datasheet update

xpeqex · xpeqex · commit 625ece928ce2 · 2025-03-13T15:59:52.000-06:00
diff --git a/content/hardware/03.nano/boards/nano-r4/datasheet/datasheet.md b/content/hardware/03.nano/boards/nano-r4/datasheet/datasheet.md
@@ -9,225 +9,221 @@ author:
 
 # Description
 
-The Arduino® Nano R4 is  a Nano form factor board based on the RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0), which embeds a 48 MHz Arm® Cortex®-M4 microprocessor. The Nano R4's memory is larger than its predecessors, with 256 kB flash, 32 kB SRAM and 8 kB data memory (EEPROM).
+The Arduino® Nano R4 is  a Nano form factor board based on the RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#HA0), which embeds a 48 MHz Arm® Cortex®-M4 microprocessor. The Nano R4's memory is larger than its predecessors, with 256 kB flash, 32 kB SRAM and 8 kB data memory (EEPROM).
 
 The Nano R4 board's operating voltage is 5 V, making it hardware compatible with Nano form factor accessories with the same operating voltage. Shields designed for previous Nano revisions are therefore safe to use with this board but are not guaranteed to be software compatible due to the change of microcontroller.
 
 # Target areas:
 
 Maker, Beginner, Education
 
-# Features
-- **R7FA4M1AB3CFM#HA0**
-  - 48 MHz Arm® Cortex®-M4 microprocessor with a floating point unit (FPU)
-  - 5 V operating voltage
-  - Real-time Clock (RTC)
-  - Memory Protection Unit (MPU)
-  - Digital Analog Converter (DAC)
-- **Memory**
-  - 256 kB Flash Memory
-  - 32 kB SRAM
-  - 8 kB Data Memory (EEPROM)
-- **Pins**
-  - 14x digital pins (GPIO), D0-D13
-  - 8x analog input pins (ADC), A0-A7
-  - <!--- PWM pins--> 
-  - SPI(D11,D12,D13), I2C (A4/A5), UART(D0/D1)
-- **Peripherals**
-  - USB 2.0 Full-Speed Module (USBFS)
-  - up to 14-bit ADC
-  - up to 12-bit DAC
-  - Operational Amplifier (OPAMP)
-- **Power**
-  - Recommended input voltage (VIN) is 6-24 V
-  - 5 V operating voltage
-  - Power via USB-C® at 5 V
-  - Schottky diodes for overvoltage and reverse polarity protection
-- **Communication**
-  - 1x UART (pin D0, D1)
-  - 1x SPI (pin D10-D13)
-  - 1x I2C (pin A4, A5)
-  - 1x CAN (pin D4, D5, external transceiver is required)
-
 # Contents
+## Application Examples
 
-## The Board
-
+<div style="text-align:justify;">
 The Nano R4 is a evolution of its predecessors the Nano Classic, being previously based on 8-bit AVR
 microcontrollers. There are thousands of guides, tutorials and books written about the Nano board, where Nano R4 continues its legacy.
 The board features the standard 14 digital I/O ports, 6 analog channels, dedicated pins for I2C, SPI and UART
 connections. Compared to its predecessors the board has a much larger memory: 8 times more flash memory (256
 kB) and 16 times more SRAM (32 kB).
 
-### Application Examples
 
 **Entry level projects:** If this is your first project within coding and electronics, the Nano R4 is a good fit. It is easy to get started with and has a lot of online documentation (both official + third party).
 
 **Easy power management:** the Nano R4 supports input voltages from 6-24 V. Removes the need for additional circuitry required to step down the voltage.
 
 **Cross compatibility:** the Nano form factor automatically makes it compatible with hundreds of existing third-party shields and other accessories.
+</div>
 
-### Related Products
-
-- Arduino Nano Classic
-
-<div style="page-break-after: always;"> </div>
-
-# Rating
-
-## Recommended Operating Conditions
-
-| Symbol          | Description                          | Min | Typ | Max | Unit |
-| --------------- | ------------------------------------ | --- | --- | --- | ---- |
-| V<sub>IN</sub>  | Input voltage from VIN pad / DC Jack | 6   | 7.0 | 24  | V    |
-| V<sub>USB</sub> | Input voltage from USB connector     | 4.8 | 5.0 | 5.5 | V    |
-| T<sub>OP</sub>  | Operating Temperature                | -40 | 25  | 85  | °C   |
-
-<!--- Temp to be confirmed-->
-
-<div style="page-break-after: always;"> </div>
-
-# Functional Overview
-
-## Block Diagram
-
-![Arduino Nano R4 Block Diagram](assets/Nano_R4_Block_Diagram.png)
-
-## Board Topology
-
-### Front View
-
-![Top View of Arduino Nano R4](assets/topViewNanoR4.svg)
-
-| **Ref.** | **Description**                      | **Ref.** | **Description**          |
-| -------- | ------------------------------------ | -------- | ------------------------ |
-| U1       | R7FA4M1AB3CFM#AA0 Microcontroller IC | J4       | <!--- to be confirmed--> |
-| U2       | MP2322GQH Step-Down                  | DL1      | RGB LED                  |
-| PB1      | RESET Button                         | DL2      | LED L                    |
-| JP1      | Analog input/output headers          | DL3      | LED Power                |
-| JP2      | Digital input/output headers         |
-| J1       | CX90B-16P USB-C® connector           |
-| J2       | QWIIC CONNECTOR                      |
-| J3       | <!--- to be confirmed-->             |
+## Features
+### General Specifications Overview
 
-### Back View
+| Feature               | Description                                                             |
+| --------------------- | ----------------------------------------------------------------------- |
+| Microcontroller       | **R7FA4M1AB3CFM#HA0** 32-bit Arm® Cortex®-M4                            |
+| Internal Memory       | 256 kB Flash / 32 kB RAM / 8 kB EEPROM                                  |
+| USB Connectivity      | USB-C® port for power and data                                          |
+| Power                 | Input voltage (VIN): 6-24 V / Power via USB-C® at 5 V                   |
+| Digital Inputs        | GPIO (x21 - All exposed I/O can be used as digital), PWM (x15)          |
+| Analog Inputs         | 14-bit ADC (x8)                                                         |
+| Communication         | UART (x2), I2C (x2), SPI (x2), CAN (external transceiver required) (x1) |
+| Dimensions            | 18 mm x 45 mm                                                           |
+| Operating Temperature | -40 °C to +85 °C                                                        |
 
-![Back View of Arduino Nano R4](assets/backViewNanoR4.svg)
-
-## Microcontroller (R7FA4M1AB3CFM#HA0)
+### Microcontroller
 
 The Nano R4 is based on the 32-bit RA4M1 series microcontroller, **R7FA4M1AB3CFM#HA0**, from Renesas, which uses a 48 MHz Arm® Cortex®-M4 microprocessor with a floating point unit (FPU).
 
 On the Nano R4, the operating voltage is fixed at 5 V to be fully retro compatible with shields, accessories & circuits originally designed for older Nano revisions.
 
-The R7FA4M1AB3CFM#HA0 features:
-
-- 256 kB flash / 32 kB SRAM / 8 kB data flash (EEPROM)
-- Real-time Clock (RTC)
-- 4x Direct Memory Access Controller (DMAC)
-- up to 14-bit ADC
-- up to 12-bit DAC
-- OPAMP
-- 1x CAN bus
+| Component                   | Details                               |
+| --------------------------- | ------------------------------------- |
+| R7FA4M1AB3CFM#HA0 Processor | Arm® Cortex®-M4 core at up to 480 MHz |
+| Flash Memory                | 256 kB of Flash Memory                |
+| Programming Memory          | 32kB MB of RAM                        |
+| Data Memory                 | 8kB MB of RAM                         |
 
 For more technical details on this microcontroller, visit [Renesas - RA4M1 series](https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra4m1-32-bit-microcontrollers-48mhz-arm-cortex-m4-and-lcd-controller-and-cap-touch-hmi).
 
-## USB Connector
+### USB-C® Connector
 
 The Nano R4 has one USB-C® port, used to power and program your board as well as send & receive serial communication.
 
 **_Note: You should not power the board with more than 5 V via the USB-C® port._**
 
-## Digital Analog Converter (DAC)
+### Digital Analog Converter (DAC)
 
 The Nano R4 has a DAC with up to 12-bit resolution attached to the A0 analog pin. A DAC is used to convert a digital signal to an analog signal.
 
-## I2C Connector
+### I2C Connector
 
 The I2C connector SM04B-SRSS-TB(LF)(SN) is connected to a secondary I2C bus on the board. Note that this connector is powered via 3.3 V.
 
 <!---Posible connector pic-->
 
 This connector also shares the following pin connections:
 
-**JANALOG header**
+**JP1 header**
 - A4
 - A5
 
 <!---Is not this a separated I2C bus? I get this from the UNO R4 WiFi-->
 
-## System
-
-### Resets
+**Note:** as A4/A5 is connected to the main I2C bus, these should not be used as ADC inputs whenever the bus is in use. You can however connect I2C devices to each of these pins and connectors simultaneously.
 
-### Timers
 
-### Interrupts
-
-## Serial Communication Protocols
-
-### Inter-Integrated Circuit (I2C)
+### Related Products
 
-### Inter-IC Sound (I2S)
+- Arduino Nano (A000005)
+- Arduino® UNO R4 Minima (ABX00080)
+- Arduino® UNO R4 WiFi (ABX00087)
 
-### Serial Peripheral Interface (SPI)
+## Ratings
+### Recommended Operating Conditions
 
-### Universal Asynchronous Receiver/Transmitter (UART)
+| Symbol          | Description                          | Min | Typ | Max | Unit |
+| --------------- | ------------------------------------ | --- | --- | --- | ---- |
+| V<sub>IN</sub>  | Input voltage from VIN pad / DC Jack | 6   | 7.0 | 24  | V    |
+| V<sub>USB</sub> | Input voltage from USB connector     | 4.8 | 5.0 | 5.5 | V    |
+| T<sub>OP</sub>  | Operating Temperature                | -40 | 25  | 85  | °C   |
 
-## Power Options
+**Note:** V<sub>DD</sub> controls the logic level and is connected to the 5V power rail. V<sub>AREF</sub> is for the analog logic.
 
-### Power Tree
+## Functional Overview
+### Board Topology
+#### Front View
 
-### Pin Voltage
+![Top View of Arduino Nano R4](assets/topViewNanoR4.svg)
 
-### VIN Rating
+| **Ref.** | **Description**                          |
+| -------- | ---------------------------------------- |
+| U1       | R7FA4M1AB3CFM#AA0 Microcontroller IC     |
+| U2       | MP2322GQH Step-Down                      |
+| U3       | AP2112K-3.3TRG1 Dropout linear regulator |
+| PB1      | RESET Button                             |
+| JP1      | Analog input/output headers              |
+| JP2      | Digital input/output headers             |
+| J1       | CX90B-16P USB-C® connector               |
+| J2       | SM04B-SRSS-TB(LF)(SN) I2C connector      |
+| DL1      | RGB LED                                  |
+| DL2      | LED L                                    |
+| DL3      | LED Power (green)                        |
+| PB1      | RESET Button                             |
 
-### VBUS
 
-### Using the 3.3 V Pin
+#### Back View
 
-### Pin Current
+![Back View of Arduino Nano R4](assets/backViewNanoR4.svg)
 
-# Mechanical Information
+### Pinout
+
+![Pinout for Nano R4](assets/ABXXXXX-pinout.png)
+
+### Full Pinout Table
+#### Analog (JP1)
+
+| Pin | Function  | Type      | Description                             |
+| --- | --------- | --------- | --------------------------------------- |
+| 1   | D13 / SCK | NC        | Serial Clock                            |
+| 2   | +3V3      | Power Out | +3V3 Power Rail                         |
+| 3   | B0 / AREF | Analog    | Analog Reference                        |
+| 4   | A0        | Analog    | Analog input 0 / DAC                    |
+| 5   | A1        | Analog    | Analog input 1 / OPAMP+                 |
+| 6   | A2        | Analog    | Analog input 2 / OPAMP-                 |
+| 7   | A3        | Analog    | Analog input 3 / AMPOut                 |
+| 8   | A4        | Analog    | Analog input 4 / I²C Serial Datal (SDA) |
+| 9   | A5        | Analog    | Analog input 5 / I²C Serial Clock (SCL) |
+| 10  | A6        | Analog    | Analog input 6                          |
+| 11  | A7        | Analog    | Analog input 7                          |
+| 12  | 5V        | Power     | USB power (5V)                          |
+| 13  | BOOT1     | Mode      | Board Reset 1                           |
+| 14  | GND       | Power     | Ground                                  |
+| 15  | VIN       | Power     | Voltage Input                           |
+
+#### Digital (JP2)
+
+| Pin | Function     | Type     | Description                             |
+| --- | ------------ | -------- | --------------------------------------- |
+| 1   | D12 / CIPO\* | Digital  | Controller In Peripheral Out            |
+| 2   | D11 / COPI\* | Digital  | Controller Out Peripheral In            |
+| 3   | D10 / CS\*   | Digital  | Chip Select                             |
+| 4   | D9           | Digital  | Digital pin 9                           |
+| 5   | D8           | Digital  | Digital pin 8                           |
+| 6   | D7           | Digital  | Digital pin 7                           |
+| 7   | D6           | Digital  | Digital pin 6                           |
+| 8   | D5           | Digital  | Digital pin 5                           |
+| 9   | D4           | Digital  | Digital pin 4                           |
+| 10  | D3           | Digital  | Digital pin 3                           |
+| 11  | D2           | Digital  | Digital pin 2                           |
+| 12  | GND          | Power    | Ground                                  |
+| 13  | RST          | Internal | Reset                                   |
+| 14  | D0/RX        | Digital  | Digital pin 1 / Serial Receiver (RX)    |
+| 15  | D1/TX        | Digital  | Digital pin 0 / Serial Transmitter (TX) |
+
+\*CIPO/COPI/CS replaces the MISO/MOSI/SS terminology.
+
+### Block Diagram
 
-## Pinout
+![Arduino Nano R4 Block Diagram](assets/Nano_R4_Block_Diagram.png)
 
-### Analog
+### Power Options
 
-### Digital
+Power can either be supplied via the VIN pin, or via USB-C® connector. If power is supplied via VIN, the MP2322GQH buck converter steps the voltage down to 5 V.
 
-### OFF
+The 5 V output of the uck converter is connected to a Schottky diode in place for reverse polarity & overvoltage protection respectively.
 
-### ICSP
+Power via USB supplies about ~4.7 V (due to Schottky drop) to the RA4M1 microcontroller.
 
-## Mounting Holes And Board Outline
+#### Power Tree
 
-## Board Operation
+![Arduino UNO R4 Minima power tree.](assets/UNO_R4_Minima_Power_Tree.png)
 
-### Getting Started - IDE
+### Pin Voltage
 
-### Getting Started - Arduino Cloud Editor
+The Nano R4 operates on 5 V, as does all pins on this board except for the **3.3V pin**. This pin draws power from the `OUT` pin on the AP2112K-3.3TRG1.
 
-### Getting Started - Arduino Cloud
+### Pin Current
 
-### Online Resources
+The GPIOs on the R7FA4M1AB3CFM#HA0 microcontroller can handle up to **8 mA**. Never connect devices that draw higher current directly to a GPIO.
 
-### Board Recovery
+In case you need to power external devices that require more power, e.g. servo motors, use an external power supply.
 
-# Certifications
+<div style="page-break-after: always;"> </div>
 
-## Declaration of Conformity CE DoC (EU)
+## Device Operation
 
-## Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
+### Getting Started - IDE
 
-## Conflict Minerals Declaration
+### Getting Started - Arduino Cloud Editor
 
-## FCC Caution
+### Samles Sketches
 
-## SRRC
+### Online Resources
 
-## Company Information
+## Mechanical Information
+### Board Dimensions
 
-## Reference Documentation
+![Mechanical View of Arduino Nano R4](assets/mechanicalDrawingNanoR4.png)
 
-## Change Log
+### Board Connectors
+### Board Peripherals and Actuators
