Overview
The Arduino UNO R4 Minima is a latest new upgrade to the popular and world famous Arduino UNO R3 board. UNO R4 has the same form factor as the UNO R3 measuring 68.58 x 53.34 mm in dimensions. UNO R4 Minima comes with a Renesas RA4M1 (Arm® Cortex®-M4) a 32-bit microprocessor clocked at 48 MHz, expanded menory with 32kB of SRAM and 256kB of flash memory and supports 5V operating voltage.
Apart from the improved performance and expanded memory, it has an onboard RTC (Real Time Clock), DAC (Digital to Analog Converter), 14-bit ADC (Analog to Digital Converter), OPAMP (Operational Amplifier) and a MPU (Memory Protection Unit). All these features eliminate the need for additional components in projects, simplifying the design process.
The UNO R4 Minima's user-friendly design makes it easy to learn for beginners, while its powerful features provide ample room for experienced users to explore more complex projects. Whether you're building a sophisticated robot with advanced motor control or developing a data logger that captures and analyzes intricate sensor readings, the UNO R4 Minima has the power and memory to handle your project's needs.
Features
Microprocessor
- Renesas RA4M1 Arm® Cortex®-M4 microprocessor @ 48MHz with a floating point unit (FPU) @ 5V operating voltage
- Real-time Clock (RTC)
- Memory Protection Unit (MPU)
- Digital Analog Converter (DAC)
Memory
- 256 KB Flash
- 32 KB SRAM
- 8 KB EEPROM
Pins
- 14x Digital Pins (GPIO), D0 - D13
- 6x Analog Input Pins (ADC), A0 - A5
- 6x PWM Pins D3, D5, D6, D9, D10, D11
Peripherals
- Capacitive Touch Sensing Unit
- USB 2.0 Full Speed Module
- 14-bit ADC
- 12-bit DAC
- Operational Amplifier (OPAMP)
Power
- 6 to 24V Recommended Voltage
- 5V Operating Voltage
- Power via USB-C @ 5V
- Overvoltage and Reverse Polarity Portection with Schottky Diodes
Specification
| Microcontroller | Renesas RA4M1 (Arm® Cortex®-M4) |
| USB | USB-C® |
| Pins | 14x Digital I/O Pins 6x Analog Input Pins 1x DAC 6x PWM Pins |
| Communication | 1x USB (Programming Port) 1x UART 1x I2C 1x SPI 1x CAN Bus |
| Input Voltage | 6 to 24V |
| Operating Voltage | 5V |
| Current per I/O Pin | 8mA |
| Clock Speed | 48 MHz |
| Memory | 256 KB Flash 32 KB SRAM 8 KB EEPROM |
| Dimensions | 68.58 x 53.34 mm |
Pinout
Pinout for Arduino UNO R4 Minima
Power
| Pin | Function | Description | |
|---|---|---|---|
| Analog Side | |||
| 4 | +3V3 | +3V3 Output Power Rail | |
| 5 | +5V | +5V Output Power Rail | |
| 6 | GND | Ground | |
| 7 | GND | Ground | |
| 8 | VIN | Voltage Input | |
| Digital Side | |||
| 4 | GND | Ground | |
Analog
| Pin | Function | Description | |
|---|---|---|---|
| 9 | A0 | Analog Input 0 / DAC | |
| 10 | A1 | Analog Input 1 / OPAMP+ | |
| 11 | A2 | Analog Input 2 / OPAMP- | |
| 12 | A3 | Analog Input 3 / OPAMP Out | |
| 13 | A4 / D18 | Analog Input 4 / SDA | |
| 14 | A5 / D19 | Analog Input 5 / SCL |
Digital
| Pin | Function | Description | |
|---|---|---|---|
| 1 | SCL / D19 | I2C Serial Clock | |
| 2 | SDA / D18 | I2C Serial Data | |
| 3 | AREF | Analog Reference Voltage | |
| 5 | D13 / SCK | GPIO13 / SPI Clock | |
| 6 | D12 / CIPO | GPIO12 / SPI Controller In Peripheral Out | |
| 7 | D11 / COPI | GPIO11 / SPI Controller Out Peripheral In | |
| 8 | D10 / CS | GPIO 10 / SPI Chip Select | |
| 9 | D9 | GPIO 9 (PWM ~) | |
| 10 | D8 | GPIO 8 | |
| 11 | D7 | GPIO 7 | |
| 12 | D6 | GPIO 6 (PWM ~) | |
| 13 | D5 / CANRX0 | GPIO 5 (PWM ~) / CAN Transmitter (TX) | |
| 14 | D4 / CANTX0 | GPIO 4 / CAN Receiver (RX) | |
| 15 | D3 | GPIO 3 (PWM ~) / Interrupt Pin | |
| 16 | D2 | GPIO 2 / Interrupt Pin | |
| 17 | D1 / TX0 | GPIO 1 / Serial 0 Transmitter (TX) | |
| 18 | D0 / RX0 | GPIO 0 / Serial 0 Receiver (RX) |
ICSP Header
Pinout and pin position for ICSP Header
| RESET | SCK | CIPO |
| GND | COPI | +5V |
SWD/JTAG Header
Pinout and pin position for SWD/JTAG Header
| SWDIO | SWCLK | NC | TX | 10 RESET |
| +5V | GND | GND | RX | GND |
Arduino UNO R4 vs UNO R3
Let's compare the all new UNO R4 and the world famous UNO R3.
| UNO R4 Minima
New!
|
UNO R3 | |
|---|---|---|
| Microcontroller | Renesas RA4M1 (Arm® Cortex®-M4) | ATmega328P (8-bit AVR® RISC-based microcontroller) |
| USB | USB-C® | USB B Connector |
| Pins | 14x Digital I/O Pins 6x Analog Input Pins 1x DAC 6x PWM Pins |
14x Digital I/O Pins 6x Analog Input Pins 6x PWM Pins |
| Communication | 1x USB (Programming Port) 1x UART 1x I2C 1x SPI 1x CAN Bus |
1x USB (Programming Port) 1x UART 1x I2C 1x SPI |
| Input Voltage | 6 to 24V | 7 to 12V (Recommended) 6 to 20V (limit) |
| Operating Voltage | 5V | 5V |
| Current per I/O Pin | 8mA | 20mA |
| Clock Speed | 48 MHz | 16 MHz |
| Memory | 256 KB Flash 32 KB SRAM 8 KB EEPROM |
32 KB Flash 2 KB SRAM 1 KB EEPROM |
| Dimensions | 68.58 x 53.34 mm | 68.58 x 53.34 mm |
Opps
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