Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller VQFN 44 (7x7) 8/16-Bit 32 MHz I/O number 34

Table Of Contents

Features
1. Ordering Information
2. Pinout/Block Diagram
3. Overview
- 3.1 Block Diagram
4. Resources
- 4.1 Recommended reading
5. Capacitive touch sensing
6. AVR CPU
- 6.1 Features
- 6.2 Overview
- 6.3 Architectural Overview
- 6.4 ALU - Arithmetic Logic Unit
  - 6.4.1 Hardware Multiplier
- 6.5 Program Flow
- 6.6 Status Register
- 6.7 Stack and Stack Pointer
- 6.8 Register File
7. Memories
- 7.1 Features
- 7.2 Overview
- 7.3 Flash Program Memory
- 7.4 Fuses and Lock bits
- 7.5 Data Memory
- 7.6 EEPROM
- 7.7 I/O Memory
  - 7.7.1 General Purpose I/O Registers
- 7.8 Memory Timing
- 7.9 Device ID and Revision
- 7.10 I/O Memory Protection
- 7.11 Flash and EEPROM Page Size
8. Event System
- 8.1 Features
- 8.2 Overview
9. System Clock and Clock options
- 9.1 Features
- 9.2 Overview
- 9.3 Clock Sources
10. Power Management and Sleep Modes
- 10.1 Features
- 10.2 Overview
- 10.3 Sleep Modes
11. System Control and Reset
- 11.1 Features
- 11.2 Overview
- 11.3 Reset Sequence
- 11.4 Reset Sources
12. WDT – Watchdog Timer
- 12.1 Features
- 12.2 Overview
13. Interrupts and Programmable Multilevel Interrupt Controller
- 13.1 Features
- 13.2 Overview
- 13.3 Interrupt vectors
14. I/O Ports
- 14.1 Features
- 14.2 Overview
- 14.3 Output Driver
- 14.4 Input sensing
- 14.5 Alternate Port Functions
15. TC0/1 – 16-bit Timer/Counter Type 0 and 1
- 15.1 Features
- 15.2 Overview
16. TC2 – Timer/Counter Type 2
- 16.1 Features
- 16.2 Overview
17. AWeX – Advanced Waveform Extension
- 17.1 Features
- 17.2 Overview
18. Hi-Res – High Resolution Extension
- 18.1 Features
- 18.2 Overview
19. RTC – 16-bit Real-Time Counter
- 19.1 Features
- 19.2 Overview
20. USB – Universal Serial Bus Interface
- 20.1 Features
- 20.2 Overview
21. TWI – Two-Wire Interface
- 21.1 Features
- 21.2 Overview
22. SPI – Serial Peripheral Interface
- 22.1 Features
- 22.2 Overview
23. USART
- 23.1 Features
- 23.2 Overview
24. IRCOM – IR Communication Module
- 24.1 Features
- 24.2 Overview
25. CRC – Cyclic Redundancy Check Generator
- 25.1 Features
- 25.2 Overview
26. ADC – 12-bit Analog to Digital Converter
- 26.1 Features
- 26.2 Overview
27. AC – Analog Comparator
- 27.1 Features
- 27.2 Overview
28. Programming and Debugging
- 28.1 Features
- 28.2 Overview
29. Pinout and Pin Functions
- 29.1 Alternate Pin Function Description
- 29.2 Alternate Pin Functions
30. Peripheral Module Address Map
31. Instruction Set Summary
32. Packaging information
- 32.1 64A
- 32.2 64M2
33. Electrical Characteristics TBD
34. Typical Characteristics TBD
35. Errata
- 35.1 ATxmega32C4
  - 35.1.1 rev. H
- 35.2 ATxmega16C4
  - 35.2.1 rev. H
36. Datasheet Revision History
- 36.1 8493A – 02/12
Table of Contents

8493A–AVR–02/12

XMEGA C4

24. IRCOM – IR Communication Module

24.1 Features

• Pulse modulation/demodulation for infrared communication

• IrDA compatible for baud rates up to 115.2Kbps

• Selectable pulse modulation scheme

– 3/16 of the baud rate period

– Fixed pulse period, 8-bit programmable

– Pulse modulation disabled

• Built-in filtering

• Can be connected to and used by any USART

24.2 Overview

Atmel AVR XMEGA devices contain an infrared communication module (IRCOM) that is IrDA

compatible for baud rates up to 115.2Kbps. It can be connected to any USART to enable infra-

red pulse encoding/decoding for that USART.