MICROCHIP EV54Y39A User guide

PIC-IoT Wx Hardware User
Guide
PIC-IoT Wx Hardware User Guide

Preface

Important:  This document is applicable for two different products; PIC-IoT WG (AC164164) and PIC-IoT
WA (EV54Y39A). Both variants are referred to as PIC-IoT Wx in this document, and both products have identical hardware. PIC-IoT WG is preconfigured to send data through Google Cloud IoT Core, and PIC­IoT WA is preconfigured to send data through Amazon Web Services (AWS). Both products can be reconfigured to send data to different cloud providers.
Introduction
The PIC-IoT Wx development board is a small and easily expandable demonstration and development platform for IoT solutions based on the PIC® microcontroller architecture using Wi-Fi® technology. It is designed to demonstrate that the design of a typical IoT application can be simplified by partitioning the problem into three blocks:
• Smart - represented by the PIC24FJ128GA705 microcontroller
• Secure - represented by the ATECC608A secure element
• Connected - represented by the ATWINC1510 Wi-Fi controller module
The PIC-IoT Wx Development Board features the following elements:
• The on-board debugger (PKOB nano) supplies full programming and debugging support through MPLAB X IDE. It also provides access to a serial port interface (serial to USB bridge) and one logic analyzer channel (debug GPIO).
• The on-board debugger enumerates on the PC as a mass storage interface device for easy ‘drag and drop’ programming, Wi-Fi configuration, and full access to the microcontroller application Command Line Interface (CLI)
• A mikroBUS™ socket allows for the ability to expand the board capabilities with the selection from 450+ sensors and actuators options offered by MikroElektronika (www.mikroe.com) via a growing portfolio of Click boards
• A light sensor used to demonstrate published data
• Microchip MCP9808 high-accuracy temperature sensor used to demonstrate published data
• Microchip MCP73871 Li-Ion/LiPo battery charger with power path management
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MPLAB® X IDE - Software to discover, configure, develop, program, and debug Microchip microcontrollers.
Application Code on GitHub - Get started with application code.
PIC-IoT WG website - Find schematics, design files, and purchase the board. Set up for Google Cloud IoT Core.
PIC-IoT WA website - Find schematics, design files, and purchase the board. Set up for Amazon Web Services.
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Table of Contents

Preface........................................................................................................................................................... 1
1. Introduction............................................................................................................................................. 5
1.1. Features....................................................................................................................................... 5
1.2. Kit Overview................................................................................................................................. 5
2. Getting Started........................................................................................................................................ 7
2.1. Quick Start....................................................................................................................................7
2.2. Design Documentation and Relevant Links................................................................................. 7
3. Application User Guide........................................................................................................................... 8
4. Hardware User Guide............................................................................................................................. 9
4.1. On-Board Debugger Overview..................................................................................................... 9
4.1.1. Debugger.......................................................................................................................9
4.1.2. Virtual Serial Port (CDC)................................................................................................9
4.1.3. Mass Storage Device...................................................................................................12
4.1.4. Data Gateway Interface (DGI)..................................................................................... 13
4.2. On-Board Debugger Connections.............................................................................................. 14
4.3. Power......................................................................................................................................... 15
4.3.1. Power Source.............................................................................................................. 15
4.3.2. Battery Charger........................................................................................................... 15
4.3.3. Hardware Modifications............................................................................................... 15
4.4. Peripherals................................................................................................................................. 16
4.4.1. PIC24FJ128GA705......................................................................................................16
4.4.2. mikroBUS™ Socket...................................................................................................... 16
4.4.3. WINC1510 Wi-Fi Module............................................................................................. 17
4.4.4. ATECC608A................................................................................................................ 18
4.4.5. Temperature Sensor.................................................................................................... 18
4.4.6. Light Sensor.................................................................................................................19
4.4.7. LED..............................................................................................................................19
4.4.8. Mechanical Buttons..................................................................................................... 19
5. Regulatory Approval..............................................................................................................................20
5.1. United States..............................................................................................................................20
5.2. Canada.......................................................................................................................................20
5.3. Taiwan........................................................................................................................................ 21
5.4. List of Antenna Types.................................................................................................................21
6. Hardware Revision History and Known Issues..................................................................................... 22
6.1. Identifying Product ID and Revision........................................................................................... 22
6.2. PIC-IoT WG................................................................................................................................22
6.2.1. Revision 3....................................................................................................................22
6.2.2. Revision 2....................................................................................................................22
6.3. PIC-IoT WA................................................................................................................................ 22
6.3.1. Revision 1....................................................................................................................22
7. Document Revision History...................................................................................................................23
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8. Appendix............................................................................................................................................... 24
8.1. Schematic...................................................................................................................................24
8.2. Assembly Drawing......................................................................................................................26
8.3. Mechanical Drawings................................................................................................................. 26
The Microchip Website.................................................................................................................................28
Product Change Notification Service............................................................................................................28
Customer Support........................................................................................................................................ 28
Microchip Devices Code Protection Feature................................................................................................ 28
Legal Notice................................................................................................................................................. 28
Trademarks.................................................................................................................................................. 29
Quality Management System....................................................................................................................... 29
Worldwide Sales and Service.......................................................................................................................30
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1. Introduction

1.1 Features

PIC24FJ128GA705 Microcontroller
ATWINC1510 Wi-Fi Module
ATECC608A CryptoAuthentication™ Device
• Preconfigured for Microchip Accounts with Different Cloud Providers
– Google Cloud IoT Core – Amazon Web Services (AWS)
• Four User LEDs
• Two Mechanical Buttons
• TEMT6000 Light Sensor
MCP9808 Temperature Sensor
• mikroBUS Socket
• On-board Debugger
– Board identification in Microchip MPLAB X IDE – One green board power and status LED – Virtual serial port (USB CDC) – One logic analyzer channel (debug GPIO)
• USB and Battery Powered
MCP73871 Li-Ion/LiPo Battery Charger
• Fixed 3.3V
PIC-IoT Wx Hardware User Guide
Introduction

1.2 Kit Overview

The PIC-IoT Wx development board is a hardware platform to evaluate and develop IoT solutions with the Microchip PIC24FJ128GA705 16-bit microcontroller, ATECC608A secure element, and WINC1510 Wi-Fi controller module.
The preprogrammed demo application publishes data from the on-board light and temperature sensor read by the PIC24FJ128GA705 every second to the cloud. Any data received from the cloud over the subscribed topic is sent to the virtual serial port and can be displayed in a serial terminal application. The WINC1510 needs a connection to a Wi-Fi network with an internet connection. The ATECC608A is used to authenticate the hardware with the cloud to uniquely identify every board. The demo application source code can be modified to publish data to a personal cloud account to get started with a custom cloud application.
The figure below shows the main features and pinout of the board.
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Figure 1-1. PIC-IoT Wx Development Kit Overview
Time r/PWM
UART RX
RB14
RB15
RA0
RA1
RB0
RB1
3.3V
GND
SP I SCK
SP I MISO
SP I MOSI
RC6
RB7
RB6
RB5
RB8
RB9
5.0V
GND
UART TX
I2C SCL
I
2
C SDA
Wi-Fi Status LED
RC5
Conn ec tion S tatus LED
RC4
Data Trans fer LED
RC3
Error Status LED
RB4
RA10
USER SWITCH 1
RA7
USER SWITCH 0
ATWINC151 0 Wi-Fi®Mo dule
Mic ro US B Con nec tor
Po wer/S tatus LED
PKoB 4 na no Debu gg er/Prog ramme r
ADC AIN7
PIC24FJ12 8GA705 Microc ontroller
Charg e Status LEDs
LiPo Con ne cto r
MCP7 387 1 LiPo Charger
ATECC608A Se cu re Ele men t
Light Se ns or
MCP9 808 Tem peratu re S ens or
MIC3305 0 Voltag e Re gu lato r
SP I CS
Res et
Interrupt
PIC-Io T WG De ve lo pme nt Bo ard (AC164164)
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Introduction
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PIC-IoT Wx Hardware User Guide

2. Getting Started

2.1 Quick Start

Steps to start exploring the board:
1. Connect the board to your computer.
2. Open the “CLICK-ME.HTM” file on the “CURIOSITY” mass storage disk and follow the instructions.
2.1. Download the latest application .hex firmware.
2.2. Download the Wi-Fi configuration file "WIFI.cfg".
3. Drag and drop the application .hex file on the "CURIOSITY" drive.
4. Drag and drop the “WIFI.cfg” configuration file on the “CURIOSITY” drive.
The board will now connect to your Wi-Fi network and send data to the website opened in step 2 through a cloud provider.

2.2 Design Documentation and Relevant Links

The following list contains links to the most relevant documents and software for the PIC-IoT Wx.
Getting Started
PIC-IoT WG website - Find schematics, design files, and purchase the board. Set up for Google Cloud IoT Core.
PIC-IoT WG on microchipDIRECT - Purchase this board on Microchip Direct.
PIC-IoT WA website - Find schematics, design files, and purchase the board. Set up for Amazon Web Services.
PIC-IoT WA on microchipDIRECT - Purchase this board on Microchip Direct.
MPLAB Data Visualizer - MPLAB Data Visualizer is a program used for processing and visualizing data. The Data Visualizer can receive data from various sources such as serial ports and on-board debugger’s Data Gateway Interface, as found on Curiosity Nano and Xplained Pro boards.
MPLAB® X IDE - MPLAB X IDE is a software program that runs on a PC (Windows®, Mac OS®, Linux®) to develop applications for Microchip microcontrollers and digital signal controllers. It is called an Integrated Development Environment (IDE) because it provides a single integrated “environment” to develop code for embedded microcontrollers.
Microchip Sample Store - Microchip sample store where you can order samples of devices.
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3. Application User Guide

The PIC24FJ128GA705 mounted on PIC-IoT Wx is preprogrammed with an application ready to publish data to a Microchip account with a cloud provider, and subscribe to data sent from https://pic-iot.com through the cloud provider. PIC-IoT WA is preconfigured for Amazon Web Services (AWS), and PIC-IoT WG is preconfigured for Google Cloud IoT Core. The data is read from the cloud and presented to the user on https://pic-iot.com.
PIC-IoT WA
The application publishes data through Amazon Web Services, and the firmware is available on GitHub: https://
github.com/microchip-pic-avr-solutions/pic-iot-aws-sensor-node.
PIC-IoT WG
The application publishes data through Google Cloud IoT Core. For in-depth information about the preprogrammed demo application and how to develop your application, see the full PIC-IoT WG Application User Guide: https://
www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en609711.
Setup for Different Cloud Accounts
Any PIC-IoT Wx kit can be reprovisioned to publish data to either Microchips sandbox account at Amazon Web Services, Microchips sandbox account at Google Cloud IoT Core, or to a personal account.
Download the IoT Provisioning Tool package, compatible with Windows, Mac and Linux to get started: https://
www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en1001525.
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Application User Guide
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4. Hardware User Guide

4.1 On-Board Debugger Overview

PIC-IoT Wx contains an on-board debugger for programming and debugging. The on-board debugger is a composite USB device consisting of several interfaces:
• A debugger that can program and debug the PIC24FJ128GA705 in MPLAB X IDE
• A mass storage device that allows drag-and-drop programming of the PIC24FJ128GA705
• A virtual serial port (CDC) that is connected to a Universal Asynchronous Receiver/Transmitter (UART) on the PIC24FJ128GA705, and provides an easy way to communicate with the target application through terminal software
• A Data Gateway Interface (DGI) for code instrumentation with logic analyzer channels (debug GPIO) to visualize program flow
The on-board debugger controls a Power and Status LED (marked PS) on the PIC-IoT Wx Board. The table below shows how the LED is controlled in different operation modes.
Table 4-1. On-Board Debugger LED Control
Operation Mode Power and Status LED
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Boot Loader mode The LED blinks slowly during power-up
Power-up The LED is ON
Normal operation The LED is ON
Programming Activity indicator: The LED blinks slowly during programming/debugging
Drag-and-drop programming
Fault The LED blinks rapidly if a power Fault is detected
Sleep/Off The LED is OFF. The on-board debugger is either in a sleep mode or powered down.

4.1.1 Debugger

The on-board debugger on the PIC-IoT Wx Board appears as a Human Interface Device (HID) on the host computer’s USB subsystem. The debugger supports full-featured programming and debugging of the PIC24FJ128GA705 using MPLAB X IDE.
Success: The LED blinks slowly for 2 sec.
Failure: The LED blinks rapidly for 2 sec.
This can occur if the board is externally powered.
Info:  Slow blinking is approximately 1 Hz, and rapid blinking is approximately 5 Hz.
Remember:  Keep the debugger’s firmware up-to-date. Firmware upgrades are done automatically when
using MPLAB X IDE.

4.1.2 Virtual Serial Port (CDC)

The virtual serial port (CDC) is a general purpose serial bridge between a host PC and a target device.
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4.1.2.1 Overview
Target MCU
UART TX
UART RX
Debugger
USB
CDC RX
CDC TX
PC
Terminal
Software
Target
Receive
Target
Send
Terminal Receive
Terminal
Send
The on-board debugger implements a composite USB device that includes a standard Communications Device Class (CDC) interface, which appears on the host as a virtual serial port. The CDC can be used to stream arbitrary data in both directions between the host computer and the target: All characters sent through the virtual serial port on the host computer will be transmitted as UART on the debugger’s CDC TX pin, and UART characters captured on the debugger’s CDC RX pin will be returned to the host computer through the virtual serial port.
Figure 4-1. CDC Connection
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Info:  As shown in Figure 4-1, the debugger’s CDC TX pin is connected to a UART RX pin on the target
for receiving characters from the host computer. Similarly, the debugger’s CDC RX pin is connected to a UART TX pin on the target for transmitting characters to the host computer.
4.1.2.2 Operating System Support
On Windows machines, the CDC will enumerate as Curiosity Virtual COM Port and appear in the Ports section of the Windows Device Manager. The COM port number can also be found there.
Info:  On older Windows systems, a USB driver is required for CDC. This driver is included in installations of MPLAB X IDE.
On Linux machines, the CDC will enumerate and appear as /dev/ttyACM#.
Info:  tty* devices belong to the “dialout” group in Linux, so it may be necessary to become a member of that group to have permissions to access the CDC.
On MAC machines, the CDC will enumerate and appear as /dev/tty.usbmodem#. Depending on which terminal program is used, it will appear in the available list of modems as usbmodem#.
Info:  For all operating systems: Be sure to use a terminal emulator that supports DTR signaling. See Section 3.1.2.4 “Signaling”.
4.1.2.3 Limitations
Not all UART features are implemented in the on-board debugger CDC. The constraints are outlined here:
Baud rate: Must be in the range of 1200 bps to 500 kbps. Any baud rate outside this range will be set to the closest limit, without warning. Baud rate can be changed on-the-fly.
Character format: Only 8-bit characters are supported.
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Parity: Can be odd, even, or none.
Hardware flow control: Not supported.
Stop bits: One or two bits are supported.
4.1.2.4 Signaling
During USB enumeration, the host OS will start both communication and data pipes of the CDC interface. At this point, it is possible to set and read back the baud rate and other UART parameters of the CDC, but data sending and receiving will not be enabled.
When a terminal connects on the host, it must assert the DTR signal. As this is a virtual control signal implemented on the USB interface, it is not physically present on the board. Asserting the DTR signal from the host will indicate to the on-board debugger that a CDC session is active. The debugger will then enable its level shifters (if available), and start the CDC data send and receive mechanisms.
Deasserting the DTR signal will not disable the level shifters but will disable the receiver so no further data will be streamed to the host. Data packets that are already queued up for sending to the target will continue to be sent out, but no further data will be accepted.
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Remember:  Set up the terminal emulator to assert the DTR signal. Without the signal, the on-board
debugger will not send or receive any data through its UART.
Tip:  The on-board debugger’s CDC TX pin will not be driven until the CDC interface is enabled by the host computer. Also, there are no external pull-up resistors on the CDC lines connecting the debugger and the target, which means that during power-up, these lines are floating. To avoid any glitches resulting in unpredictable behavior like framing errors, the target device should enable the internal pull-up resistor on the pin connected to the debugger’s CDC TX pin.
4.1.2.5 Advanced Use
CDC Override Mode
In normal operation, the on-board debugger is a true UART bridge between the host and the device. However, in certain use cases, the on-board debugger can override the basic operating mode and use the CDC TX and RX pins for other purposes.
Dropping a text file into the on-board debugger’s mass storage drive can be used to send characters out of the debugger’s CDC TX pin. The filename and extension are trivial, but the text file must start with the characters:
CMD:SEND_UART=
The maximum message length is 50 characters – all remaining data in the frame are ignored.
The default baud rate used in this mode is 9600 bps, but if the CDC is already active or has been configured, the previously used baud rate still applies.
USB-Level Framing Considerations
Sending data from the host to the CDC can be done byte-wise or in blocks, which will be chunked into 64-byte USB frames. Each such frame will be queued up for sending to the debugger’s CDC TX pin. Transferring a small amount of data per frame can be inefficient, particularly at low baud rates, because the on-board debugger buffers frames and not bytes. A maximum of four 64-byte frames can be active at any time. The on-board debugger will throttle the incoming frames accordingly. Sending full 64-byte frames containing data is the most efficient method.
When receiving data on the debugger’s CDC RX pin, the on-board debugger will queue up the incoming bytes into 64-byte frames, which are sent to the USB queue for transmission to the host when they are full. Incomplete frames are also pushed to the USB queue at approximately 100 ms intervals, triggered by USB start-of-frame tokens. Up to eight 64-byte frames can be active at any time.
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If the host (or the software running on it) fails to receive data fast enough, an overrun will occur. When this happens, the last-filled buffer frame will be recycled instead of being sent to the USB queue, and a full frame of data will be lost. To prevent this occurrence, the user must ensure that the CDC data pipe is being read continuously, or the incoming data rate must be reduced.

4.1.3 Mass Storage Device

The on-board debugger includes a simple Mass Storage Device implementation, which is accessible for read/write operations via the host operating system to which it is connected.
It provides:
• Read access to basic text and HTML files for detailed kit information and support
• Write access for programming Intel® HEX formatted files into the target device’s memory
• Write access for simple text files for utility purposes
4.1.3.1 Mass Storage Device Implementation
The on-board debugger implements a highly optimized variant of the FAT12 file system that has several limitations, partly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for its embedded application.
The Curiosity Nano USB Device is USB Chapter 9-compliant as a mass storage device but does not, in any way, fulfill the expectations of a general purpose mass storage device. This behavior is intentional.
When using the Windows operating system, the on-board debugger enumerates as a Curiosity Nano USB Device that can be found in the disk drives section of the device manager. The CURIOSITY drive appears in the file manager and claims the next available drive letter in the system.
The CURIOSITY drive contains approximately one MB of free space. This does not reflect the size of the target device’s Flash in any way. When programming an Intel® HEX file, the binary data are encoded in ASCII with metadata providing a large overhead, so one MB is a trivially chosen value for disk size.
It is not possible to format the CURIOSITY drive. When programming a file to the target, the filename may appear in the disk directory listing. This is merely the operating system’s view of the directory, which, in reality, has not been updated. It is not possible to read out the file contents. Removing and replugging the board will return the file system to its original state, but the target will still contain the application that has been previously programmed.
To erase the target device, copy a text file starting with “CMD:ERASE” onto the disk.
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By default, the CURIOSITY drive contains several read-only files for generating icons as well as reporting status and linking to further information:
AUTORUN.ICO – icon file for the Microchip logo
AUTORUN.INF – system file required for Windows Explorer to show the icon file
CLICK-ME.HTM – redirect to the PIC-IoT Wx web demo application
KIT-INFO.HTM – redirect to the development board website
KIT-INFO.TXT – a text file containing details about the board’s debugger firmware version, board name, USB serial number, device, and drag-and-drop support
PUBKEY.TXT – a text file containing the public key for data encryption
STATUS.TXT – a text file containing the programming status of the board
Info:  STATUS.TXT is dynamically updated by the on-board debugger. The contents may be cached by the OS and, therefore, do not reflect the correct status.
4.1.3.2 Configuration Words
Configuration Words (PIC® MCU Targets)
Configuration Word settings included in the project being programmed after program Flash is programmed. The debugger will not mask out any bits in the Configuration Words when writing them, but since it uses Low-Voltage Programming mode, it is unable to clear the LVP Configuration bit. If the incorrect clock source is selected, for
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example, and the board does not boot, it is always possible to perform a bulk erase (always done before programming) and restore the device to its default settings.
4.1.3.3 Special Commands
Several utility commands are supported by copying text files to the mass storage disk. The filename or extension is irrelevant – the command handler reacts to content only.
Table 4-2. Special File Commands
Command Content Description
CMD:ERASE
CMD:SEND_UART=
CMD:RESET
Info:  The commands listed here are triggered by the content being sent to the mass storage emulated disk, and no feedback is provided in the case of either success or failure.
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Executes a chip erase of the target
Sends a string of characters to the CDC UART. See “CDC Override Mode”.
Resets the target device by entering Programming mode and then exiting Programming mode immediately thereafter. Exact timing can vary according to the programming interface of the target device. (Debugger firmware v1.16 or newer.)

4.1.4 Data Gateway Interface (DGI)

Data Gateway Interface (DGI) is a USB interface for transporting raw and time-stamped data between on-board debuggers and host computer-based visualization tools. MPLAB Data Visualizer is used on the host computer to display debug GPIO data. It is available as a plug-in for MPLAB® X IDE or a stand-alone application that can be used in parallel with MPLAB X IDE.
Although DGI encompasses several physical data interfaces, the PIC-IoT Wx implementation includes logic analyzer channels:
• One debug GPIO channel (also known as DGI GPIO)
4.1.4.1 Debug GPIO
Debug GPIO channels are timestamped digital signal lines connecting the target application to a host computer visualization application. They are typically used to plot the occurrence of low-frequency events on a time-axis – for example, when certain application state transitions occur.
The figure below shows the monitoring of the digital state of a mechanical switch connected to a debug GPIO in MPLAB Data Visualizer.
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Figure 4-2. Monitoring Debug GPIO with MPLAB Data Visualizer
Debug GPIO channels are timestamped, so the resolution of DGI GPIO events is determined by the resolution of the DGI timestamp module.
Important:  Although bursts of higher-frequency signals can be captured, the useful frequency range of signals for which debug GPIO can be used is up to about 2 kHz. Attempting to capture signals above this frequency will result in data saturation and overflow, which may cause the DGI session to be aborted.
4.1.4.2 Timestamping
DGI sources are timestamped as they are captured by the debugger. The timestamp counter implemented in the Curiosity Nano debugger increments at 2 MHz frequency, providing a timestamp resolution of a half microsecond.

4.2 On-Board Debugger Connections

The table below shows the connections between the target and the debugger section. All connections between the target and the debugger are tri-stated as long as the debugger is not actively using the interface. Hence, since there are little contaminations of the signals, the pins can be configured to anything the user wants.
For further information on how to use the capabilities of the on-board debugger, see 4.1 On-Board Debugger
Overview.
Table 4-3. Debugger Connections
Debugger Pin PIC24FJ128GA705 Pin Function Shared Functionality
DBG0 ICSPDAT Program/Debug Data
DBG1 ICSPCLK Program/Debug Clock
DBG2 RA11 DGI GPIO0
DBG3 MCLR RESET
CDC TX RC9 UART RX
CDC RX RC8 UART TX
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4.3 Power

USB
Debugger

Power source

Cut strap
Power consumer
Power converter
VUSB
MIC33050
(buck)
MCP73871
Li-Ion / Li-Po
battery
charger

Battery Charger

Battery
Connector
(JST)
VCC_P3V3
VBAT
VMUX
cut-strap
Peripherals
mBUS
WINC1510
PIC24FJ128
GA705
cut-strap
WARNING
4.3.1 Power Source
The board can be powered through the USB port or by a Li-Ion/LiPo battery. The kit contains one buck converter for generating 3.3V for the debugger, target, and peripherals.
The maximum available current from the USB is limited to 500 mA. The current will be shared between charging the battery (if connected) and the target application section.
Figure 4-3. Power Supply Block Diagram
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4.3.2 Battery Charger
PIC-IoT Wx features an MCP73871 Li-Ion/LiPo charger and JST battery connector on board. The charger is configured to limit the charge current to 100 mA to prevent the overcharging of small capacity batteries. Minimum recommended battery capacity is 400 mAh.
Table 4-4. Charger Status LEDs
LEDs Function
Red (charging) The battery is being charged by the USB
Red (discharging) The battery voltage is low. Triggers if the voltage is under 3.1V.
Green Charge complete
Red and Green Timer Fault. The six-hour charge cycle has timed out before the complete

4.3.3 Hardware Modifications

On the bottom side of the PIC-IoT Wx board, there are two cut-straps as shown in the figure below. These are intended for current measurement purposes. Do not leave these unconnected as the microcontrollers might get powered through the I/O’s.
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The MCP73871 has a battery charge voltage of 4.2V. Make sure your battery has the same charge voltage.
charge.
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Figure 4-4. V
The 5V supply to the mikroBUS socket is connected by default. To remove 5V from the socket, desolder the 0-ohm resistor (0402) below the 5V text, as shown in the figure below.
Figure 4-5. mikroBUS™ 5V Footprint
CC

4.4 Peripherals

Cut-Straps

4.4.1 PIC24FJ128GA705

Microchip’s PIC24FJ128GA705 features 128KB of ECC Flash, 16KB of RAM, and eXtreme Low Power (XLP) with 16 MIPS performance. It has 12-bit ADC at 200ksps with 14 analog inputs, and a robust set of digital communications and timer with peripheral pin select. Within the same family, there are variants with 64KB or 256KB Flash for applications that require more or less memory. The PIC24FJ128GA705 is available in a 48-pin package, while other variants are available in 28-pin and 44-pin packages. The PIC24F family is ideally suited for low power IoT sensor node applications.

4.4.2 mikroBUS™ Socket

PIC-IoT Wx features a mikroBUS Socket footprint for expanding the functionality of the development kit using MikroElektronika Click Boards and other mikroBUS add-on boards. The socket is populated with two 1x8 2.54 mm pitch female headers and is ready to mount add-on boards.
Table 4-5. mikroBUS™ Socket Pinout
mikroBUS™ Socket Pin PIC24FJ128GA705 Pin Function Shared Functionality
AN RB14 AN6
RST RB15 GPIO
CS RA0 SPI2 SS
SCK RA1 SPI2 SCK
MISO RB0 SPI2 MISO
MOSI RB1 SPI2 MOSI
+3.3V V
DD
VCC_TARGET, 3.3V supply
GND GND Ground
PWM RC6 MCCP
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 16
PIC-IoT Wx Hardware User Guide
Hardware User Guide
...........continued
mikroBUS™ Socket Pin PIC24FJ128GA705 Pin Function Shared Functionality
INT RB7 GPIO
RX RB6 UART2 RX
TX RB5 UART2 TX
SCL RB8 I2C SCL1
SDA RB9 I2C SDA1
+5V VCC_MUX1, MCP73871
GND GND Ground
Info: 
1) A 0-ohm resistor has been soldered to connect the VCC_MUX pin to the mikroBUS socket. If an add-on module cannot handle 5V on this pin, the 0-ohm resistor has to be removed. For more information, see
4.3.3 Hardware Modifications.

4.4.3 WINC1510 Wi-Fi Module

Microchip's WINC1510 is a low-power consumption 802.11 b/g/n IoT module, specifically optimized for low-power IoT applications. The module integrates Power Amplifier (PA), Low-Noise Amplifier (LNA), switch, power management, and a printed antenna or a micro co-ax (U.FL) connector for an external antenna resulting in a small form factor (21.7x14.7x 2.1 mm) design. It is interoperable with various vendors’ 802.11 b/g/n access points. This module provides SPI ports to interface with a host controller.
WINC1510 provides internal Flash memory as well as multiple peripheral interfaces, including UART and SPI. The only external clock source needed for WINC1510 is the built-in, high-speed crystal or oscillator (26 MHz). WINC1510 is available in a QFN package or as a certified module.
The communication interface between the PIC24FJ128GA705 and the WINC1510 Wi-Fi module is SPI, together with some enable signals and interrupt. The rest of the connections are left unconnected.
Table 4-6. WINC1510 Connections
output
WIN1510 Pin PIC24FJ128GA705 Pin Function Shared Functionality
4 RESET_N RA2 GPIO
9 GND GND Ground
10 SPI_CFG VCC_TARGET
11 WAKE RA8 GPIO
12 GND GND Ground
13 IRQN RA12 EXT INT
15 SPI_MOSI RC0 SPI1 MOSI
16 SPI_SSN RC1 SPI1 SS
17 SPI_MISO RA13 SPI1 MISO
18 SPI_SCK RC2 SPI1 SCK
20 VBAT VCC_TARGET 3.3V supply
22 CHIP_EN RA3 GPIO
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 17
...........continued
WIN1510 Pin PIC24FJ128GA705 Pin Function Shared Functionality
23 VDDIO VCC_TARGET 3.3V supply
28 GND GND Ground
29 PADDLE GND

4.4.4 ATECC608A

The ATECC608A is a secure element from the Microchip CryptoAuthentication portfolio with advanced Elliptic Curve Cryptography (ECC) capabilities. With ECDH and ECDSA being built right in, this device is ideal for the rapidly growing Internet of Things (IoT) market by easily supplying the full range of security, such as confidentiality, data integrity, and authentication to systems with MCU or MPUs running encryption/decryption algorithms. Similar to all Microchip CryptoAuthentication products, the new ATECC608A employs ultra-secure, hardware-based cryptographic key storage and cryptographic countermeasures that eliminate any potential backdoors linked to software weaknesses.
ATECC608A CryptoAuthentication device on the PIC-IoT Wx board is used to authenticate the hardware with cloud providers to uniquely identify every board.
Note:  7-bit I2C address: 0x58.
Table 4-7. ATECC608A Connections
PIC-IoT Wx Hardware User Guide
Hardware User Guide
ATECC608A Pin PIC24FJ128GA7
05 Pin
SDA RB2 I2C SDA2 MCP9808
SCL RB3 I2C SCL2 MCP9808

4.4.5 Temperature Sensor

The MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.25°C/±0.5°C (typical/maximum) accuracy.
Additional features:
• Accuracy:
– ±0.25°C (typical) from -40°C to +125°C – ±0.5°C (maximum) from -20°C to +100°C
• User Selectable Measurement Resolution:
– 0.5°C, 0.25°C, 0.125°C, 0.0625°C
• User Programmable Temperature Limits:
– Temperature Window Limit – Critical Temperature Limit
• User Programmable Temperature Alert Output
• Operating Voltage Range:
– 2.7V to 5.5V
• Operating Current:
– 200 μA (typical)
• Shutdown Current:
– 0.1 μA (typical)
The MCP9808 temperature sensor is connected to the PIC24FJ128GA705 through I2C and a GPIO for the user­configurable alert output.
Note:  7-bit I2C address: 0x18.
Function Shared Functionality
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 18
Table 4-8. MCP9808
PIC-IoT Wx Hardware User Guide
Hardware User Guide
MCP9808 Pin PIC24FJ128GA7
SDA RB2 I2C SDA2 ATECC608A
SCL RB3 I2C SCL2 ATECC608A
Alert RB13 External Interrupt

4.4.6 Light Sensor

A TEMT6000X01 light sensor is mounted on the PIC-IoT Wx board for measuring the light intensity. The sensor is a current source that will induce a voltage across the series resistor, which in turn can be measured by the PIC24FJ128GA705 ADC. The current is exponentially relative to illuminance, from about 10 µA@20lx to 50 µA@100lx. The series resistor has a value of 10 kΩ.
Table 4-9. Light Sensor Connection
PIC24FJ128GA705 Pin
RB12 ADC AN8

4.4.7 LED

There are four LEDs available on the PIC-IoT Wx board that can be controlled with PWM or GPIO. The LEDs can be activated by driving the connected I/O line to GND.
Table 4-10. LED Connections
PIC24FJ128GA705 Pin
Function Shared Functionality
05 Pin
Function Shared Functionality
Function Description
RB4 OCM2A Red LED
RC3 OCM2B Yellow LED
RC4 OCM3A Green LED
RC5 OCM3B Blue LED

4.4.8 Mechanical Buttons

PIC-IoT Wx contains two mechanical buttons. These are generic user-configurable buttons. When a button is pressed, it will drive the connected I/O line to ground (GND).
Info:  There are no pull-up resistors connected to the generic user buttons. Remember to enable the internal pull-up in the PIC24FJ128GA705 to use the buttons.
Table 4-11. Mechanical Button
PIC24FJ128GA705 Pin
RA7 User switch 0 (SW0)
RA10 User switch 1 (SW1)
Description Shared Functionality
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 19

5. Regulatory Approval

The PIC-IoT Wx development board has been testedby the following standards:
Emission:
• FCC Part 15 subpart B:2018 (Class B)
• EN55032:2015 (Class B)
Immunity:
• EN55024:2010+A1:2015
• EN61000-4-2:2009 (contact: level 2 (±4 kV), air: level3 (±8 kV))
• EN61000-4-3:2006+A2:2010 (80 - 1000 MHz, level 2 (3 V/M))
• EN61000-4-8:2010 (level 2 (3 A/m), continuous field)
The development board contains the wireless transmitter module ATWINC1510-MR210PB, which has the following approval and/or registrations:
• United States/FCC ID: 2ADHKATWINC1510
• Canada
– IC: 20266-ATWINC1510 – HVIN: ATWINC1510-MR210PB – PMN: ATWINC1510-MR210PB
• Europe - CE
• Japan/MIC: 005-101762
• Korea/KCC: R-CRM-mcp-WINC1510MR210P
• Taiwan/NCC: CCAN18LP0320T0
• China/SRRC: CMIIT ID: 2018DJ1310
PIC-IoT Wx Hardware User Guide
Regulatory Approval

5.1 United States

Contains Transmitter Module FCC ID: 2ADHKATWINC1510.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help

5.2 Canada

Contains IC: 20266-ATWINC1510.
This device complies with Industry Canada's license-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 20
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Guidelines on Transmitter Antenna for License Exempt Radio Apparatus:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établisse-ment d'une communication satisfaisante.

5.3 Taiwan

Contains module: CCAN18LP0320T0.
注意 !
依據 低功率電波輻射性電機管理辦法
第十二條 經型式認證合格之低功率射頻電機,非經許 可, 公司、商號或使用者均不得擅自變更頻率、加大功率或 變 更原設計 之特性及功能。
第十四條 低功率射頻電機之使用不得影響飛航安全及 干擾合法通信; 經發現有干擾現象時,應立即停用,並改善至無 干擾時 方得繼續使用。
前項合法通信,指依電信規定作業之無線電信。
低功率射頻電機須忍受合法通信或工業、科學及醫療用 電波輻射性 電機設備之干擾。
PIC-IoT Wx Hardware User Guide
Regulatory Approval

5.4 List of Antenna Types

ATWINC1510-MR210 does not allow the use of external antennas and is tested with the PCB antenna on the module.
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 21
PIC-IoT Wx Hardware User Guide
Hardware Revision History and Known Issues

6. Hardware Revision History and Known Issues

This user guide is written to provide information about the latest available revision of the board. The following sections contain information about known issues, a revision history of older revisions, and how older revisions differ from the latest revision.

6.1 Identifying Product ID and Revision

The revision and product identifier of the PIC-IoT Wx board can be found in two ways: Either by utilizing the MPLAB X IDE Kit Window or by looking at the sticker on the bottom side of the PCB.
By connecting a PIC-IoT Wx to a computer with MPLAB X IDE running, the Kit Window will pop up. The first six digits of the serial number, which is listed under kit information, contain the product identifier and revision.
Tip:  The Kit Window can be opened in MPLAB® X IDE through the menu bar Window > Kit Window.
The same information can be found on the sticker on the bottom side of the PCB. Most boards will have the identifier and revision printed in plain text as A09-nnnn\rr, where “nnnn” is the identifier, and “rr” is the revision. Boards with limited space have a sticker with only a data matrix code, containing the product identifier, revision, and serial number.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for PIC-IoT WG is A09-3261.
The product identifier for PIC-IoT WA is A09-3352.

6.2 PIC-IoT WG

6.2.1 Revision 3

Revision 3 of PIC-IoT WG has 5V applied to the mikroBUS socket by default (R204 is populated). It is otherwise identical to revision 2.

6.2.2 Revision 2

Revision 2 of PIC-IoT WG is the initial released revision. R204, the 0-ohm resistor that applies 5V to mikroBUS socket, is not populated on this revision.

6.3 PIC-IoT WA

6.3.1 Revision 1

Revision 1 of PIC-IoT WA is the initial released revision. The hardware is identical to PIC-IoT WG revision 3.
Reconfiguration of Wi-Fi credentials does not work with the application firmware preprogrammed on this revision of the kit. Follow the instructions in 2.1 Quick Start to download and upgrade the application firmware.
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 22

7. Document Revision History

Doc. rev. Date Comment
A 03/2020 Initial document release.
PIC-IoT Wx Hardware User Guide
Document Revision History
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 23
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Project Title
PCB Assembly Number: PCBA Revision:
File:
PCB Number: PCB Revision:
Designed with
Drawn By:
TF
Sheet Title
Target MCU
Engineer:
TF
A08-2993 1
Size
A3
A09-3352 1
Page:
Date:
Altium.com
100n
C204
GND
VCC_TARGET
GND
100n
C200
1k
R213
USER LE DS
VCC_TARGET
RA7_SW0
USER BUTT ONS
330R
R207
PIC24FJ128GA705
DBG0
CDC_UART
TX
RX
UART
DBG1
DBG2
2185-108SS0CYNP1
1234567
8
J201
2185-108SS0CYNP1
1234567
8
J202
mikr oBUS
GND GND
AN
RSTCSSCK
MISO
MOSI
+3.3V
GND
PWM
INT
RXTXSCL
SDA
+5V
GND
Head er (Fema le)
TM
WINC1510
10uF
C203
10nF
C202
1 2
43
5
KMR221G
SW200
330R
R208
1 2
43
5
KMR221G
SW201
1k
R212
1k
R209
1k
R206
GND
SDA
5
SCL
6
GND
4
VCC8PAD
9
NC1NC2NC3NC
7
U202
GND
GND
100k
R200
RC1_SPI_SS
VCC_TARGET
VCC_TARGET
RB8_I2C1_SCL
RB9_I2C1_SDA
VCC_TARGET
GND
100n
C205
RB0_SPI_MISO
RA1_SPI_SCK
RB1_SPI_MOSI
RA10_SW1
GND
Cr yptoAuth enticat ionTM Temperat ure Sensor
GND
VCC_TARGET
100k
R211
VCC_TARGET
4.7k R202
4.7k R203
VCC_TARGET
VCC_TARGET
TP202
TP204
TP205
TP206
TP203
2 1
GREEN LED
SML-P12MTT86R
D201
RED LED
SML-P12VTT86R
2 1
D200
I2C address: 0x18
WINC_UART_RX
WINC_UART_TX
RC6_OCMxn_PWM
RA2_WINC_RST
RB15_MBUS_RST
RA8_WINC_WAKE
RA3_WINC_EN
WINC_SPI_CFG
RB3_I2C2_SCL
RB2_I2C2_SDA
RB14_MBUS_AIN
RB7_MBUS_INT
RB13_TEMP_INT
VCC_P1V3
2 1
YELLOW LED
SML-P12YTT86R
D203
Default I2C address: 0x58
2 1
BLUE LED
SMLP13BC8TT86
D202
VCC_TARGET
VCC_TARGET
12
TEMT6000
Q200
GND
VCC_TARGET
SDA
1
SCL2ALERT3GND
4
A25A16A0
7
VDD
8
EP
9
MCP9808U203
GND
RB5_UART2_TX
RB6_UART2_RXRA0_SPI_CS
Light Sensor
RB12_LIGHT_SENS
TP201
TP200
10k
R210
100n
C206
SW1
SW0
100k R201
GND
VCC_MUX0R
R204
+5V
TP207
TP208
TP209 GND
GND
RB10_ICSPDAT
RB11_ICSPCLK
MCLR
ERR
DATA
CONN
WIFI
ATECC608A
ATWINC1510-MR210PB1961
RESET_N
4
CHIP_EN
22
VDDIO
23
VBAT
20
WAKE11UART_TXD14UART_RXD
19
NC
7
1P3V_TP
24
SPI_SCK18SPI_MISO17SPI_MOSI15SPI_SSN
16
SPI_CFG
10
GPIO_6
1
GPIO_5
27
GPIO_4
26
GPIO_3
25
I2C_SCL
2
I2C_SDA
3
GPIO_1/RTC
21
NC5NC6NC
8
IRQN
13
GND
28
GND
12
GND
9
PADDLE
29
U200
DBG3
RA13_SPI_MISO
RC2_SPI_SCK
RC0_SPI_MOSI
RB3_I2C2_SCL
RB2_I2C2_SDA
RA11_DGI_DBG2
4.7k R215
4.7k
R216
VCC_TARGET
4.7k
R214
4.7k R205
GND
VCC_TARGET
100n
C208
GND VCC_TARGET
RB10_ICSPDAT
RB11_ICSPCLK
MCLR
GND
RB3_I2C2_SCL RB2_I2C2_SDA
RB9_I2C1_SDA
RB8_I2C1_SCL
VCAP
RB91RC62RC73RC84RC95VSS6VCAP7RA118RB10/PGD2
9
RB11/PGC210RB1211RB13
12
RA10
13
RA7
14
RB14
15
RB15
16
AVSS
17
AVDD
18
MCLR
19
RA12
20
RA0
21
RA1
22
RB0/PGD1
23
RB1/PGC1
24
RB225RB326RC027RC128RC229VDD30VSS
31
RA13
32
OSCI/RA233OSCO/RA3
34
RA8
35
SOSCI/RB4
36
RA4
37
RA9
38
RC3
39
RC4
40
RC5
41
VSS
42
VDD
43
RA14
44
PGD3/RB5
45
PGC3/RB6
46
RB7
47
RB8
48
EP
49
PIC24FJ128GA705T-I/M4
U201
RC0_SPI_MOSI
RB14_MBUS_AIN
RB15_MBUS_RST
RB12_LIGHT_SENS
RC1_SPI_SS
RB6_UART2_RX
RB5_UART2_TX
RB7_MBUS_INT
RA13_SPI_MISO
RC2_SPI_SCK
RA3_WINC_EN
RA8_WINC_WAKE
RA2_WINC_RST
RB4_OCMxn_ERROR
RC4_OCMxn_CONN
RC5_OCMxn_WIFI
RC3_OCMxn_DATA
RA12_WINC_INT
RC8_CDC_TX
RB13_TEMP_INT
RC9_CDC_RX
RA10_SW1
RA7_SW0
RA11_DGI_DBG2
RA12_WINC_INT
RB4_OCMxn_ERROR
RC4_OCMxn_CONN
RC5_OCMxn_WIFI
RC3_OCMxn_DATA
RC8_CDC_TX
RC9_CDC_RX
RC6_OCMxn_PWM
RB0_SPI_MISO RA1_SPI_SCK
RB1_SPI_MOSI
RA0_SPI_CS
10uF/16V
C207
10k
R217
PIC-IoT Wx Hardware User Guide
Appendix

8. Appendix

8.1 Schematic

Figure 8-1. PIC-IoT Wx Schematic
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 24
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File:
PCB Number: PCB Revision:
Designed with
Drawn By:
TF
Sheet Title
Debugger
Engineer:
TF
A08-2993 1
Size
A3
A09-3352 1
Page:
Date:
Altium.com
DEBUGGE R USB MIC RO-B CONNE CTOR
GND
USBD_P
USBD_N
100n
C107
100n
C108
RX
TX
UART
CDC_UART
1k
R106
VCC_DEBUGGER
100n
C105
GND
SRST
STATUS_LED
SHIELD
VBUS
VCC_DEBUGGER
GND
TP100
Testpoint Array
1 2
3 4
5 6
7 8
9 10
TCK
TDO
TMS
Vsup
TDI GND
TRST
SRST
VTref
GND
J102
DBG0
21
GREEN LED
SML-P12MTT86R
D102
VBUS1D-2D+3GND5SHIELD16SHIELD27ID4SHIELD38SHIELD4
9
MU-MB0142AB2-269
J103
PAD
33
PA001PA012PA023PA03
4
GND
10
VDDANA
9
PA045PA056PA067PA07
8
PA08
11
PA09
12
PA10
13
PA11
14
PA14
15
PA15
16
PA1617PA1718PA1819PA1920PA22
21
USB_SOF/PA23
22
USB_DM/PA2423USB_DP/PA25
24
PA27
25
RESETN
26
PA28
27
GND
28
VDDCORE
29
VDDIN
30
SWDCLK/PA30
31
SWDIO/PA31
32
SAMD21E18A-MUT
U100
USBD_P
USBD_N
GND
1u
C106
VCC_MCU_CORE
VCC_DEBUGGER
VCC_DEBUGGER
GND
GND
GND
GND
DBG2
S1_0_TX
S0_2_TX
DAC
VTG_ADC
RESERVED
S0_3_CLK
DBG0_CTRL
CDC_TX_CTRL
BOOT
DEBUGGE R POWE R/STATUS LED
1k
R110
DBG1
DBG1_CTRL
REG_ENABLE
100k
R107
100k
R108
SWCLK
100k
R113
GND
SRST
DEBUGGE R TEST POINT
DBG2_CTRL
CDC_RX_CTRL
100k
R111
SWCLK
DBG2_GPIO
VBUS_ADC
VTG_ADC
ID_SYS
VTG_EN
VBUS_ADC
SWDIO
SWDIO
GND
VOFF
VCC_DEBUGGER
330R
R112
330R
R114
330R
R109
Crossing RX/TX here!
DBG0
DBG2
S1_1_RX
S0_0_RX
VCC_P3V3
GND
GND
4.7uF
C100
GND
Li-Po/Li-Ion Battery
4.7uF
C101
GND
560p
C102
SW
4
PGND
2
VOUT
7
SNS
10
EN
9
VOUT
8
SW
5
VIN
1
AGND
12
EP
13
SW3SW
6
FB/CFF
11
MIC33050-SYHLU102
100k
R100
1k
R102
RED LED
SML-P12VTT86R
2 1
D101
J100
10k
R103
GND
10uF
C103
MCP73871
OUT
1
VPCC
2
SEL3PROG2
4
THERM
5
PG
6
STAT2
7
STAT1/LBO
8TE9
IN18IN
19
CE
17
VSS
10
VSS
11
EP
21
PROG312PROG1
13
VBAT14VBAT15VBAT
16
OUT
20
U101
GND
4.7uF
C104
GND
VBUS
10k
R104
GND
GND
VBUS
100k
R105
1k
R101
VCC_BAT
POWE R SUPPLY AND BATTERY CH ARGER
2 1
GREEN LED
SML-P12MTT86R
D100
1
2
J101
VCC_MUX
VCC_MUX
J104
VCC_DEBUGGER
VCC_TARGET
DBG1
VBUS
DBG3
GND
DBG3_CTRL
1
2 3
DMN65D8LFB
Q100
1k
R115
DBG3_CTRL
DBG3 OP EN DRAIN
Signal
DBG0
DBG1
DBG2
DBG3
ICSP
Interface
DAT
CLK
GPIO
MCLR
CDC TX
CDC RX
UART RX
UART TX
TARGET
VCC -
Programming connector
for factory programming of
the Debugger
MIC33050:
Vin: 2.5V to 5.5V
Vout: Fixed 3.3V
Imax: 600mA
PIC-IoT Wx Hardware User Guide
Appendix
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 25

8.2 Assembly Drawing

®
PAC10002 PAC10001
COC100
PAC10102
PAC10101
COC101
PAC10201
PAC10202
COC102
PAC10302 PAC10301
COC103
PAC10402
PAC10401
COC104
PAC10502
PAC10501
COC105
PAC10602
PAC10601
COC106
PAC10702
PAC10701
COC107
PAC10802
PAC10801
COC108
PAC20002
PAC20001
COC200
PAC20202
PAC20201
COC202
PAC20302
PAC20301
COC203
PAC20402
PAC20401
COC204
PAC20502
PAC20501
COC205
PAC20602
PAC20601
COC206
PAC20701 PAC20702
COC207
PAC20801
PAC20802
COC208
PAD10002
PAD10001
COD100
PAD10101
PAD10102
COD101
PAD10201
PAD10202
COD102
PAD20001
PAD20002
COD200
PAD20101
PAD20102
COD201
PAD20201
PAD20202
COD202
PAD20301
PAD20302
COD203
PAJ10001 PAJ10002
COJ100
PAJ10102
PAJ10101
PAJ10100
COJ101
PAJ10206
PAJ10205
PAJ10204
PAJ10203
PAJ10202
PAJ10201
COJ102
PAJ103011
PAJ103010
PAJ10308
PAJ10309
PAJ10307
PAJ10306
PAJ10301 PAJ10302 PAJ10303 PAJ10304 PAJ10305
PAJ10300
COJ103
PAJ10402 PAJ10401
COJ104
PAJ20105
PAJ20106
PAJ20108
PAJ20107
PAJ20103
PAJ20104
PAJ20102
PAJ20101
PAJ20100
COJ201
PAJ20205
PAJ20206
PAJ20208
PAJ20207
PAJ20203
PAJ20204
PAJ20202
PAJ20201
PAJ20200
COJ202
COLABEL1
PAQ10001 PAQ10002
PAQ10003
COQ100
PAQ20002
PAQ20003
PAQ20001
COQ200
PAR10002
PAR10001
COR100
PAR10102
PAR10101
COR101
PAR10202
PAR10201
COR102
PAR10302
PAR10301
COR103
PAR10402
PAR10401
COR104
PAR10502
PAR10501
COR105
PAR10601
PAR10602
COR106
PAR10701
PAR10702
COR107
PAR10801
PAR10802
COR108
PAR10901
PAR10902
COR109
PAR11002
PAR11001
COR110
PAR11102
PAR11101
COR111
PAR11201
PAR11202
COR112
PAR11301
PAR11302
COR113
PAR11402
PAR11401
COR114
PAR11502
PAR11501
COR115
PAR20001
PAR20002
COR200
PAR20102 PAR20101
COR201
PAR20201
PAR20202
COR202
PAR20301
PAR20302
COR203
PAR20401
PAR20402
COR204
PAR20502
PAR20501
COR205
PAR20601
PAR20602
COR206
PAR20702 PAR20701
COR207
PAR20801
PAR20802
COR208
PAR20901
PAR20902
COR209
PAR21001
PAR21002
COR210
PAR21101
PAR21102
COR211
PAR21201
PAR21202
COR212
PAR21302
PAR21301
COR213
PAR21402
PAR21401
COR214
PAR21502
PAR21501
COR215
PAR21602
PAR21601
COR216
PAR21702
PAR21701
COR217
PASW20005
PASW20002
PASW20001
PASW20004
PASW20003
COSW200
PASW20105
PASW20102
PASW20101
PASW20104
PASW20103
COSW201
PATP10001
COTP100
PATP20001
COTP200
PATP20101
COTP201
PATP20201
COTP202
PATP20301
COTP203
PATP20401
COTP204
PATP20501
COTP205
PATP20601
COTP206
PATP20701
COTP207
PATP20801
COTP208
PATP20901
COTP209
PAU10009
PAU10008
PAU10007
PAU10006
PAU10005
PAU10004
PAU10003
PAU10002
PAU10001
PAU100010
PAU100011
PAU100012
PAU100013
PAU100014
PAU100015
PAU100016
PAU100017
PAU100018
PAU100019
PAU100020
PAU100021
PAU100022
PAU100023
PAU100024
PAU100025
PAU100026
PAU100027 PAU100028
PAU100029 PAU100030
PAU100031
PAU100032
PAU100033
COU100
PAU10101
PAU10102
PAU10103
PAU10104
PAU10105
PAU10106
PAU10107
PAU10108
PAU10109
PAU101010
PAU101011
PAU101012
PAU101013
PAU101014
PAU101015
PAU101016 PAU101017
PAU101018
PAU101019
PAU101020
PAU101021
COU101
PAU102013
PAU10207
PAU10208
PAU10209
PAU102010
PAU102011
PAU102012
PAU10206
PAU10205
PAU10204
PAU10203
PAU10202
PAU10201
COU102
PAU200028
PAU200027
PAU200026
PAU200025
PAU200024
PAU200023
PAU200022
PAU200021
PAU200020
PAU200015
PAU200016
PAU200017
PAU200018
PAU200019
PAU200014
PAU200013
PAU200012
PAU200011
PAU20009
PAU20008
PAU20007
PAU20006
PAU20005
PAU20004
PAU20003
PAU20002
PAU20001
PAU200010
PAU200029
COU200
PAU20101 PAU20102
PAU20103 PAU20104 PAU20105 PAU20106 PAU20107
PAU20108 PAU20109 PAU201010 PAU201011 PAU201012
PAU201013
PAU201014
PAU201015
PAU201016
PAU201017
PAU201018
PAU201019
PAU201020
PAU201021
PAU201022
PAU201023
PAU201024
PAU201025
PAU201026
PAU201027
PAU201028
PAU201029
PAU201030
PAU201031
PAU201032
PAU201033
PAU201034
PAU201035
PAU201036
PAU201037
PAU201038
PAU201039
PAU201040
PAU201041
PAU201042
PAU201043
PAU201044
PAU201045
PAU201046
PAU201047
PAU201048
PAU201049
PAU20100
COU201
PAU20208 PAU20207
PAU20206
PAU20205
PAU20204
PAU20203
PAU20202
PAU20201
PAU20209
COU202
PAU20309
PAU20301
PAU20302
PAU20304 PAU20303
PAU20306
PAU20305
PAU20307 PAU20308
PAU20300
COU203
RB5 / TX
GNDGND
LABEL
AN / RB14RC6 / PWM
SCK / R A1
MISO / R B0RB8 / SCL
®
c
PCBA
CS / RA 0RB6 / RX
+3.3V+5V
RST / RB15RB7 / INT
MOSI / R B1RB9 / SDA
t
-IoT
PIC
E
R
PAC10002 PAC10001
COC100
PAC10102
PAC10101
COC101
PAC10201
PAC10202
COC102
PAC10302 PAC10301
COC103
PAC10402
PAC10401
COC104
PAC10502
PAC10501
COC105
PAC10602
PAC10601
COC106
PAC10702
PAC10701
COC107
PAC10802
PAC10801
COC108
PAC20002
PAC20001
COC200
PAC20202
PAC20201
COC202
PAC20302
PAC20301
COC203
PAC20402
PAC20401
COC204
PAC20502
PAC20501
COC205
PAC20602
PAC20601
COC206
PAC20701 PAC20702
COC207
PAC20801
PAC20802
COC208
PAD10002
PAD10001
COD100
PAD10101
PAD10102
COD101
PAD10201
PAD10202
COD102
PAD20001
PAD20002
COD200
PAD20101
PAD20102
COD201
PAD20201
PAD20202
COD202
PAD20301
PAD20302
COD203
PAJ10001 PAJ10002
COJ100
PAJ10102
PAJ10101
PAJ10100
COJ101
PAJ10206
PAJ10205
PAJ10204
PAJ10203
PAJ10202
PAJ10201
COJ102
PAJ103011
PAJ103010
PAJ10308
PAJ10309
PAJ10307
PAJ10306
PAJ10301 PAJ10302 PAJ10303 PAJ10304 PAJ10305
PAJ10300
COJ103
PAJ10402 PAJ10401
COJ104
PAJ20105
PAJ20106
PAJ20108
PAJ20107
PAJ20103
PAJ20104
PAJ20102
PAJ20101
PAJ20100
COJ201
PAJ20205
PAJ20206
PAJ20208
PAJ20207
PAJ20203
PAJ20204
PAJ20202
PAJ20201
PAJ20200
COJ202
COLABEL1
PAQ10001 PAQ10002
PAQ10003
COQ100
PAQ20002
PAQ20003
PAQ20001
COQ200
PAR10002
PAR10001
COR100
PAR10102
PAR10101
COR101
PAR10202
PAR10201
COR102
PAR10302
PAR10301
COR103
PAR10402
PAR10401
COR104
PAR10502
PAR10501
COR105
PAR10601
PAR10602
COR106
PAR10701
PAR10702
COR107
PAR10801
PAR10802
COR108
PAR10901
PAR10902
COR109
PAR11002
PAR11001
COR110
PAR11102
PAR11101
COR111
PAR11201
PAR11202
COR112
PAR11301
PAR11302
COR113
PAR11402
PAR11401
COR114
PAR11502
PAR11501
COR115
PAR20001
PAR20002
COR200
PAR20102 PAR20101
COR201
PAR20201
PAR20202
COR202
PAR20301
PAR20302
COR203
PAR20401
PAR20402
COR204
PAR20502
PAR20501
COR205
PAR20601
PAR20602
COR206
PAR20702 PAR20701
COR207
PAR20801
PAR20802
COR208
PAR20901
PAR20902
COR209
PAR21001
PAR21002
COR210
PAR21101
PAR21102
COR211
PAR21201
PAR21202
COR212
PAR21302
PAR21301
COR213
PAR21402
PAR21401
COR214
PAR21502
PAR21501
COR215
PAR21602
PAR21601
COR216
PAR21702
PAR21701
COR217
PASW20005
PASW20002
PASW20001
PASW20004
PASW20003
COSW200
PASW20105
PASW20102
PASW20101
PASW20104
PASW20103
COSW201
PATP10001
COTP100
PATP20001
COTP200
PATP20101
COTP201
PATP20201
COTP202
PATP20301
COTP203
PATP20401
COTP204
PATP20501
COTP205
PATP20601
COTP206
PATP20701
COTP207
PATP20801
COTP208
PATP20901
COTP209
PAU10009
PAU10008
PAU10007
PAU10006
PAU10005
PAU10004
PAU10003
PAU10002
PAU10001
PAU100010
PAU100011
PAU100012
PAU100013
PAU100014
PAU100015
PAU100016
PAU100017
PAU100018
PAU100019
PAU100020
PAU100021
PAU100022
PAU100023
PAU100024
PAU100025
PAU100026
PAU100027 PAU100028
PAU100029 PAU100030
PAU100031
PAU100032
PAU100033
COU100
PAU10101
PAU10102
PAU10103
PAU10104
PAU10105
PAU10106
PAU10107
PAU10108
PAU10109
PAU101010
PAU101011
PAU101012
PAU101013
PAU101014
PAU101015
PAU101016 PAU101017
PAU101018
PAU101019
PAU101020
PAU101021
COU101
PAU102013
PAU10207
PAU10208
PAU10209
PAU102010
PAU102011
PAU102012
PAU10206
PAU10205
PAU10204
PAU10203
PAU10202
PAU10201
COU102
PAU200028
PAU200027
PAU200026
PAU200025
PAU200024
PAU200023
PAU200022
PAU200021
PAU200020
PAU200015
PAU200016
PAU200017
PAU200018
PAU200019
PAU200014
PAU200013
PAU200012
PAU200011
PAU20009
PAU20008
PAU20007
PAU20006
PAU20005
PAU20004
PAU20003
PAU20002
PAU20001
PAU200010
PAU200029
COU200
PAU20101 PAU20102
PAU20103 PAU20104 PAU20105 PAU20106 PAU20107
PAU20108 PAU20109 PAU201010 PAU201011 PAU201012
PAU201013
PAU201014
PAU201015
PAU201016
PAU201017
PAU201018
PAU201019
PAU201020
PAU201021
PAU201022
PAU201023
PAU201024
PAU201025
PAU201026
PAU201027
PAU201028
PAU201029
PAU201030
PAU201031
PAU201032
PAU201033
PAU201034
PAU201035
PAU201036
PAU201037
PAU201038
PAU201039
PAU201040
PAU201041
PAU201042
PAU201043
PAU201044
PAU201045
PAU201046
PAU201047
PAU201048
PAU201049
PAU20100
COU201
PAU20208 PAU20207
PAU20206
PAU20205
PAU20204
PAU20203
PAU20202
PAU20201
PAU20209
COU202
PAU20309
PAU20301
PAU20302
PAU20304 PAU20303
PAU20306
PAU20305
PAU20307 PAU20308
PAU20300
COU203
100mil
1000m il
100mil
600mil
200mil
100mil
800mil
200mil
2500mil
100mil
R 1,20mm x 2
R 100mil x 4
16,46mm
R 1,60mm x 4
Figure 8-2. PIC-IoT Wx Assembly Drawing Top
Figure 8-3. PIC-IoT Wx Assembly Drawing Bottom
PIC-IoT Wx Hardware User Guide
Appendix

8.3 Mechanical Drawings

The figures below show the board’s mechanical drawing and connector placement.
Figure 8-4. Mechanical Drawing
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 26
Figure 8-5. Connector Placement
800mil
500mil
USB
900mil
8,93mm
100mil
LIPO
BATTERY
PIC-IoT Wx Hardware User Guide
Appendix
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 27
PIC-IoT Wx Hardware User Guide

The Microchip Website

Microchip provides online support via our website at http://www.microchip.com/. This website is used to make files and information easily available to customers. Some of the content available includes:
Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s
guides and hardware support documents, latest software releases and archived software
General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online
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Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of
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Microchip’s product change notification service helps keep customers current on Microchip products. Subscribers will receive email notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.
To register, go to http://www.microchip.com/pcn and follow the registration instructions.

Customer Support

Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Embedded Solutions Engineer (ESE)
• Technical Support
Customers should contact their distributor, representative or ESE for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in this document.
Technical support is available through the website at: http://www.microchip.com/support

Microchip Devices Code Protection Feature

Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Legal Notice

Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 28
PIC-IoT Wx Hardware User Guide
your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights unless otherwise stated.

Trademarks

The Microchip name and logo, the Microchip logo, Adaptec, AnyRate, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PackeTime, PIC, picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TempTrackr, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, FlashTec, Hyper Speed Control, HyperLight Load, IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire, SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub, TimePictra, TimeProvider, Vite, WinPath, and ZL are registered trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BlueSky, BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.
The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registered trademarks of Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their respective companies.
©
2020, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 978-1-5224-5656-8

Quality Management System

For information regarding Microchip’s Quality Management Systems, please visit http://www.microchip.com/quality.
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 29

Worldwide Sales and Service

AMERICAS ASIA/PACIFIC ASIA/PACIFIC EUROPE
Corporate Office
2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support:
http://www.microchip.com/support
Web Address:
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India - Pune
Tel: 91-20-4121-0141
Japan - Osaka
Tel: 81-6-6152-7160
Japan - Tokyo
Tel: 81-3-6880- 3770
Korea - Daegu
Tel: 82-53-744-4301
Korea - Seoul
Tel: 82-2-554-7200
Malaysia - Kuala Lumpur
Tel: 60-3-7651-7906
Malaysia - Penang
Tel: 60-4-227-8870
Philippines - Manila
Tel: 63-2-634-9065
Singapore
Tel: 65-6334-8870
Taiwan - Hsin Chu
Tel: 886-3-577-8366
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Taiwan - Taipei
Tel: 886-2-2508-8600
Thailand - Bangkok
Tel: 66-2-694-1351
Vietnam - Ho Chi Minh
Tel: 84-28-5448-2100
Austria - Wels
Tel: 43-7242-2244-39 Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4485-5910 Fax: 45-4485-2829
Finland - Espoo
Tel: 358-9-4520-820
France - Paris
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany - Garching
Tel: 49-8931-9700
Germany - Haan
Tel: 49-2129-3766400
Germany - Heilbronn
Tel: 49-7131-72400
Germany - Karlsruhe
Tel: 49-721-625370
Germany - Munich
Tel: 49-89-627-144-0 Fax: 49-89-627-144-44
Germany - Rosenheim
Tel: 49-8031-354-560
Israel - Ra’anana
Tel: 972-9-744-7705
Italy - Milan
Tel: 39-0331-742611 Fax: 39-0331-466781
Italy - Padova
Tel: 39-049-7625286
Netherlands - Drunen
Tel: 31-416-690399 Fax: 31-416-690340
Norway - Trondheim
Tel: 47-72884388
Poland - Warsaw
Tel: 48-22-3325737
Romania - Bucharest
Tel: 40-21-407-87-50
Spain - Madrid
Tel: 34-91-708-08-90 Fax: 34-91-708-08-91
Sweden - Gothenberg
Tel: 46-31-704-60-40
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800 Fax: 44-118-921-5820
© 2020 Microchip Technology Inc.
User Guide
DS50002964A-page 30
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