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Product attributes Property Value
Manufacturer Microchip Technology
Product Series megaAVR® 0, Functional Safety (FuSa)
Packaging Tube |
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 34
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 Through Hole
Supplier Device Package 40-PDIP
Package / Case 40-DIP (0.600", 15.24mm)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA4809-PF is a high-performance 8-bit AVR microcontroller in a 40-pin DIP package. It delivers 20MHz operation with 48KB Flash and 6KB SRAM, supporting complex control loops and data logging. Its 1.8V to 5.5V supply range and industrial temperature rating make it a versatile choice for embedded systems requiring robust I/O and peripheral integration.

  • Extended Temperature Range: -40°C to 125°C operation ensures functionality in extreme industrial and automotive environments.
  • Wide Voltage Flexibility: 1.8V-5.5V supply allows direct battery or regulated 3.3V/5V logic without extra level shifters.
  • High Integration: Built-in WDT, POR, and Brown-out Reset reduce external component count and improve system reliability.
  • Through-Hole Package: 40-DIP simplifies manual assembly and prototyping, ideal for low-volume production.

Industrial Automation Controllers

The ATMEGA4809-PF's 20MHz AVR core and 48KB Flash provide ample processing for PLC logic and sensor interfacing, while the -40°C to 125°C range ensures reliability in harsh factory environments.

Automotive Aftermarket ECUs

With a wide 1.8V-5.5V supply and robust WDT/Brown-out detection, this MCU handles voltage fluctuations in 12V automotive systems, making it suitable for engine control modules and body electronics.

Smart Sensor Nodes

Its 6KB SRAM and PWM channels enable efficient data aggregation and signal conditioning for temperature, pressure, or flow sensors in IoT gateways.

Portable Medical Devices

The low-power AVR architecture, combined with 5.5V operation, supports battery-powered diagnostic tools requiring long shelf life and stable operation.

HVAC Control Boards

Multiple PWM outputs and a 40-pin DIP package simplify driving relays and triacs for compressor and fan control, with the WDT preventing system lockups.

Robotics Kits

The through-hole DIP package is breadboard-friendly, enabling rapid prototyping of motor controllers and servo drivers for educational robots.

Q: What is the maximum operating frequency of the ATMEGA4809-PF?
A: The ATMEGA4809-PF operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
Q: What package is the ATMEGA4809-PF available in?
A: It comes in a 40-pin DIP package (0.600", 15.24mm), ideal for through-hole prototyping.
Q: Does the ATMEGA4809-PF include a watchdog timer?
A: Yes, it features a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.
Q: What is the program memory size of this MCU?
A: It has 48KB of Flash program memory (24K x 16) and 6KB of SRAM.
Q: What temperature range does this device support?
A: The operating temperature range is -40°C to 125°C (TA), suitable for industrial applications.
Base Product Number : ATMEGA4809
20MHz 48KB Flash 6KB SRAM 8-bit MCU automotive AVR DIP-40 industrial PWM through-hole WDT
Q: What is the maximum operating frequency of the ATMEGA4809-PF?
A: The ATMEGA4809-PF operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
Q: What package is the ATMEGA4809-PF available in?
A: It comes in a 40-pin DIP package (0.600", 15.24mm), ideal for through-hole prototyping.
Q: Does the ATMEGA4809-PF include a watchdog timer?
A: Yes, it features a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.
Q: What is the program memory size of this MCU?
A: It has 48KB of Flash program memory (24K x 16) and 6KB of SRAM.
Q: What temperature range does this device support?
A: The operating temperature range is -40°C to 125°C (TA), suitable for industrial applications.