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Arduino UNO R4 WiFi User Manual

Arduino UNO R4 WiFi
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Arduino® UNO R4 WiFi
8 / 23 Arduino® UNO R4 WiFi Modified: 26/06/2023
4 Board Topology
4.1 Front View
Top View of Arduino UNO R4 WiFi
Ref. Description
U1 R7FA4M1AB3CFM#AA0 Microcontroller IC
U2 NLASB3157DFT2G Multiplexer
U3 ISL854102FRZ-T Buck Converter
U4 TXB0108DQSR logic level translator (5 V - 3.3 V)
U5 SGM2205-3.3XKC3G/TR 3.3 V linear regulator
U6 NLASB3157DFT2G Multiplexer
U_LEDMATRIX 12x8 LED Red Matrix
M1 ESP32-S3-MINI-1-N8
PB1 RESET Button
JANALOG Analog input/output headers
JDIGITAL Digital input/output headers
JOFF OFF, VRTC header
J1 CX90B-16P USB-C® connector
J2 SM04B-SRSS-TB(LF)(SN) I2C connector
J3 ICSP header (SPI)
J5 DC Jack
J6 ESP header
DL1 LED TX (serial transmit)

Table of Contents

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Arduino UNO R4 WiFi Specifications

General IconGeneral
Operating Voltage5V
Input Voltage6-24V
Digital I/O Pins14
PWM Pins6
Analog Input Pins6
Flash Memory256 KB
SRAM32 KB
EEPROM8 KB
Clock Speed48 MHz
Wi-FiYes
BluetoothYes
USB ConnectorUSB-C
Dimensions68.6 mm x 53.4 mm
DC Current per I/O Pin8 mA
UARTYes
SPIYes
I2CYes
CANNo
MicrocontrollerRA4M1 (Arm Cortex-M4)

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