EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Microcontrollers  AVR    ATMEGA4808-MU
ATMEGA4808-MU

MCHPATMEGA4808-MU

Microchip
Same megaAVR family with similar peripherals for designs needing small differences in pin count or feature set
Active14,218 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATMEGA4808-MU is an 8-bit AVR RISC microcontroller featuring 48KB of Flash and 6KB of RAM in a compact 32-pin VQFN package. It utilizes the latest megaAVR 0-series architecture, offering core-independent peripherals and a flexible Event System to reduce CPU overhead in real-time control tasks.

Why Choose This Part

This MCU provides a robust 5V-tolerant design with high current drive capability of 40mA per IO pin. The inclusion of hardware-based safety features like a CRC scan and a windowed watchdog timer makes it suitable for reliable long-term installations.

Applications

Industrial Control Nodes
Utilizing Configurable Custom Logic (CCL) and the Event System for low-latency response to sensor inputs without CPU intervention.
Battery-Powered Handhelds
Taking advantage of the 0.1 uA shutdown current and 0.7 uA standby modes for extended battery life.
Smart Home Sensors
Using integrated UART, SPI, and I2C/TWI interfaces to manage wireless modules and environment sensors.
Peripheral Hubs
Acting as a dedicated IO expander or subsystem controller in larger embedded systems using its 27 IO pins.

Key Specifications

Speed 20MHz
RAM Size 6K x 8
Core Size 8-Bit
EEPROM Size 256 x 8
Peripherals Brown-out Detect/Reset, POR, WDT
Connectivity I2C, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 27
Core Processor AVR
Package / Case 32-VFQFN Exposed Pad
Data Converters A/D 12x10b
Oscillator Type Internal
Program Memory Size 48KB (24K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 32-VQFN (5x5)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Developers can use the Microchip Curiosity Nano (AC164162) for rapid prototyping or the Atmel-ICE for hardware debugging via the UPDI interface. Software development is supported in Microchip Studio or MPLAB X IDE using the XC8 compiler and the AVR Core Peripheral Library.

Also Consider

SAM D21G MCHPMicrochip - Offers a transition to 32-bit ARM Cortex-M0+ architecture if higher processing throughput is required in a similar 32-pin VQFN footprint.

Categories

Microcontrollers > AVR
The 2026 Embedded Online Conference