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ATMEGA4808-AFR

MCHPATMEGA4808-AFR

Microchip Technology
AVR megaAVR® 0, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 48KB (48K x 8) FLASH 32-TQFP (7x7)
Active6,857 in stock
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Overview

The ATMEGA4808-AFR is an 8-bit microcontroller featuring the AVRxt core with a hardware multiplier, running at speeds up to 20MHz. Part of the megaAVR 0-series, it is specifically designed for functional safety (FuSa) applications and features Core Independent Peripherals that reduce CPU overhead. With 48KB of Flash and 6KB of SRAM in a 32-TQFP package, it balances memory capacity with a compact footprint.

Why Choose This Part

This MCU offers a high SRAM-to-Flash ratio (6KB SRAM for 48KB Flash), which is beneficial for data-heavy 8-bit applications. It features an Event System and Configurable Custom Logic (CCL) that allow complex tasks to be handled in hardware, significantly reducing power consumption and software complexity.

Applications

Industrial Safety Controllers
Utilizes integrated functional safety features and hardware-based monitoring to manage safety-critical tasks in industrial environments.
Automotive Sensor Interface
Ideal for localized sensor processing where high-temperature data retention (40 years at 55C) and reliability are required.
Distributed Control Systems
The Event System allows for core-independent signaling between peripherals, enabling predictable and low-latency responses without CPU intervention.
Home Appliance Control
Manages user interfaces and motor control logic using the Configurable Custom Logic (CCL) to replace external glue logic.

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-TQFP
Data Converters A/D 12x10b
Oscillator Type Internal
Program Memory Size 48KB (48K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 32-TQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Developers can use the MPLAB X IDE or Microchip Studio for firmware development, utilizing the XC8 compiler. Hardware programming and debugging are performed via the single-pin Unified Program Debug Interface (UPDI). Evaluation can be accelerated using the Curiosity Nano platform or similar AVR-0 series development boards.

Part of ATmega family » ATMEGA4808

ATMEGA4808 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number I/O Pins Package ADC/DAC Flash Temp Range Stock
ATMEGA4808-AFR (this part) 27 TQFP-32 A/D 12x10b 48KB -40degC ~ 125degC .. 6,857
ATMEGA4808-MU (Microchip) 27 VFQFN-32 A/D 12x10b 48KB -40degC ~ 85degC (.. 14,218
ATMEGA4808-MFR 23 VFQFN-32 A/D 12x10b 48KB -40degC ~ 125degC .. 12,843
ATMEGA4808-XFR 23 SSOP-28 A/D 8x10b 48KB -40degC ~ 125degC .. 4,034
ATMEGA4808-AUR 27 TQFP-32 A/D 12x10b 48KB -40degC ~ 85degC (.. 2,034
ATMEGA4808-AF 27 TQFP-32 A/D 12x10b 48KB -40degC ~ 125degC .. 601
ATMEGA4808-MF 23 VFQFN-32 A/D 12x10b 48KB -40degC ~ 125degC .. 266

Also Consider

ATmega4809 MCHPMicrochip Technology - Provides additional I/O pins (up to 41) in a 48-pin package while maintaining the same core and memory specifications.
ATtiny3217 MCHPMicrochip Technology - A smaller, lower pin-count alternative from the tinyAVR 1-series with similar modern peripheral sets like CCL and Event System.