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
36
8493A–AVR–02/12
XMEGA C4
18. Hi-Res – High Resolution Extension
18.1 Features
• Increases waveform generator resolution up to 8x (three bits)
• Supports frequency, single-slope PWM, and dual-slope PWM generation
• Supports the AWeX when this is used for the same timer/counter
18.2 Overview
The high-resolution (hi-res) extension can be used to increase the resolution of the waveform
generation output from a timer/counter by four or eight. It can be used for a timer/counter doing
frequency, single-slope PWM, or dual-slope PWM generation. It can also be used with the
AWeX if this is used for the same timer/counter.
The hi-res extension uses the peripheral 4x clock (Clk
PER4
). The system clock prescalers must
be configured so the peripheral 4x clock frequency is four times higher than the peripheral and
CPU clock frequency when the hi-res extension is enabled.
There is one hi-res extensions that can be enabled for timer/counters pair on PORTC. The nota-
tion of this is HIRESC.