Data Sheet
Table Of Contents
- Introduction
- Features
- Table of Contents
- 1. Block Diagram
- 2. Pinout
- 3. I/O Multiplexing and Considerations
- 4. Electrical Characteristics
- 4.1. Disclaimer
- 4.2. Absolute Maximum Ratings
- 4.3. General Operating Ratings
- 4.4. Power Considerations
- 4.5. Power Consumption
- 4.6. Peripherals Power Consumption
- 4.7. BOD and POR Characteristics
- 4.8. External Reset Characteristics
- 4.9. Oscillators and Clocks
- 4.10. I/O Pin Characteristics
- 4.11. USART
- 4.12. SPI
- 4.13. TWI
- 4.14. VREF
- 4.15. ADC
- 4.16. AC
- 4.17. UPDI Timing
- 4.18. Programming Time
- 5. Typical Characteristics
- 6. Ordering Information
- 7. Online Package Drawings
- 8. Package Drawings
- 9. Conventions
- 10. Data Sheet Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System Certified by DNV
- Worldwide Sales and Service
Product Identification System
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Carrier Type
AT mega 4809 - MFR
Flash size in KB
Series name
Pin count
9=48 pins (PDIP: 40 pins)
8=32 pins (SSOP: 28 pins)
Package Type
A=TQFP
M=QFN (UQFN/VQFN)
P=PDIP
X=SSOP
Temperature Range
F=-40°C to +125°C
R=Tape & Reel
AVR product family
Blank=Tube or Tray
Note: Tape and Reel identifier only appears in the catalog part number description. This identifier is
used for ordering purposes. Check with your Microchip Sales Office for package availability with the Tape
and Reel option.
Microchip Devices Code Protection Feature
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the
market today, when used in the intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of
these methods, to our knowledge, require using the Microchip products in a manner outside the
operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is
engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their
code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the
code protection features of our products. Attempts to break Microchip’s code protection feature may be a
violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software
or other copyrighted work, you may have a right to sue for relief under that Act.
Legal Notice
Information contained in this publication regarding device applications and the like is provided only for
your convenience and may be superseded by updates. It is your responsibility to ensure that your
application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY
OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS
CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE.
Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life
support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend,
indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting
ATmega809/1609/3209/4809 – 48-pin
© 2019 Microchip Technology Inc.
Datasheet Preliminary
DS40002016B-page 80