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

Figure 8-1. Event system overview and connected peripherals.

The event routing network consists of four software-configurable multiplexers that control how

events are routed and used. These are called event channels, and allow for up to four parallel

event routing configurations. The maximum routing latency is two peripheral clock cycles. The

event system works in both active mode and idle sleep mode.

Timer /

Counters

USB

ADC

Real Time

Counter

Port pins

CPU /

Software

IRCOM

Event Routing Network

Event

System

Controller

clk

PER

Prescaler