Datasheet ATmega3209, ATmega4809 - 48-pin (Microchip) - 9

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ATmega3209/4809 – 48-pin Data Sheet I/O Multiplexing and Considerations QFN48/ Pin name (1,2) Special ADC0 AC0 USARTn SPI0 TWI0 TCA0 TCBn Other CCL-LUTn TQFP48
38 PF4 AIN14 2,TxD(3) 0-WO4(3) 0-WO(3) 39 PF5 AIN15 2,RxD(3) 0-WO5(3) 1-WO(3) 40 PF6 RESET 2,XCK(3) 3-OUT(3) 41 UPDI 42 VDD 43 GND
Note: 
1. Pin names are of type Pxn, with x being the PORT instance (A,B,C, ...) and n the pin number. Notation for signals is PORTx_PINn. All pins can be used as event input. 2. All pins can be used for external interrupt, where pins Px2 and Px6 of each port have full asynchronous detection. 3. Alternate pin positions. For selecting the alternate positions, refer to the PORTMUX documentation. © 2018 Microchip Technology Inc.
Datasheet Preliminary
DS40002016A-page 9 Document Outline Introduction Features Table of Contents 1. Ordering Information 2. Block Diagram 3. Pinout 3.1. 48-pin QFN/TQFP 4. I/O Multiplexing and Considerations 4.1. Multiplexed Signals 5. Electrical Characteristics 5.1. Absolute Maximum Ratings 5.2. General Operating Ratings 5.3. Power Considerations 5.4. Power Consumption 5.5. Peripherals Power Consumption 5.6. BOD and POR Characteristics 5.7. External Reset Characteristics 5.8. Oscillators and Clocks 5.9. I/O Pin Characteristics 5.10. VREF 5.11. ADC 5.11.1. Internal Reference Characteristics 5.11.2. External Reference Characteristics 5.12. AC 5.13. UPDI Timing 6. Typical Characteristics 6.1. Power Consumption 6.1.1. Supply Currents in Active Mode 6.1.2. Supply Currents in Idle Mode 6.1.3. Supply Currents in Power-Down Mode 6.1.4. Supply Currents in Standby Mode 6.1.5. Power on Supply Currents 6.2. GPIO 6.3. VREF Characteristics 6.4. BOD Characteristics 6.5. ADC Characteristics 6.6. AC Characteristics 6.7. OSC20M Characteristics 6.8. OSCULP32K Characteristics 7. Package Drawings 7.1. 48 pin TQFP 8. Conventions 8.1. Memory Size and Type 8.2. Frequency and Time 9. Data Sheet Revision History 9.1. Rev. A - 02/2018 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