Microchip Technology ATMEGA4809-MFR

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series megaAVR® 0, Functional Safety (FuSa)
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, WDT
Number of I/O 41
Program Memory Size 48KB (24K x 16)
Program Memory Type FLASH
EEPROM Size 256 x 8
RAM Size 6K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 16x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-UQFN (6x6)
Package / Case 48-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA4809-MFR is a high-temperature AVR 8-bit microcontroller in a 48-UFQFN package. It features 48KB flash, 6KB SRAM, and a 20MHz core, operating from 1.8V to 5.5V. Designed for extended temperature ranges, it is a robust choice for automotive and industrial control systems.

  • Extended Temperature Range (-40°C to 125°C): Reliable in harsh automotive and industrial environments.
  • Large Memory (48KB Flash, 6KB RAM): Supports complex applications without external memory.
  • Wide Voltage Range (1.8V-5.5V): Flexible power supply design for mixed-voltage systems.
  • AVR Core Efficiency: Single-cycle instructions and 20MHz speed for responsive control.

Automotive Body Control Modules

The 125°C rating and robust brown-out detection make it reliable for in-cabin lighting and window control.

Industrial Motor Drives

With 20MHz speed and multiple PWM channels, it can control three-phase induction motors with sensorless algorithms.

Smart Grid Meters

Its 48KB flash and 6KB RAM support complex metering firmware for energy monitoring.

Robotics Controllers

The rich GPIO and timer set allow precise servo control and sensor fusion in educational robots.

HVAC Zone Controllers

Wide voltage range and high temperature tolerance suit rooftop HVAC units exposed to harsh conditions.

Q: What is the maximum operating temperature?
A: This version is rated for -40°C to 125°C, suitable for automotive and industrial environments.
Q: What is the core architecture?
A: It uses the AVR 8-bit core running at up to 20MHz.
Q: How much program memory does it have?
A: It provides 48KB of flash memory organized as 24K x 16 bits.
Q: What package is this part?
A: It is in a 48-UFQFN package with exposed pad for thermal dissipation.
Base Product Number : ATMEGA4809
20MHz 48KB flash 8-bit MCU automotive AVR high temperature industrial Microchip UFQFN-48
Q: What is the maximum operating temperature?
A: This version is rated for -40°C to 125°C, suitable for automotive and industrial environments.
Q: What is the core architecture?
A: It uses the AVR 8-bit core running at up to 20MHz.
Q: How much program memory does it have?
A: It provides 48KB of flash memory organized as 24K x 16 bits.
Q: What package is this part?
A: It is in a 48-UFQFN package with exposed pad for thermal dissipation.