Datasheet
Table Of Contents
- Features
- 1. Ordering Information
- 2. Pinout/Block Diagram
- 3. Overview
- 4. Resources
- 5. Capacitive touch sensing
- 6. AVR CPU
- 7. Memories
- 8. Event System
- 9. System Clock and Clock options
- 9.1 Features
- 9.2 Overview
- 9.3 Clock Sources
- 9.3.1 32kHz Ultra Low Power Internal Oscillator
- 9.3.2 32.768kHz Calibrated Internal Oscillator
- 9.3.3 32.768kHz Crystal Oscillator
- 9.3.4 0.4 - 16MHz Crystal Oscillator
- 9.3.5 2MHz Run-time Calibrated Internal Oscillator
- 9.3.6 32MHz Run-time Calibrated Internal Oscillator
- 9.3.7 External Clock Sources
- 9.3.8 PLL with 1x-31x Multiplication Factor
- 10. Power Management and Sleep Modes
- 11. System Control and Reset
- 12. WDT – Watchdog Timer
- 13. Interrupts and Programmable Multilevel Interrupt Controller
- 14. I/O Ports
- 15. TC0/1 – 16-bit Timer/Counter Type 0 and 1
- 16. TC2 – Timer/Counter Type 2
- 17. AWeX – Advanced Waveform Extension
- 18. Hi-Res – High Resolution Extension
- 19. RTC – 16-bit Real-Time Counter
- 20. USB – Universal Serial Bus Interface
- 21. TWI – Two-Wire Interface
- 22. SPI – Serial Peripheral Interface
- 23. USART
- 24. IRCOM – IR Communication Module
- 25. CRC – Cyclic Redundancy Check Generator
- 26. ADC – 12-bit Analog to Digital Converter
- 27. AC – Analog Comparator
- 28. Programming and Debugging
- 29. Pinout and Pin Functions
- 30. Peripheral Module Address Map
- 31. Instruction Set Summary
- 32. Packaging information
- 33. Electrical Characteristics TBD
- 34. Typical Characteristics TBD
- 35. Errata
- 36. Datasheet Revision History
- Table of Contents
54
8493A–AVR–02/12
XMEGA C4
29.2 Alternate Pin Functions
The tables below show the primary/default function for each pin on a port in the first column, the
pin number in the second column, and then all alternate pin functions in the remaining columns.
The head row shows what peripheral that enable and use the alternate pin functions.
For better flexibility, some alternate functions also have selectable pin locations for their func-
tions, this is noted under the first table where this apply.
Table 29-1. Port A - Alternate functions
PORT A PIN # INTERRUPT
ADCA POS/
GAIN POS ADCA NEG ADCA GAINNEG ACA POS ACA NEG ACA OUT REFA
GND 60
AVCC 61
PA0 62 SYNC ADC0 ADC0 AC0 AC0 AREFA
PA1 63 SYNC ADC1 ADC1 AC1 AC1
PA2 64 SYNC/ASYNC ADC2 ADC2 AC2
PA3 1 SYNC ADC3 ADC3 AC3 AC3
PA4 2 SYNC ADC4 ADC4 AC4
PA5 3 SYNC ADC5 ADC5 AC5 AC5
PA6 4 SYNC ADC6 ADC6 AC6 AC1OUT
PA7 5 SYNC ADC7 ADC7 AC7 AC0OUT
Table 29-2. Port B - Alternate functions
PORT B PIN # INTERRUPT ADCA POS REFB
PB0 6 SYNC ADC8 AREFB
PB1 6 SYNC ADC9
PB2 8 SYNC/ASYNC ADC10
PB3 9 SYNC ADC11
PB4 10 SYNC ADC12
PB5 11 SYNC ADC13
PB6 12 SYNC ADC14
PB7 13 SYNC ADC15
GND 14
VCC 15