ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 303

• Manufacturer Part Number: ATMEGA16U2-16AU
• Description: 8-bit Microcontrollers - MCU 16K Flash
• Manufacturer: Atmel

Specifications of ATMEGA16U2-16AU

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: AVR
• Data Bus Width: 8 bit
• Program Memory Size: 16 KB
• Data Ram Size: 1.25 KB
• Data Rom Size: 512 B
• Program Memory Type: Flash
• Factory Pack Quantity: 1250

Table of Contents
7799D–AVR–11/10
1
2
3
4
5
6
7
8
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 3
Resources ................................................................................................. 6
Code Examples ........................................................................................ 6
Data Retention .......................................................................................... 6
AVR CPU Core .......................................................................................... 7
AVR Memories ........................................................................................ 16
System Clock and Clock Options ......................................................... 26
1.1Disclaimer ..................................................................................................................2
2.1Block Diagram ...........................................................................................................3
2.2Pin Descriptions .........................................................................................................4
6.1Introduction ................................................................................................................7
6.2Architectural Overview ...............................................................................................7
6.3ALU – Arithmetic Logic Unit .......................................................................................8
6.4Status Register ..........................................................................................................8
6.5General Purpose Register File ................................................................................10
6.6Stack Pointer ...........................................................................................................11
6.7Instruction Execution Timing ...................................................................................12
6.8Reset and Interrupt Handling ...................................................................................13
7.1In-System Reprogrammable Flash Program Memory .............................................16
7.2SRAM Data Memory ................................................................................................17
7.3EEPROM Data Memory ..........................................................................................18
7.4I/O Memory ..............................................................................................................19
7.5Register Description ................................................................................................20
8.1Clock Systems and their Distribution .......................................................................26
8.2Clock Switch ............................................................................................................27
8.3Clock Sources .........................................................................................................29
8.4Low Power Crystal Oscillator ...................................................................................30
8.5Full Swing Crystal Oscillator ....................................................................................32
8.6Calibrated Internal RC Oscillator .............................................................................33
8.7External Clock .........................................................................................................35
ATmega8U2/16U2/32U2
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