Arduino Pro Mini ATmega328P 5V

Bạn muốn sự nhỏ gọn tối đa đi kèm với chi phí tối thiểu và sức mạnh, phần cứng tương đương với Arduino Uno thì Arduino Pro Mini ATmega328P chính là sự lựa chọn tối ưu dành cho bạn, để sử dụng mạch này thì bạn sẽ cần thêm 1 Board USB-UART để giao tiếp với máy tính nạp code, thông tin thêm xin xem bằng tiếng Anh:

The Arduino Pro Mini is a small microcontroller board based on the ATmega328P-AU.(datasheet), intended for use on breadboards and when space is at a premium. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 8 analog inputs, and a 16 MHz crystal oscillator. It can be programmed with theUSB Serial adapter or other USB or RS232 to TTL serial adapter.

Summary

Microcontroller	ATmega328P-AU
Operating Voltage	5V
Input Voltage	7-9 V
Digital I/O Pins	14 (of which 6 provide PWM output)
Analog Input Pins	8 (of which 4 are broken out onto pins)
DC Current per I/O Pin	40 mA
Flash Memory	32 KB (of which 2 KB used by bootloader)
SRAM	2 KB
EEPROM	1 KB
Clock Speed	16 MHz

Programming

The Arduino Pro Mini can be programmed with the Arduino software (download). For details, see the reference and tutorials.

To program the Arduino Pro Mini, you will need a USB Serial adapter or other USB or RS232 to TTL serial adapter. See the page on getting started with the Arduino Mini for instructions.

The ATmega328 on the Arduino Mini comes preburned with a bootloader that allows you to upload new code to it without the use of an in-system-programmer. The bootloader communicates using the original STK500 protocol (reference, C header files).

You can also bypass the bootloader and program the ATmega328 with ICSP (In-Circuit Serial Programming); see the page on bootloading the Mini for information on wiring up an ICSP header to the Mini and the programmer for instructions on using a programmer to upload a sketch.

Input and Output

Each of the 14 digital pins on the Mini can be used as an input or output. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. Pins 3, 5, 6, 9, 10, and 11 can provide PWM output; for details see the analogWrite() function. If anything besides the Mini USB (or other) adapter is connected to pins 0 and 1, it will interfere with the USB communication, preventing new code from being uploaded or other communication with the computer.

The Mini has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). Inputs 0 to 3 are broken out onto pins; input 4 to 7 require soldering into the provided holes. By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and some low-level code.

More Information

To get your Arduino Pro Mini working, see this guide.

There's more information on the Arduino Pro Mini in the playground.