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8-bit MCUs Built for Real-time Control with Core Independent Peripherals


Combining intelligent hardware peripherals along with the low-power capability of an AVR® core, megaAVR® microcontrollers (MCUs) broaden the effectiveness of your real-time control systems. Devices like the ATmega4809, ATmega4808, ATmega3209 and ATmega3208 offer individualized options for larger memory, pin counts and packages, while devices such as the ATmega1609, ATmega1608, ATmega809 and ATmega808 offer lower memory and pin-count variants. In addition to their easy-to-configure Core Independent Peripherals, all of these devices include a high-speed Analog-to-Digital Converter (ADC) that enables efficient noise reduction. This makes devices in the ATmega4809 family optimal as companion MCUs for complex microprocessor-based systems, or as stand-alone processors in command-and-control environments.

Engineered for Real-time Control


Modern control applications utilize MCUs to increase their performance, while making them more efficient and reliable. These megaAVR devices take the concept further with a peripheral set designed to decrease system response time and increase reliability, while at the same time reducing overall code footprint, validation time and system development costs.

Getting Started

Take your next idea to market with a development board that you can keep in your pocket. With full program and debug capabilities, the ATmega4809 Curiosity Nano Evaluation Kit offers complete support for your next design. The ATmega4809 microcontroller broadens the effectiveness of real-time control systems with a combination of intelligent hardware peripherals alongside the low-power capacity of the AVR core.

Significantly reduce your development time with Atmel START, our intuitive, web-based graphical configuration tool for embedded projects. While you navigate through the easy-to-use interface, Atmel START generates factory-validated C-code to help get your design started quickly. Get started today at start.atmel.com

With a few clicks, Atmel START projects can be imported into Microchip Studio Integrated Development Environment (IDE) and can be easily modified at any time. 

ATmega4809 Key Attributes


  • Internal 20 MHz oscillator
  • Up to 48 KB of Flash memory
  • Up to 16-channel, high-speed 10-bit ADC
  • Cyclic Redundancy Check (CRC) with Scan
  • 16-bit Real Time Clock (RTC)
  • Configurable Custom Logic (CCL) peripheral
  • Six-channel Peripheral Event System
  • Analog Comparator with scalable reference input
  • Configurable, internally generated reference voltage
  • UART/SPI/dual-mode I2C
  • Available with up to 41 I/O

Building Blocks for Real-Time Control


High-Speed Analog-to-Digital Converter (ADC)
This ADC offers true 10-bit resolution and conversion speeds of 115,000 samples per second (ksps) to ensure accurate and timely analog signal acquisition. Triggering and notifications can be transmitted to other peripherals without CPU intervention, enabling real-time response to system events.

Peripheral Event System
The on board dual 10-bit, 115 ksps ADC and 8-bit Digital-to-Analog Converter (DAC) with multiple selectable internal voltage references and comparators can be connected internally to create closed-loop feedback without requiring pins or PCB space or can be used for other functions within your application. In addition, the on-board analog comparator offers fast propagation delay which is configurable through hysteresis. The analog comparator can also be connected directly with the DAC, and the output is directly available on a pin.

Configurable Custom Logic (CCL)
The CCL is a programmable logic peripheral that can be connected to the device pins, events or other internal peripherals. This allows the you to eliminate logic gates for glue logic functions on the PCB. Each Lookup Table (LUT) consists of three inputs, a truth table, options synchronizer, filter and edge detector. Each LUT can generate an output that can be routed internally or available on pins. This eliminates the need for external logic and reduces BOM cost.

New/Popular ATmega4809 Family Products 

View All Parametrics
Product Program Memory Size (KB) Program Memory Size (KWords) SRAM (Bytes) Pin Count ADC Input Max ADC Resolution (Bits) Status 5K Pricing CPU Type Architecture Family Bootload capable Emulated EEPROM in Flash Max I/O Pins Max CPU Speed (MHz) Peripheral Pin Select / Pin Muxing Vbat/Vddbu battery backup Brown-Out Reset Low Voltage Detection Power On Reset Internal Oscillator Hardware RTCC/RTC Watch Dog Timer Number of Comparators Number of Op Amps Number of ADCs Max ADC Sampling Rate (ksps) ADC with Computation Number of DACs DAC Outputs Max DAC Resolution (Bits) Internal Voltage Reference (Bandgap) Zero Cross detect Slope Compensation / Programmable Ramp Generator Data Signal Modulator CTMU Max 8-Bit Digital Timers Max 16-Bit Digital Timers Signal Measurement Timer Hardware Limit Timer Stand alone PWMs Capture / Compare/PWM (CCP) Enhanced Capture/Compare/PWM (ECCP) Max PWM outputs (including complementary) Number of PWM Time Bases PWM Max Resolution (Bits) Quadrature Encoder Interface Angular Timer Math Accelerator UART SPI I2C Number of USB Modules USB Interface USB Active Clock Tuning Number of CAN Modules CAN Transmit Buffers CAN Receive Buffers Ethernet LIN IrDA Parallel Port Class B Support CRC Configurable Logic Cell (CLC/CCL) Complementary Waveform Generator / Complementary Output Generator Numerically Controlled Oscillator Programmable Switched Mode Controller Hardware Cap Voltage Divider Cap. Touch Channels Segmented LCD Keeloq Hardware Crypto Engine JTAG Temp Range Min Temp Range Max Operation Voltage Min (V) Operation Voltage Max (V) High Voltage Capable Packages
ATMEGA1608 16 8 2048 32 12 10 In Production $0.62 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 27 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 4 0 0 9 0 0 9 0 0 0 No No 3 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 28/SSOP, 32/TQFP, 32/VQFN
ATMEGA1609 16 8 2048 48 16 10 In Production $0.93 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 41 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 5 0 0 11 0 0 8 0 0 0 No No 4 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 48/TQFP, 48/VQFN
ATMEGA3208 32 16 4096 32 12 10 In Production $0.73 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 27 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 4 0 0 9 0 0 9 0 0 0 No No 3 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 28/SSOP, 32/TQFP, 32/VQFN
ATMEGA3209 32 16 4096 48 16 10 In Production $1.00 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 41 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 5 0 0 11 0 0 8 0 0 0 No No 4 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 48/TQFP, 48/VQFN
ATMEGA4808 48 24 6144 32 12 10 In Production $0.82 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 27 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 4 0 0 9 0 0 9 0 0 0 No No 3 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 28/SSOP, 32/TQFP, 32/VQFN
ATMEGA808 8 4 1024 32 12 10 In Production $0.55 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 27 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 4 0 0 9 0 0 9 0 0 0 No No 3 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 28/SSOP, 32/TQFP, 32/VQFN
ATMEGA809 8 4 1024 48 16 10 In Production $0.87 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 41 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 No 0 0 0 Yes No 0 0 No 0 5 0 0 11 0 0 8 0 0 0 No No 4 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 48/TQFP, 48/VQFN
ATMEGA4809 48 24 6144 48 16 10 In Production $1.04 8-bit AVR MCU 8 8-bit MCU Yes 256 / HEF 41 20 Yes No Programmable BOR None Yes 20 MHz, 32 kHz No Yes 1 0 1 115 Yes 0 0 0 Yes No 0 0 No 0 5 0 0 11 0 0 8 0 0 0 No No 4 1 1 0 None No 0 0 0 None No No No No Yes 1 0 0 0 No 0 No No None -40 125 1.8 5.5 No 40/PDIP, 48/TQFP, 48/VQFN

ATmega4809 8-bit High-Performance AVR® MCU

This video provides an overview of the ATmega4809 microcontroller, a new series of megaAVR® microcontrollers that were designed to create highly responsive command and control applications.