DC Motor Control Options

Looking at the datasheet of this component, can you group together pins by their functions? for example for Power, 3v3, gnd_1 gnd_2 etc NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function

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I grouped every current Arduino Mega2560 terminal into one primary function group only, using the datasheet pin functions and avoiding duplicate pin assignments. Full grouping is in the Arduino Mega2560 Pin Function Groups project file.

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Arduino Mega2560 Pin Function Groups

Source: Arduino Mega 2560 Rev3 / A000067 datasheet URL set on this project.

Grouping rule used

Each terminal is assigned to exactly one primary functional group. Where a physical pin has multiple functions, I grouped it by the most specific/common usage called out in the datasheet and did not repeat it in another group.

For example:

Pins 0, 1, 14–19 are grouped under UART, not general Digital I/O.
Pins 20 and 21 are grouped under I2C/TWI, not External Interrupts or general Digital I/O.
Pins 50–53 are grouped under SPI, not general Digital I/O.
PWM-capable digital pins are grouped under PWM only if they are not already claimed by UART/I2C/SPI.
Pin 13 is grouped under LED/PWM because the datasheet specifically calls out the built-in LED on D13.
Duplicate shield-header aliases SDA and SCL are kept as separate physical terminals from digital pins 20 and 21 because this project contains both terminals.

Power / Reference

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Notes
VIN	Power	Power	Power In	External input voltage to the board when using an external supply.
+5V_1	Power	5V	Power Out	Regulated 5 V rail.
+5V_2	Power	5V	Power Out	Regulated 5 V rail.
+5V_3	Power	5V	Power Out	Regulated 5 V rail.
+3V3	Power	3V3	Power Out	3.3 V output from onboard regulator; datasheet states 50 mA max draw.
IOREF	Power	IOREF	Power Out	Logic-voltage reference for shields.
AREF	Analog	AREF	Passive	Analog reference input for analog inputs.

Ground

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Notes
GND1	Ground	Ground	Ground	Ground pin.
GND2	Ground	Ground	Ground	Ground pin.
GND3	Ground	Ground	Ground	Ground pin.
GND4	Ground	Ground	Ground	Ground pin.
GND5	Ground	Ground	Ground	Ground pin.

Control / Reserved

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Notes
RESET	Control	RESET	Input	Bring LOW to reset the microcontroller.
NC	No Connect	NC	Not Connected	Rev3 reserved / not connected pin near RESET/IOREF.

UART / Serial

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Datasheet function
0	Communication	UART0	Input	Serial RX; also connected to ATmega16U2 USB-to-TTL serial chip.
1	Communication	UART0	Output	Serial TX; also connected to ATmega16U2 USB-to-TTL serial chip.
19	Communication	UART1	Input	Serial1 RX.
18	Communication	UART1	Output	Serial1 TX.
17	Communication	UART2	Input	Serial2 RX.
16	Communication	UART2	Output	Serial2 TX.
15	Communication	UART3	Input	Serial3 RX.
14	Communication	UART3	Output	Serial3 TX.

I2C / TWI

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Datasheet function
20	Communication	I2C	Bi-Directional	SDA / TWI data; also external interrupt 3.
21	Communication	I2C	Bi-Directional	SCL / TWI clock; also external interrupt 2.
SDA	Communication	I2C	Bi-Directional	Rev3 SDA header alias near AREF.
SCL	Communication	I2C	Bi-Directional	Rev3 SCL header alias near AREF.

SPI

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Datasheet function
50	Communication	SPI	Input	MISO.
51	Communication	SPI	Output	MOSI.
52	Communication	SPI	Output	SCK.
53	Communication	SPI	Output	SS.

PWM / LED / Interrupt-capable digital pins

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Datasheet function
2	GPIO	PWM	Bi-Directional	PWM; external interrupt 0.
3	GPIO	PWM	Bi-Directional	PWM; external interrupt 1.
4	GPIO	PWM	Bi-Directional	PWM.
5	GPIO	PWM	Bi-Directional	PWM.
6	GPIO	PWM	Bi-Directional	PWM.
7	GPIO	PWM	Bi-Directional	PWM.
8	GPIO	PWM	Bi-Directional	PWM.
9	GPIO	PWM	Bi-Directional	PWM.
10	GPIO	PWM	Bi-Directional	PWM.
11	GPIO	PWM	Bi-Directional	PWM.
12	GPIO	PWM	Bi-Directional	PWM.
13	GPIO	LED_PWM	Bi-Directional	PWM; built-in LED connected to D13.
44	GPIO	PWM	Bi-Directional	PWM.
45	GPIO	PWM	Bi-Directional	PWM.
46	GPIO	PWM	Bi-Directional	PWM.

General Digital I/O

Table

Terminal range	Suggested Section	Suggested Pin Group	Suggested Pin Type	Notes
22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43	GPIO	Digital	Bi-Directional	General 5 V digital I/O pins.
47, 48, 49	GPIO	Digital	Bi-Directional	General 5 V digital I/O pins.

Analog Inputs

Table

Terminal	Suggested Section	Suggested Pin Group	Suggested Pin Type	Notes
AD0	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD1	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD2	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD3	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD4	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD5	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD6	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD7	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD8	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD9	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD10	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD11	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD12	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD13	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD14	Analog	Analog_Input	Input	Analog input, 10-bit ADC.
AD15	Analog	Analog_Input	Input	Analog input, 10-bit ADC.

Coverage check

The grouping above covers all terminals currently present in the schematic and avoids assigning any terminal to more than one primary group.

Current terminal count covered: 87 terminals.

Notes from datasheet

Board operating voltage: 5 V.
Input voltage recommended range: 7–12 V.
Input voltage limit: 6–20 V.
Digital I/O pins: 54, of which 15 provide PWM output.
Analog input pins: 16.
UARTs: 4 hardware serial ports.
SPI pins: 50 MISO, 51 MOSI, 52 SCK, 53 SS; also broken out on ICSP header.
TWI/I2C pins: 20 SDA and 21 SCL, plus Rev3 SDA/SCL header pins near AREF.
3.3 V rail maximum current: 50 mA.

Grouping rule used

Power / Reference

Ground

Control / Reserved

UART / Serial

I2C / TWI

SPI

PWM / LED / Interrupt-capable digital pins

General Digital I/O

Analog Inputs

Coverage check

Notes from datasheet

Reviews

Documents

Arduino Mega2560 Pin Function Groups

Assets

A000067

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kicad_mod

ARDUINO_A000067.kicad_mod

FP_ARDUINO_A000067Footprint

step

A000067.step

3D_A0000673D Model

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Project Name

Arduino Mega2560

Description

ATmega2560 Arduino Mega2560 AVR® ATmega AVR MCU 8-Bit Embedded Evaluation Board

The MEGA 2560 is designed for more complex projects. With 54 digital I/O pins, 16 analog inputs and a larger space for your sketch it is the recommended board for 3D printers and robotics projects. This gives your projects plenty of room and opportunities.  The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega 2560 board is compatible with most shields designed for the Uno and the former boards Duemilanove or Diecimila.

Key Features Microcontroller: ATmega2560 AVR Operating voltage: 5 V Clock speed: 16 MHz Flash memory: 256 KB SRAM: 8 KB EEPROM: 4 KB 54 digital I/O pins 16 analog input pins 15 PWM output pins 4 hardware UART serial ports Supports: UART SPI I2C communication USB interface for programming and power Compatible with Arduino shields Ideal for: Robotics 3D printers Automation systems IoT projects Complex embedded applications

This component belongs to the category: Development Board / MCU Evaluation Board / Embedded System Platform.

#commonpartslibrary #atmega2560 #arduino2560 #evaluationboard #developmentboard

Properties

Part Type

Development Board

Manufac…er Name

Arduino

Manufac… Number

A000067

Datasheet URL

media.digikey.com/pdf/Data%20Sheets/Arduino%20PDFs/A000067_Web.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

Distributor	Qty 1

Controls

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