- PIC MCUs
- AVR MCUs
- 16-bit Pulse Width Modulation
- 24-bit Signal Measurement Timer
- Angular Timer
- Configurable Logic Cell
- Cyclic Redundancy Check
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- High Endurance Flash
- Math Accelerator
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- Peripheral Pin Select
- Temperature Indicator
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- Core Independent
- Development Tools
8-bit Development Tools
ATmega4809 Product Family
8-bit MCUs built for Real-time Control with Core Independent Peripherals
The megaAVR® 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.
The ATmega4809-XPRO Evaluation Kit is the ideal platform for rapid prototyping with the new tinyAVR and megaAVR® MCUs. The USB-powered kit features an on-board programmer/debugger that seamlessly integrates with Atmel Studio, along with touch buttons, LEDs and extension headers for quick setup. The board also has a MikroBUS™ -compatible socket, allowing you to easily add sensors, actuators or communications interfaces from Mikroelektronika’s extensive library of click boards™.
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Building Blocks for Real-Time Control
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.
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.
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.
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