ARDUINOuno原理与资料简介(10)
2023-03-16 来源:你乐谷
The Uno board contains a trace that can be cut to disable the auto-reset. The pads on either side of the trace can be soldered together to re-enable it. Its labeled RESET-EN. You may also be able to disable the auto-reset by connecting a 110 ohm resistor from 5V to the reset line; seethis forum threadfor details.
Revisions
Revision 3 of the board has the following new features:
1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Arduino Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
Stronger RESET circuit.
Atmega 16U2 replace the 8U2.
ATmega168/328P-Arduino Pin Mapping
Note that this chart is for the DIP-package chip. The Arduino Mini is based upon a smaller physical IC package that includes two extra ADC pins, which are not available in the DIP-package Arduino implementations.
Arduino UNO硬件介绍
这一章会对照开发板简单讲解一下硬件原理图，如果你想深入了解硬件原理图，这里附上官网的PDF版。下图是一张原理图和开发板的概览图：
Revisions
Revision 3 of the board has the following new features:
1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Arduino Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
Stronger RESET circuit.
Atmega 16U2 replace the 8U2.
ATmega168/328P-Arduino Pin Mapping
Note that this chart is for the DIP-package chip. The Arduino Mini is based upon a smaller physical IC package that includes two extra ADC pins, which are not available in the DIP-package Arduino implementations.
Arduino UNO硬件介绍
这一章会对照开发板简单讲解一下硬件原理图，如果你想深入了解硬件原理图，这里附上官网的PDF版。下图是一张原理图和开发板的概览图：
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