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Product attributes Property Value
Manufacturer Microchip Technology
Product Series megaAVR® 0, Functional Safety (FuSa)
Packaging Cut Tape (CT) | NULL
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 41
Program Memory Size 8KB (8K x 8)
Program Memory Type FLASH
EEPROM Size 256 x 8
RAM Size 1K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 16x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-TQFP (7x7)
Package / Case 48-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA809 is an entry-level 8-bit AVR MCU with 8KB flash and 20MHz speed. It operates from 1.8V to 5.5V in a 48-TQFP package. With PWM and safety features, it is a cost-effective choice for simple control tasks.

  • 8KB flash for small, focused firmware.
  • 48-TQFP offers abundant I/O for peripheral interfaces.
  • 20MHz performance with low power consumption.
  • Integrated PWM and WDT reduce external components.

Motor Drivers

PWM outputs control small DC motors in toys and pumps.

Human-Machine Interface

48-pin package provides enough GPIO for keypads and LEDs.

Battery Management

Low power consumption extends life in BMS monitoring.

Simple Controllers

8KB flash is sufficient for basic logic and state machines.

Sensor Nodes

1KB RAM handles small data packets from temperature/pressure sensors.

Educational Kits

Easy-to-use AVR architecture for learning embedded systems.

Q: What is the flash size?
A: 8KB (8K x 8) for basic applications.
Q: What is the package?
A: 48-TQFP with more I/O pins.
Q: Does it support PWM?
A: Yes, with multiple PWM channels.
Q: What is the voltage range?
A: 1.8V to 5.5V, compatible with common logic.
Base Product Number : ATMEGA809
-40C to 85C 20MHz 48-TQFP 8-bit MCU 8KB Flash ATMEGA AVR BOR Educational PWM Simple Control
Q: What is the flash size?
A: 8KB (8K x 8) for basic applications.
Q: What is the package?
A: 48-TQFP with more I/O pins.
Q: Does it support PWM?
A: Yes, with multiple PWM channels.
Q: What is the voltage range?
A: 1.8V to 5.5V, compatible with common logic.