Manuais de utilizador para Arduino A000053

índice analítico

• Features

  1
• 1. Pin Configurations

  3
• 2. Overview

  3
  • 2.1 Block Diagram

    4
  • 2.2 Pin Descriptions

    5
    • 2.2.1 VCC

      5
    • 2.2.2 GND

      5
    • 2.2.3 Port B (PB7..PB0)

      5
    • 2.2.4 Port C (PC7,PC6)

      5
    • 2.2.5 Port D (PD7..PD0)

      6
    • 2.2.6 Port E (PE6,PE2)

      6
    • 2.2.7 Port F (PF7..PF4, PF1,PF0)

      6
    • 2.2.8 D-

      6
    • 2.2.9 D+

      6
    • 2.2.10 UGND

      6
    • 2.2.11 UVCC

      7
    • 2.2.12 UCAP

      7
    • 2.2.13 VBUS

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    • 2.2.14 RESET

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    • 2.2.15 XTAL1

      7
    • 2.2.16 XTAL2

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    • 2.2.17 AVCC

      7
    • 2.2.18 AREF

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• 3. About

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  • 3.1 Disclaimer

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  • 3.2 Resources

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  • 3.3 Code Examples

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  • 3.4 Data Retention

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• 4. Register Summary

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  • Note: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written.

    12
  • 2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the value of single bits can be checked by using the SBIS and SBIC instructions.

    12
  • 3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instr...

    12
  • 4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O registers as data space using LD and ST instructions, $20 must be added to these addresses. The ATmega16U4/ATmega32U4 is a complex micro...

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• 5. Instruction Set Summary

  13
• 6. Ordering Information

  16
  • 6.1 ATmega16U4

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  • 6.2 ATmega32U4

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• 7. Packaging Information

  18
  • 7.1 TQFP44

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  • 7.2 QFN44

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• 8. Errata

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  • 8.1 ATmega16U4/ATmega32U4 Rev E

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  • 8.2 ATmega16U4/ATmega32U4 Rev D

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  • 8.3 ATmega16U4/ATmega32U4 Rev C

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  • 8.4 ATmega16U4/ATmega32U4 Rev B

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  • 8.5 ATmega16U4/ATmega32U4 Rev A

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• 9. Datasheet Revision History for ATmega16U4/ATmega32U4

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  • 9.1 Rev. 7766F – 11/10

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  • 9.2 Rev. 7766E – 04/10

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  • 9.3 Rev. 7766D – 01/09

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  • 9.4 Rev. 7766C – 11/08

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  • 9.5 Rev. 7766B – 11/08

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  • 9.6 Rev. 7766A – 07/08

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