ATTINY104-XNANO

ATtiny104 Xplained Nano ATtiny104 Xplained Nano Evaluation Kit User's Guide Preface The Microchip ATtiny104 Xplained Nano Evaluation Kit is a hardware platform to evaluate the ATtiny104 microcontroller. Supported by the Atmel Studio and MPLAB® X integrated development platform, the kit provides easy access to the features of the Microchip ATtiny104 and explains how to integrate the device in a custom design. The Xplained Nano MCU series evaluation kits include an on-board mini embedded programmer, and no external tools are necessary to program the ATtiny104. © 2019 Microchip Technology Inc. User Guide DS40002160A-page 1 ATtiny104 Xplained Nano Table of Contents Preface........................................................................................................................................................... 1 1. Introduction............................................................................................................................................. 3 1.1. 1.2. 2. Getting Started........................................................................................................................................ 4 2.1. 2.2. 3. Tiny Program Interface............................................................................................................... 11 Virtual COM Port.........................................................................................................................11 Hardware Revision History and Known Issues..................................................................................... 12 6.1. 6.2. 6.3. 6.4. 7. Connectors................................................................................................................................... 9 Current Measurement.................................................................................................................. 9 Peripherals................................................................................................................................. 10 Embedded Debugger Implementation...................................................................................................11 5.1. 5.2. 6. Mini Embedded Debugger............................................................................................................6 Power Sources............................................................................................................................. 6 Xplained Nano Standard Pinout................................................................................................... 7 Disconnecting mEDBG.................................................................................................................8 Hardware User Guide............................................................................................................................. 9 4.1. 4.2. 4.3. 5. Xplained Nano Quick Start........................................................................................................... 4 Design Documentation and Relevant Links................................................................................. 4 Xplained Nano.........................................................................................................................................6 3.1. 3.2. 3.3. 3.4. 4. Features....................................................................................................................................... 3 Kit Overview................................................................................................................................. 3 Identifying Product ID and Revision........................................................................................... 12 Fuse Masking............................................................................................................................. 12 Revision 2...................................................................................................................................12 Revision 1...................................................................................................................................12 Document Revision History...................................................................................................................13 The Microchip Website.................................................................................................................................14 Product Change Notification Service............................................................................................................14 Customer Support........................................................................................................................................ 14 Microchip Devices Code Protection Feature................................................................................................ 14 Legal Notice................................................................................................................................................. 14 Trademarks.................................................................................................................................................. 15 Quality Management System....................................................................................................................... 15 Worldwide Sales and Service.......................................................................................................................16 © 2019 Microchip Technology Inc. User Guide DS40002160A-page 2 ATtiny104 Xplained Nano Introduction 1. Introduction 1.1 Features • • • • • 1.2 ATtiny104 Microcontroller One Yellow User LED One Mechanical Button mEDBG – Auto-ID for board identification in Atmel Studio/Microchip MPLAB® X IDE – One green board status LED – Programming – Virtual COM port (CDC) USB Powered Kit Overview The Microchip ATtiny104 Xplained Nano Evaluation kit is a hardware platform to evaluate the ATtiny104. Figure 1-1. ATtiny104 Xplained Nano Evaluation Kit Overview Power disconnect mEDBG Micro USB Con nector Status LED Power mEDBG dis connect Ground Clock Serial Target I/O Program/Debug Shared I/Os RESET VUSB TPI DATA GND TPI CLK CLK OUT NC CDC TX VREG CDC RX VCC GND TPI CLK PA0 PB3 CDC TX TPI DATA PA1 PB2 CDC RX RESET PA2 PB1 USER BTN PA3 PB0 PA4 PA7 PA5 PA6 USER LED User LED © 2019 Microchip Technology Inc. User button ATtiny104 User Guide DS40002160A-page 3 ATtiny104 Xplained Nano Getting Started 2. Getting Started 2.1 Xplained Nano Quick Start Steps to start exploring the Microchip Xplained Nano platform: 1. Download Atmel Studio/Microchip MPLAB® X IDE. 2. Launch Atmel Studio/Microchip MPLAB® X IDE. 3. Optional: Use Atmel START to generate drivers and examples. 4. Write your application code. 5. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB port on the kit. When the Xplained Nano kit is connected to your computer for the first time, the operating system will perform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft® Windows® XP, Windows Vista®, Windows 7, Windows 8, and Windows 10. The drivers for the kit are included with Atmel Studio/ Microchip MPLAB® X IDE. Once the Xplained Nano board is powered, the green status LED will blink and Atmel Studio/Microchip MPLAB® X IDE will auto-detect which Xplained Nano board is connected. Atmel Studio/Microchip MPLAB® X IDE will present relevant information like data sheets and kit documentation. The ATtiny104 device is programmed by the on-board Mini Embedded Debugger and therefore, no external programmer tool is required. 2.2 Design Documentation and Relevant Links The following list contains links to the most relevant documents and software for the ATtiny104 Xplained Nano. • • • • • • • • Xplained Products - Xplained Evaluation Kits are a series of easy-to-use evaluation kits for Microchip microcontrollers and other Microchip products. – Xplained Nano - used for low pin count devices and provides a minimalistic solution with access to all I/O pins of the target microcontroller. – Xplained Mini - used for medium pin count devices and adds Arduino Uno compatible header footprint and a prototyping area. – Xplained Pro - used for medium-to-high pin count devices that features advanced debugging and standardized extensions for peripheral functions. Note:  All the above kits have on-board programmers/debuggers, which creates a set of low-cost boards for evaluation and demonstration of features and capabilities of different Microchip products. Atmel Studio - Free IDE for the development of C/C++ and assembler code for microcontrollers. 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. MPLAB® Code Configurator - MPLAB® Code Configurator (MCC) is a free software plug-in that provides a graphical interface to configure peripherals and functions specific to your application. IAR Embedded Workbench® for AVR® - This is a commercial C/C++ compiler that is available for 8-bit AVR. There is a 30-day evaluation version as well as a 4 KB code-size-limited kick-start version available from their website. Atmel START - Atmel START is an online tool that helps the user to select and configure software components and tailor your embedded application in a usable and optimized manner. Microchip Sample Store - Microchip sample store where you can order samples of devices. Data Visualizer - Data Visualizer is a program used for processing and visualizing data. The Data Visualizer can receive data from various sources such as the EDBG Data Gateway Interface found on Curiosity Nano and Xplained Pro boards and COM Ports. © 2019 Microchip Technology Inc. User Guide DS40002160A-page 4 ATtiny104 Xplained Nano Getting Started • • Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings, 3D plots, layer plots, etc. Hardware Users Guide in PDF format - PDF version of this User Guide. © 2019 Microchip Technology Inc. User Guide DS40002160A-page 5 ATtiny104 Xplained Nano Xplained Nano 3. Xplained Nano Xplained Nano is an evaluation platform that provides a set of small boards with access to all microcontroller I/O’s. The platform consists of a series of low pin count Microcontroller (MCU) boards, which are integrated with Atmel Studio/Microchip MPLAB® X IDE to present relevant user guides, application notes, data sheets, and example code through Atmel Studio/Microchip MPLAB® X IDE. The platform also features a Virtual COM port for serial communication to a host PC. 3.1 Mini Embedded Debugger The ATtiny104 Xplained Nano contains the Mini Embedded Debugger (mEDBG) for on-board programming. The mEDBG is a composite USB device of two interfaces: a debugger and a virtual COM port. Together with Atmel Studio, the mEDBG debugger interface can program the ATtiny104. On ATtiny104 Xplained Nano, the TPI interface is connected between the mEDBG and the ATtiny104. The virtual COM port is connected to a UART on the ATtiny104 and provides an easy way to communicate with the target application through the terminal software. It offers variable baud rate, parity, and Stop bit settings. Note:  The settings on the ATtiny104 must match the settings given in the terminal software. Info:  The virtual COM port in the mEDBG requires the terminal software to set the Data Terminal Ready (DTR) signal to enable the UART pins connected to the ATtiny104. If the DTR signal is not enabled the UART pins on the mEDBG are kept in high-z (tri-state), rendering the COM port unusable. The DTR signal is automatically set by some terminal software, but it may have to be manually enabled in the target terminal. The mEDBG controls one status LED on the ATtiny104 Xplained Nano. The table below shows how the LED is controlled in different operation modes. Table 3-1. mEDBG LED Control Operation Mode 3.1.1 Status LED Power-up LED is briefly lit Normal operation LED is not lit Programming Activity indicator; the LED flashes when programming/ debugging with the mEDBG Xplained Nano Clock Output The mEDBG outputs its CPU clock to the CLK pin 8, as shown in 3.3 Xplained Nano Standard Pinout. The clock output can be used to feed the target device with a more accurate clock if this is needed for the application. 3.2 Power Sources The kit can be powered by different sources. By default the kit will have a 5V supply and the voltage is taken directly from the USB port through a 500 mA PTC fuse. The voltage from the USB connector can vary between 4.4V to 5.25V (according to USB spec). If other voltages are required, the kit must be disconnected from the USB to avoid damage or contention to the USB power. The mEDBG must also be disconnected from the target section of the board. The board can be powered by applying a voltage to one of the power connections on the board, according to the table below. To avoid any power leakage through the mEDBG, this should also be disconnected by removing the resistors shown in Figure 3-3. For placement of power connections, see 3.3 Xplained Nano Standard Pinout. © 2019 Microchip Technology Inc. User Guide DS40002160A-page 6 ATtiny104 Xplained Nano Xplained Nano Table 3-2. Power Connections Power Connection Description VUSB USB Voltage output when USB is connected (behind a PTC fuse). Can be used as power input when USB is not used. VREG Regulated voltage from VUSB. If the kit does not have a regulator, this is directly connected to VUSB. VCC Target voltage supply. By default, connected to VREG through a 0Ω resistor. Apply external voltage here if the resistor is removed. Figure 3-1. Power Supply Block Diagram USB PTC VUSB / VREG VCC 0-ohm Resistor Target MCU Power source Power connection mEDBG Power consumer 3.3 Xplained Nano Standard Pinout Xplained Nano kits have a standard pinout in the mEDBG section, as shown in the tables and figure below. The program/debug pins will change depending on the target interface but will remain at the same locations. Xplained Nano kits have a target section where all I/O pins will be available and fanned out. Except for the VCC and GND pins with fixed positions, there are no defined pin functions in this area. The first pin in the target area is the VCC pin, located right next to the VREG pin of the standard section. The last pin is GND, and it is located next to the CDC RX pin in the standard section. For reference, see the figure below. 3.3.1 Standard Pinout for TPI Table 3-3. Xplained Nano Standard Pinout for TPI Pin Number Name Description 1 RST Reset line 2 TPID TPI Program data line 3 TPIC TPI Program clock output 4 NC No Connect 5 VREG Regulated voltage or VUSB if no regulator present 6 UART RX mEDBG UART RX line 7 UART TX mEDBG UART TX line 8 CLK mEDBG clock output 9 GND Ground 10 VUSB USB voltage © 2019 Microchip Technology Inc. User Guide DS40002160A-page 7 ATtiny104 Xplained Nano Xplained Nano Figure 3-2. Xplained Nano Standard Pinout for TPI Power disconnect 3.4 mEDBG Micro USB Connector Status LED RESET VUSB TPI DATA GND TPI CLK CLK OUT NC CDC TX VREG CDC RX VCC GND Disconnecting mEDBG The target device can be completely separated from the mEDBG, but this requires some small modifications to the board using a soldering iron. By removing the resistors in the sections shown in the figure below, the mEDBG is completely disconnected from the target controller. If desired to connect the mEDBG again, solder in 0Ω resistors or solder in 100-mil headers on the header footprints and use wire-straps to connect the interfaces. Figure 3-3. Kit Modifications Power disconnect © 2019 Microchip Technology Inc. mEDBG disconnect User Guide DS40002160A-page 8 ATtiny104 Xplained Nano Hardware User Guide 4. Hardware User Guide 4.1 Connectors 4.1.1 ATtiny104 Xplained Nano Pinout The ATtiny104 Xplained Nano has a direct fan-out of the I/O pins of the device and all I/O’s are accessible at the edge connectors. Table 4-1. Edge Connector Edge Connector ATtiny104 Pin Functions Shared Functionality 1 VCC Power supply 2 PA[0] PCINT0/ADC0/AIN0/T0/CLKI/TPICLK mEDBG TPI Clock 3 PA[1] PCINT1/ADC1/AIN1/OC0B/TPIDATA mEDBG TPI Data 4 PA[2] PCINT2/RESET mEDBG Reset 5 PA[3] PCINT3/OC0A 6 PA[4] PCINT4/ICP0 7 PA[5] PCINT5/ADC2/OC0B 8 PA[6] PCINT6/ADC3 9 PA[7] PCINT7 10 PB[0] PCINT8/ADC4 11 PB[1] PCINT9/INT0/ADC5/XCK0/OC0A/CLKO User button 12 PB[2] PCINT10/ADC6/TxD0/ICP0 mEDBG CDC RX 13 PB[3] PCINT11/ADC7/ACO/RxD0/T0 mEDBG CDC TX 14 GND Ground 4.2 User LED Current Measurement The power to the target controller ATtiny104 is connected from the VREG supply to the targets VCC supply with a 0Ω resistor, as shown in the figure below. To measure the power consumption of the device, remove the 0Ω resistor and replace it with an ammeter. The ammeter can be connected between the VREG and VCC pads for easy measurement. Tip:  To connect the two power domains again, solder in a 0Ω resistor on the footprint or a 100-mil header on the header footprint at the edge of the board and place a jumper between VREG and VCC. © 2019 Microchip Technology Inc. User Guide DS40002160A-page 9 ATtiny104 Xplained Nano Hardware User Guide CAUTION Removing the resistor while the kit is powered without an ammeter or jumper may cause the ATtiny104 to be powered through its I/O pins. This may cause permanent damage to the device. Figure 4-1. Current Measurement VREG Power disconnect VCC 4.3 Peripherals 4.3.1 LED There is one yellow LED available on the ATtiny104 Xplained Nano board that can be turned ON and OFF. The LED can be activated by driving the connected I/O line to GND. Table 4-2. LED Connection ATtiny104 Pin PA5 4.3.2 Function Shared Functionality Yellow LED0 Edge connector Mechanical Buttons ATtiny104 Xplained Nano contains one mechanical button. This is a generic user configurable button and when a button is pressed it will drive the I/O line to GND. Info:  There is no pull-up resistor connected to the generic user button. Remember to enable the internal pull-up in the ATtiny104 to use the button. Table 4-3. Mechanical Button ATtiny104 Pin PB1 Description Shared Functionality User button © 2019 Microchip Technology Inc. Edge connector User Guide DS40002160A-page 10 ATtiny104 Xplained Nano Embedded Debugger Implementation 5. Embedded Debugger Implementation ATtiny104 Xplained Nano contains a Mini Embedded Debugger (mEDBG) that can be used to program the ATtiny104 using Tiny Program Interface (TPI). The mEDBG also includes a Virtual Com port interface over UART. Atmel Studio can be used as a front end for the Mini Embedded Debugger. 5.1 Tiny Program Interface The Tiny Program Interface (TPI) uses two pins to communicate with the target. For further information on how to use the programming capabilities of the mEDBG, see Mini Embedded Debugger. Table 5-1. TPI Connections ATtiny104 Pin 5.2 Function Shared Functionality PA0 TPI clock mEDBG PA1 TPI data mEDBG Virtual COM Port The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATtiny104 UARTs. For further information on how to use the Virtual COM port, see Mini Embedded Debugger. Table 5-2. Virtual COM Port Connections ATtiny104 Pin Function Shared Functionality PB2 UART TXD (ATtiny104 TX line) mEDBG CDC RX PB3 UART RXD (ATtiny104 RX line) mEDBG CDC TX © 2019 Microchip Technology Inc. User Guide DS40002160A-page 11 ATtiny104 Xplained Nano Hardware Revision History and Known Issues 6. Hardware Revision History and Known Issues This user guide provides the latest available revision of the kit. This section contains 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 Xplained Nano boards can be found in two ways; either through Atmel Studio/ Microchip MPLAB® X IDE or by looking at the sticker on the bottom side of the PCB. By connecting an Xplained Nano board to a computer with Atmel Studio/Microchip MPLAB® X IDE running, an information window will pop up. The first six digits of the serial number, which is listed under kit details, contain the product identifier and revision. The same information can be found on the sticker on the bottom side of the PCB. Most kits will print the identifier and revision 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 QR-code, which contains a serial number string. The serial number string has the following format: "nnnnrrssssssssss" n = product identifier r = revision s = serial number The product identifier for ATtiny104 Xplained Nano is A09-2678. 6.2 Fuse Masking The ATtiny104 RSTDISBL(External Reset disable) fuse has been masked out in the mEDBG firmware. This is done to avoid users disabling programming and debugging of the ATtiny104. 6.3 Revision 2 The target device U200 on revision 2 of the kit has been changed from engineering samples (ATTINY104-SSNRES) to non-engineering samples (ATTINY104-SSNR). 6.4 Revision 1 Revision 1 is the initially released revision. Engineering samples are mounted on revision 1 for the target device U200 (ATTINY104-SSNRES). © 2019 Microchip Technology Inc. User Guide DS40002160A-page 12 ATtiny104 Xplained Nano Document Revision History 7. Document Revision History Doc. Rev. Date A 12/2019 Microchip DS40002160 replaces Atmel 42671; Added section regarding fuse masking. 42671B 08/2016 Add revision 2 information. 42671A 02/2016 Initial document release. © 2019 Microchip Technology Inc. Comment User Guide DS40002160A-page 13 ATtiny104 Xplained Nano 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. 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