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. DMAC – Direct Memory Access Controller
- 9. Event System
- 10. System Clock and Clock options
- 10.1 Features
- 10.2 Overview
- 10.3 Clock Sources
- 10.3.1 32kHz Ultra Low Power Internal Oscillator
- 10.3.2 32.768kHz Calibrated Internal Oscillator
- 10.3.3 32.768kHz Crystal Oscillator
- 10.3.4 0.4 - 16MHz Crystal Oscillator
- 10.3.5 2MHz Run-time Calibrated Internal Oscillator
- 10.3.6 32MHz Run-time Calibrated Internal Oscillator
- 10.3.7 External Clock Sources
- 10.3.8 PLL with 1x-31x Multiplication Factor
- 11. Power Management and Sleep Modes
- 12. System Control and Reset
- 13. WDT – Watchdog Timer
- 14. Interrupts and Programmable Multilevel Interrupt Controller
- 15. I/O Ports
- 16. TC0/1 – 16-bit Timer/Counter Type 0 and 1
- 17. TC2 - Timer/Counter Type 2
- 18. AWeX – Advanced Waveform Extension
- 19. Hi-Res – High Resolution Extension
- 20. RTC – 16-bit Real-Time Counter
- 21. USB – Universal Serial Bus Interface
- 22. TWI – Two-Wire Interface
- 23. SPI – Serial Peripheral Interface
- 24. USART
- 25. IRCOM – IR Communication Module
- 26. AES and DES Crypto Engine
- 27. CRC – Cyclic Redundancy Check Generator
- 28. ADC – 12-bit Analog to Digital Converter
- 29. DAC – 12-bit Digital to Analog Converter
- 30. AC – Analog Comparator
- 31. Programming and Debugging
- 32. Pinout and Pin Functions
- 33. Peripheral Module Address Map
- 34. Instruction Set Summary
- 35. Packaging information
- 36. Electrical Characteristics
- 36.1 ATxmega16A4U
- 36.1.1 Absolute Maximum Ratings
- 36.1.2 General Operating Ratings
- 36.1.3 Current consumption
- 36.1.4 Wake-up time from sleep modes
- 36.1.5 I/O Pin Characteristics
- 36.1.6 ADC characteristics
- 36.1.7 DAC Characteristics
- 36.1.8 Analog Comparator Characteristics
- 36.1.9 Bandgap and Internal 1.0V Reference Characteristics
- 36.1.10 Brownout Detection Characteristics
- 36.1.11 External Reset Characteristics
- 36.1.12 Power-on Reset Characteristics
- 36.1.13 Flash and EEPROM Memory Characteristics
- 36.1.14 Clock and Oscillator Characteristics
- 36.1.14.1 Calibrated 32.768kHz Internal Oscillator characteristics
- 36.1.14.2 Calibrated 2MHz RC Internal Oscillator characteristics
- 36.1.14.3 Calibrated and tunable 32MHz internal oscillator characteristics
- 36.1.14.4 32kHz Internal ULP Oscillator characteristics
- 36.1.14.5 Internal Phase Locked Loop (PLL) characteristics
- 36.1.14.6 External clock characteristics
- 36.1.14.7 External 16MHz crystal oscillator and XOSC characteristic
- 36.1.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
- 36.1.15 SPI Characteristics
- 36.1.16 Two-Wire Interface Characteristics
- 36.2 ATxmega32A4U
- 36.2.1 Absolute Maximum Ratings
- 36.2.2 General Operating Ratings
- 36.2.3 Current consumption
- 36.2.4 Wake-up time from sleep modes
- 36.2.5 I/O Pin Characteristics
- 36.2.6 ADC characteristics
- 36.2.7 DAC Characteristics
- 36.2.8 Analog Comparator Characteristics
- 36.2.9 Bandgap and Internal 1.0V Reference Characteristics
- 36.2.10 Brownout Detection Characteristics
- 36.2.11 External Reset Characteristics
- 36.2.12 Power-on Reset Characteristics
- 36.2.13 Flash and EEPROM Memory Characteristics
- 36.2.14 Clock and Oscillator Characteristics
- 36.2.14.1 Calibrated 32.768kHz Internal Oscillator characteristics
- 36.2.14.2 Calibrated 2MHz RC Internal Oscillator characteristics
- 36.2.14.3 Calibrated and tunable 32MHz internal oscillator characteristics
- 36.2.14.4 32kHz Internal ULP Oscillator characteristics
- 36.2.14.5 Internal Phase Locked Loop (PLL) characteristics
- 36.2.14.6 External clock characteristics
- 36.2.14.7 External 16MHz crystal oscillator and XOSC characteristic
- 36.2.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
- 36.2.15 SPI Characteristics
- 36.2.16 Two-Wire Interface Characteristics
- 36.3 ATxmega64A4U
- 36.3.1 Absolute Maximum Ratings
- 36.3.2 General Operating Ratings
- 36.3.3 Current consumption
- 36.3.4 Wake-up time from sleep modes
- 36.3.5 I/O Pin Characteristics
- 36.3.6 ADC characteristics
- 36.3.7 DAC Characteristics
- 36.3.8 Analog Comparator Characteristics
- 36.3.9 Bandgap and Internal 1.0V Reference Characteristics
- 36.3.10 Brownout Detection Characteristics
- 36.3.11 External Reset Characteristics
- 36.3.12 Power-on Reset Characteristics
- 36.3.13 Flash and EEPROM Memory Characteristics
- 36.3.14 Clock and Oscillator Characteristics
- 36.3.14.1 Calibrated 32.768kHz Internal Oscillator characteristics
- 36.3.14.2 Calibrated 2MHz RC Internal Oscillator characteristics
- 36.3.14.3 Calibrated and tunable 32MHz internal oscillator characteristics
- 36.3.14.4 32kHz Internal ULP Oscillator characteristics
- 36.3.14.5 Internal Phase Locked Loop (PLL) characteristics
- 36.3.14.6 External clock characteristics
- 36.3.14.7 External 16MHz crystal oscillator and XOSC characteristic
- 36.3.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
- 36.3.15 SPI Characteristics
- 36.3.16 Two-Wire Interface Characteristics
- 36.4 ATxmega128A4U
- 36.4.1 Absolute Maximum Ratings
- 36.4.2 General Operating Ratings
- 36.4.3 Current consumption
- 36.4.4 Wake-up time from sleep modes
- 36.4.5 I/O Pin Characteristics
- 36.4.6 ADC characteristics
- 36.4.7 DAC Characteristics
- 36.4.8 Analog Comparator Characteristics
- 36.4.9 Bandgap and Internal 1.0V Reference Characteristics
- 36.4.10 Brownout Detection Characteristics
- 36.4.11 External Reset Characteristics
- 36.4.12 Power-on Reset Characteristics
- 36.4.13 Flash and EEPROM Memory Characteristics
- 36.4.14 Clock and Oscillator Characteristics
- 36.4.14.1 Calibrated 32.768kHz Internal Oscillator characteristics
- 36.4.14.2 Calibrated 2MHz RC Internal Oscillator characteristics
- 36.4.14.3 Calibrated and tunable 32MHz internal oscillator characteristics
- 36.4.14.4 32kHz Internal ULP Oscillator characteristics
- 36.4.14.5 Internal Phase Locked Loop (PLL) characteristics
- 36.4.14.6 External clock characteristics
- 36.4.14.7 External 16MHz crystal oscillator and XOSC characteristic
- 36.4.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
- 36.4.15 SPI Characteristics
- 36.4.16 Two-Wire Interface Characteristics
- 36.1 ATxmega16A4U
- 37. Typical Characteristics
- 37.1 ATxmega16A4U
- 37.1.1 Current consumption
- 37.1.2 I/O Pin Characteristics
- 37.1.3 ADC Characteristics
- 37.1.4 DAC Characteristics
- 37.1.5 Analog Comparator Characteristics
- 37.1.6 Internal 1.0V reference Characteristics
- 37.1.7 BOD Characteristics
- 37.1.8 External Reset Characteristics
- 37.1.9 Power-on Reset Characteristics
- 37.1.10 Oscillator Characteristics
- 37.1.11 Two-Wire Interface characteristics
- 37.1.12 PDI characteristics
- 37.2 ATxmega32A4U
- 37.2.1 Current consumption
- 37.2.2 I/O Pin Characteristics
- 37.2.3 ADC Characteristics
- 37.2.4 DAC Characteristics
- 37.2.5 Analog Comparator Characteristics
- 37.2.6 Internal 1.0V reference Characteristics
- 37.2.7 BOD Characteristics
- 37.2.8 External Reset Characteristics
- 37.2.9 Power-on Reset Characteristics
- 37.2.10 Oscillator Characteristics
- 37.2.11 Two-Wire Interface characteristics
- 37.2.12 PDI characteristics
- 37.3 ATxmega64A4U
- 37.3.1 Current consumption
- 37.3.2 I/O Pin Characteristics
- 37.3.3 ADC Characteristics
- 37.3.4 DAC Characteristics
- 37.3.5 Analog Comparator Characteristics
- 37.3.6 Internal 1.0V reference Characteristics
- 37.3.7 BOD Characteristics
- 37.3.8 External Reset Characteristics
- 37.3.9 Power-on Reset Characteristics
- 37.3.10 Oscillator Characteristics
- 37.3.11 Two-Wire Interface characteristics
- 37.3.12 PDI characteristics
- 37.4 ATxmega128A4U
- 37.4.1 Current consumption
- 37.4.2 I/O Pin Characteristics
- 37.4.3 ADC Characteristics
- 37.4.4 DAC Characteristics
- 37.4.5 Analog Comparator Characteristics
- 37.4.6 Internal 1.0V reference Characteristics
- 37.4.7 BOD Characteristics
- 37.4.8 External Reset Characteristics
- 37.4.9 Power-on Reset Characteristics
- 37.4.10 Oscillator Characteristics
- 37.4.11 Two-Wire Interface characteristics
- 37.4.12 PDI characteristics
- 37.1 ATxmega16A4U
- 38. Errata
- 39. Datasheet Revision History
- Table of Contents
132
XMEGA A4U [DATASHEET]
Atmel-8387H-AVR-ATxmega16A4U-34A4U-64A4U-128A4U-Datasheet_09/2014
Note: 1. Numbers for negative impedance are not tested in production but guaranteed from design and characterization
36.3.14.8 External 32.768kHz crystal oscillator and TOSC characteristics
Table 36-94. External 32.768kHz crystal oscillator and TOSC characteristics.
Note: 1. See Figure 36-18 for definition.
Figure 36-18. TOSC input capacitance.
The parasitic capacitance between the TOSC pins is C
L1
+ C
L2
in series as seen from the crystal when oscillating
without external capacitors.
ESR SF = Safety factor min(R
Q
)/SF kΩ
C
XTAL1
Parasitic capacitance
XTAL1 pin
5.60 pF
C
XTAL2
Parasitic capacitance
XTAL2 pin
7.62 pF
C
LOAD
Parasitic capacitance
load
3.23 pF
Symbol Parameter Condition Min. Typ. Max. Units
Symbol Parameter Condition Min. Typ. Max. Units
ESR/R1
Recommended crystal equivalent
series resistance (ESR)
Crystal load capacitance 6.5pF 60
kΩ
Crystal load capacitance 9.0pF 35
C
TOSC1
Parasitic capacitance TOSC1 pin
5.4 pF
Alternate TOSC location 4.0
C
TOSC2
Parasitic capacitance TOSC2 pin
7.1 pF
Alternate TOSC location 4.0
Recommended safety factor
capacitance load matched to
crystal specification
3
C
L1
C
L2
2CS
O
T
1
CS
O
T
Device internal
External
32.768kHz crystal