UNO R3 Compatible ATmega328P Development Board
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Description
This Arduino Uno R3 compatible development board is powered by the ATmega328P microcontroller, providing a versatile platform for building electronic circuits and coding projects. It features 14 digital input/output pins, 6 analogue inputs, and a 16 MHz clock speed for reliable control and prototyping. It is well suited to learners, makers, and educators exploring robotics and embedded systems.
Microcontroller and memory
The board is driven by an ATmega328P microcontroller clocked at 16 MHz. It provides 32 KB of flash memory with 0.5 KB reserved for the bootloader, 2 KB of SRAM, and 1 KB of EEPROM for data storage.
Input and output configuration
There are 14 digital I/O pins, with 6 supporting PWM output, along with 6 dedicated analogue inputs. Individual I/O pins deliver up to 40 mA DC current, while the 3.3V line supplies up to 50 mA.
Power supply limits
Operating at 5V and 12V, the board accepts a recommended input voltage of 7V to 12V, with absolute limits rated between 6V and 20V.
Specifications
| Device | UNO REV3 |
| Type | ATMEGA328 |
| Microcontroller | ATmega328P |
| Operating Voltage | 5V & 12V |
| Input Voltage (recommended) | 7-12V |
| Input Voltage (limits) | 6-20V |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 40 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 32 KB (ATmega328) of which 0.5 KB used by bootloader |
| SRAM | 2 KB (ATmega328) |
| EEPROM | 1 KB (ATmega328) |
| Clock Speed | 16 MHz |
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