega328-qdgg.md) - Template for working with ATMEGA328PB (using 16MHz crystal) ## Pages - [Next Page](https://www.flux.ai/sitemap/schematics/atmega328.md?page=2) - Pages: **1** [2](https://www.flux.ai/sitemap/schematics/atmega328.md?page=2) [3](https://www.flux.ai/sitemap/schematics/atmega328.md?page=3) [4](https://www.flux.ai/sitemap/schematics/atmega328.md?page=4) [5](https://www.flux.ai/sitemap/schematics/atmega328.md?page=5) [6](https://www.flux.ai/sitemap/schematics/atmega328.md?page=6) --- *Generated from [https://www.flux.ai/sitemap/schematics/atmega328](https://www.flux.ai/sitemap/schematics/atmega328)*