ATmega4809 Product Family

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

The megaAVR^® microcontrollers (MCUs) broaden the effectiveness of real-time control systems with a combination of intelligent hardware peripherals alongside the low-power capacity of the AVR core. Each of the ATmega4809, 4808, 3209 and 3208 offer individualized options for pin-counts, packages, and memory. Each includes a high-speed ADC and easy-to-configure Core Independent Peripherals, making the megaAVR family optimal for use as companion MCUs for complex microprocessor-based systems, or as standalone 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. The new 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 cost.

Getting Started

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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.

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Building Blocks for Real-Time Control

High-Speed ADC

True 10-bit resolution and conversion speeds of 115,000 samples per second (ksps) 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 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 the applications. 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 Configurable Custom Logic is a programmable logic peripheral which can be connected to the device pins, events, or other internal peripherals. This allows the user 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.

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ATmega4809 Key Attributes

Internal 20MHz oscillator
Up to 48KB of FLASH memory
Up to 16-channel, high speed 10-bit ADC
Cyclic Redundancy Check (CRC) with SCAN
16-bit Real Time Clock
Configurable Custom Logic peripheral
6-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