AT90USBKey Hardware User Guide Section 1 Introduction 1-3 1.1 Overview 1-3 1.2 AT90USBKey Features 1-4 Section 2 Using the AT90USBKey 2-5 2.1 Overview 2-5 2.2 Power Supply 2-6 2.3 Reset 2-8 2.4 On-board Resources 2-9 2.5 In-System Programming 2-13 2.6 Debugging 2-14 Section 3 Troubleshooting Guide 3-15 Section 4 Technical Specifications 4-16 Section 5 Technical Support 5-1 7 Section 6 Complete Schematics 6-1 8 AT90USBKey Hardware User Guide User Guide 1 7627A-AVR-04/06 Section 1 Introduction Congratulations on acquiring the AVR® AT90USBKey. This kit is designed to give designers a quick start to develop code on the AVR® and for prototyping and testing of new designs with the AT90USB microcontroller family. 1.1 Overview This document describes the AT90USBKey dedicated to the AT90USB AVR microcontroller. This board is designed to allow an easy evaluation of the product using demonstration software. To increase its demonstrative capabilities, this stand alone board has numerous on- board resources: USB, joystick, data-flash and temperature sensor. Figure 1-1 . AT90USBKey AT90USBKey Hardware User Guide 1-3 7627A-AVR-04/06 Introduction 1.2 AT90USBKey Features The AT90USBKey provides the following features: ■ AT90USB QFN64 ■ AVR Studio® software interface ■ USB software interface for Device Firmware Upgrade (DFU bootloader) (2) ■ Power supply flagged by “VCC-ON” LED: - regulated 3.3V - from an external battery connector (for reduced host or OTG operation) - from the USB interface (USB device bus powered application) ■ JTAG interface (connector not mounted): - for on-chip ISP - for on-chip debugging using JTAG ICE ■ Serial interfaces: - 1 USB full/low speed device/host/OTG interface ■ On-board resources: - 4+1 -ways joystick - 2 Bi-Color LEDs - temperature sensor - serial dataflash memories - all microcontroller I/O ports access on 2x8pin headers (not mounted) ■ On-board RESET button ■ On-board HWB button to force bootloader section execution at reset. ■ System clock: - 8 MHz crystal Notes: 1. The AVRUSBKey is supported by AVR Studio®, version 4.12 or higher. For up-to- date information on this and other AVR tool products, please consult our web site. The most recent version of AVR Studio®, AVR tools and this User Guide can be found in the AVR section of the Atmel web site, http://www.atmel.com. 2. ATMEL Flip®, In System Programming Version 3 or Higher shall be used for Device Firmware Upgrade. Please consult Atmel web site to retrieve the latex version of Flip and the DFU bootloader Hex file if needed. 1-4 AT90USBKey Hardware User Guide 7627A-AVR-04/06 Section 2 Using the AT90USBKey This chapter describes the AVRUSBKey and all its resources. 2.1 Overview Figure 2-1 . AT90USBKey Overview AT90USB1287 L2 a A A fc. 1 - AT90USBKey Hardware User Guide 2-5 7627A-AVR-04/06 Using the AT90USBKey 2.2 Power Supply 2.2.1 Power Supply Sources The on-board power supply circuitry allows two power supply configurations: ■ from USB connector ■ from battery connector USB powered When used as a USB device bus powered application, the AVRUSBKey can be directly powered via the USB VBUS power supply line. Battery powered The external battery connector should be used when the AT90USBKey is used as a USB host. This mode allows the AT90USBKey to provide a 5V power supply from its VBUS pin. - Need of a female battery clip - Input supply from 8 up to 15V DC (min. 100mA) Figure 2-2 . Power supply schematic D3 VBUS» LL4148 D4 LL4148 U4 MTA Ext power supply 5V IN OUT SHDN OUT FAULT GND CC SET LP3982 i_8 -x 33nF C15 R1! 100k 1%< U3out=1.25*(1+(R15+R18)/R19 100k 1% R18 R19 124k 1% D6 U5 J8 VBAT 1 IN OUT 2 w\ 1 LL4148 220nF — - 2 GND C16 4.7uF C17 LM340 lOOnF C18 VCC3 2 »VCC3 2-6 AT90USBKey Hardware User Guide 7627A-AVR-04/06 Using the AT90USBKey 2.2.2 VBUS Generator When using the AT90USB microcontroller in USB host mode, the AT90USBKey should provide a 5V power supply over the VBUS pin of its USB mini AB connector. A couple of transistors allows the UVCON pin of the AT90USB to control the VBUS generation (See Figure 2-3). In this mode the AT90USBKey is powered by external battery power supply source. Figure 2-3 . VBUS generator schematic FDV304P/FAI -»VBUS C19 4.7uF 2.2.3 “POWER-ON“ LED The POWER-ON LED (“D1”) is always lit when power is applied to AVRUSBKey regardless of the power supply source. AT90USBKey Hardware User Guide 2-7 7627A-AVR-04/06 Using the AT90USBKey 2.3 Reset Although the AT90USB has its on-chip RESET circuitry (c.f. AT90USB Datasheet, section “System Control and Reset), the AVRUSBKey provides to the AT90USB a RESET signal witch can come from two different sources: Figure 2-4 . Reset Implementation RST VCC 2.3.1 Power-on RESET The on-board RC network acts as power-on RESET. 2.3.2 RESET Push Button By pressing the RESET push button on the AVRUSBKey, a warm RESET of the AT90USB is performed. 2.3.3 Main Clock XTAL To use the USB interface of the AT90USB, the clock source should always be a crystal or external clock oscillator (the internal 8MHz RC oscillator can not be used to operate with the USB interface). Only the following crystal frequency allows proper USB operations: 2MHz, 4MHz, 6MHz, 8MHz, 12MHz, 16MHz. The AT90USBKey comes with a default 8MHz crystal oscillator. 2-8 AT90USBKey Hardware User Guide 7627A-AVR-04/06 Using the AT90USBKey 2.4 On-board Resources 2.4.1 USB The AVRUSBKey is supplied with a standard USB mini A-B receptacle. The mini AB receptacle allows to connect both a mini A plug or a mini B plug connectors. Figure 2-5 . USB mini A-B Receptacle J3 1-V _BUS 2- D- 3- D + 5-GND 4- ID SHIEL USB_MiniA|J VBUS -»VBUS R2 22 D- D + GND R3 22 CR1 X * CR2 C7 luF UCAP VBUS » VBUS UID R4 0 □ O When connected to a mini B plug, the AT90USB operates as an “USB device” (the ID pin of the plug is unconnected) and when connected to a mini A plug, the AT90USB operates as a “USB host” (the ID pin of the A plug is tied to ground). 2.4.2 Joystick The 4+1 ways joystick offers an easy user interface implementation for a USB application (it can emulate mouse movements, keyboard inputs...). Pushing the push-button causes the corresponding signal to be pulled low, while releasing (not pressed) causes an H.Z state on the signal. The user must enable internal pull-ups on the microcontroller input pins, removing the need for an external pull-up resistors on the push-button. Figure 2-6 . Joystick Schematic SW3 <Z>PB[7..0] 1 2 £7 ^ Select 5 PB5/ 7 PB6/ O Left 3 PB7 / Up 6 PE4/ k. A Right 4 PE5/ Coml Com2 Down C^PE[7..0] TPA511G AT90USBKey Hardware User Guide 2-9 7627A—AVR— 04/06 Using the AT90USBKey 2.4.3 LEDs The AT90USBKey includes 2 bi-color LEDs (green/red) implemented on one line. They are connected to the high nibble of “Port D” of AT90USB (PORTD[4..7]). To light on a LED, the corresponding port pin must drive a high level. To light off a LED, the corresponding port pin must drive a low level. Figure 2-7 . LEDs Implementation schematic r 1 PD[7..0] Table 2-1. Leds references LED Reference AT90USB Connection Color D2 PORTD.4 Red PORTD.5 Green D5 PORTD.6 Green PORTD.7 Red 2.4.4 Temperature Sensor The temperature sensor uses a thermistor (R29), or temperature-sensitive resistor. This thermistor have a negative temperature coefficient (NTC), meaning the resistance goes up as temperature goes down. Of all passive temperature measurement sensors, thermistors have the highest sensitivity (resistance change per degree of temperature change). Thermistors do not have a linear temperature/resistance curve. The voltage over the NTC can be found using the A/D converter (connected to channel 0). See the AT90USB Datasheet for how to use the ADC. The thermistor value (Rt) is calculate with the following expression: R r = Vadco^(VCC- V adco ) Where: Rt = Thermistor value (Q) at T temperature (°Kelvin) Rh = Second resistor of the bridge -100 KQ ±10% at 25°C Vadco = Voltage value on ADC-0 input (V) VCC = Board power supply 2-10 AT90USBKey Hardware User Guide 7627A-AVR-04/06 Using the AT90USBKey The NTC thermistor used in AT90USBKey has a resistance of 100 K Q ±5% at 25°C (To) and a beta-value of 4250 ±3%. By the use of the following equation, the temperature (T) can be calculated: T = R T In — ! + ■=- P R o o Where: Rt = Thermistor value (Q) at T temperature (°Kelvin) B = 4250 ±3% Ro= 100 KQ ±5% at 25°C To = 298 °K (273 °K + 25°K) The following cross table also can be used. It is based on the above equation. Table 2-2 . Thermistor Values versus Temperature Temp. Rt Temp. Rt Temp. Rt Temp. Rt (°C) (KQ) (°C) (KQ) (°C) (KQ) (°C) (KQ) -20 1263,757 10 212,958 40 50,486 70 15,396 -19 1182,881 11 201,989 41 48,350 71 14,851 -18 1107,756 12 191,657 42 46,316 72 14,329 -17 1037,934 13 181,920 43 44,380 73 13,828 -16 973,006 14 172,740 44 42,537 74 13,347 -15 912,596 15 164,083 45 40,781 75 12,885 -14 856,361 16 155,914 46 39,107 76 12,442 -13 803,984 17 148,205 47 37,513 77 12,017 -12 755,175 18 140,926 48 35,992 78 11,608 -11 709,669 19 134,051 49 34,542 79 11,215 -10 667,221 20 127,555 50 33,159 80 10,838 -9 627,604 21 121,414 51 31,840 81 10,476 -8 590,613 22 115,608 52 30,580 82 10,128 -7 556,056 23 110,116 53 29,378 83 9,793 -6 523,757 24 104,919 54 28,229 84 9,471 -5 493,555 25 100,000 55 27,133 85 9,161 -4 465,300 26 95,342 56 26,085 86 8,863 -3 438,854 27 90,930 57 25,084 87 8,576 -2 414,089 28 86,750 58 24,126 88 8,300 -1 390,890 29 82,787 59 23,211 89 8,035 0 369,145 30 79,030 60 22,336 90 7,779 1 348,757 31 75,466 61 21,498 91 7,533 2 329,630 32 72,085 62 20,697 92 7,296 3 311,680 33 68,876 63 19,930 93 7,067 4 294,826 34 65,830 64 19,196 94 6,847 AT90USBKey Hardware User Guide 2-11 7627A-AVR-04/06 Using the AT90USBKey Temp. Rt Temp. Rt Temp. Rt Temp. Rt (°C) (KQ) (°C) (KQ) (°C) (KQ) (°C) (KQ) 5 278,995 35 62,937 65 18,493 95 6,635 6 264,119 36 60,188 66 17,820 96 6,430 7 250,134 37 57,576 67 17,174 97 6,233 8 236,981 38 55,093 68 1 6,556 98 6,043 9 224,606 39 52,732 69 15,964 99 5,860 Figure 2-8 . Thermistor Schematic 2.4.5 Data Flash memory For mass-storage class demonstration purpose, the AT90USBKey provides two on-chip serial Flash memories (AT45DB642D) connected to the AT90USB Serial Port Interface (SPI). The data-flash chip select signals are connected to PortE bit 0 and bit 1 of the AT90USB (See Figure 2-9). Figure 2-9 . On-board data flash schematic R11 100k VCC3 O RIO 100k PEI PB1 PB2 PB3 RESET » U3 SI SO ■>SCK GND RESET VCC CS WP 8 6 AT45DB642D CASON 8 VCC3 R12 100k 2-12 AT90USBKey Hardware User Guide 7627A-AVR-04/06 Using the AT90USBKey 2.5 In-System Programming 2.5.1 Programming with USB bootloader: DFU (Device Firmware Upgrade) AT90USB part comes with a default factory pre-programmed USB bootloader located in the on-chip boot section of the AT90USB. This is the easiest and fastest way to reprogram the device directly over the USB interface. The “Flip” PC side application, is available from the Atmel website, offers a flexible an user friendly interface to reprogram the application over the USB bus. The HWB pin of the AT90USB allows to force the bootloader section execution after reset. (Refer to AT90USB datasheet section “boot loader support”). To force bootloader execution, operate as follow: ■ Press both “RST” and “HWB” push buttons ■ First release the “RST” push button ■ Release the “HWB” push button For more information about the USB bootloader and “Flip” application, please refer to the “USB bootloader datasheet document” and “Flip’s user manual”. Note: The HWB pin is active only if the HWBE fuse is set (default factory configuration). 2.5.2 Programming with AVR JTAGICEmKII The AT90USB can be programmed using specific JTAG link. To use the AVR JTAGICEmkll with an AT90USBKey an optional HE10 connector should be soldered to J9 footprint. Then the JTAG probe can be connected to the AT90USBKey as shown in Figure 2-10. Note: When the JTAGEN Fuse is unprogrammed, the four TAP pins are normal port pins, and the TAP controller is in reset. When programmed, the input TAP signals are internally pulled high and the JTAG is enabled for Boundary-scan and programming. The AT90USB device is shipped with this fuse programmed. AT90USBKey Hardware User Guide 2-13 7627A-AVR-04/06 Using the AT90USBKey Figure 2-10 . Connecting AVR JTAG ICE to AVRUSBKey The Flash, EEPROM and all Fuse and Lock Bit options ISP-programmable can be programmed individually or with the sequential automatic programming option. Note: See AVR Studio® on-line Help for information. 2.6 Debugging 2.6.1 Debugging with AVR JTAG ICE mkll The AT90USBKey can be used for debugging with JTAG ICE MK II. Connect the JTAG ICE mkll as shown in Figure 2-10, for debugging, please refer to AVR Studio® Help information. When using JTAG ICE MK II for debugging, and as AT90USB parts are factory configured with the higher security level set, a chip erase operation will be performed on the part before debugging. Thus the on-chip flash bootloader will be erased. It can be restored after the debug session using the bootloader hex file available from ATMEL website. 2-14 AT90USBKey Hardware User Guide 7627 A-AV R-04/06 Section 3 Troubleshooting Guide Figure 3-1 . Troubleshooting Guide Problem Reason Solution The Green “VCC-ON” LED is not on No power supply Verify the power supply source (check battery charge or USB connection). AVRUSBKey does not work The AT90USB cannot be programmed The AVR JTAG ICE probe is not connected Connect the JTAG ICE 10-PIN header to the correct AVRUSBKey JTAG header (page 13) The memory lock bits are programmed Erase the memory before programming with JTAG ICE. The fuse bits are wrongly programmed Check the fuse bits with JTAG ICE Can not connect to USB bootloader Force bootloader execution with HWB under reset. USB bootloader erased after a JTAG debugging session: reprogram the USB bootloader with JTAG. AVR Studio does not detect the AVR JTAG ICE. Serial/USB cable is not connected, or power is off Connect serial cable to RS232 (STK500 - AVR ISP) and check power connections Connect serial cable to USB (JATG ICE MKII, AVR ISPmklll) and check power connections PC COM port is in use Disable other programs that are using PC COM port. Change PC COM port AVR Studio does not detect COM port. Disable COM port auto-detection in AVR Studio file menu. Force COM port to correct COM port AT90USBKey Hardware User Guide 3-15 7627A-AVR-04/06 Section 4 Technical Specifications ■ System Unit - Physical Dimensions L=90 x W=30 x H=8 mm - Weight 12 g ■ Operating Conditions - Internal Voltage Supply 3.3V - External Voltage Supply 8V-15V ■ Connections - USB Connector Mini AB receptacle - USB Communications Full speed/low speed - JTAG Connector Footprint for HE10 connector - All ports connectors J1, J2, J4, J5, J6, J7 - Battery connector MTA right angle AT90USBKey Hardware User Guide 4-16 7627A—AVR— 04/06 Section 5 Technical Support For Technical support, please contact avr@atmel.com. When requesting technical support, please include the following information: ■ Which target AVR device is used (complete part number) ■ Target voltage and speed ■ Clock source and fuse setting of the AVR ■ Programming method (ISP, JTAG or specific Boot-Loader) ■ Hardware revisions of the AVR tools, found on the PCB ■ Version number of AVR Studio. This can be found in the AVR Studio help menu. ■ PC operating system and version/build ■ PC processor type and speed ■ A detailed description of the problem AT90USBKey Hardware User Guide 5-17 7627A— AVR— 04/06 Section 6 Complete Schematics On the next pages, the following documents of AT90USBKey are shown: ■ Complete schematics, ■ Bill of materials. AT90USBKey Hardware User Guide 6-18 7627A-AVR-04/06 Complete Schematics Figure 6-1 . Schematics, 1 of 2 AT90USBKey Hardware User Guide 6-19 7627A-AVR-04/06 Complete Schematics Figure 6-2 . Schematics, 2 of 2 o o > Y o' o > CM T3 rd i — 1 M-l QC cu T5 P rd CD -p CD CD P T5 tr> a -p P P P p p CD (D \ — 1 -H o p t7^ -P CM -P £ o P QC P £ O -H P -p -P • • o o -p \ — 1 £ p o CO D o p £ 1— 1 P o O £ Eh CD CM i — 1 o D 4=: pci D i — 1 p C < Mm O o ^ ■IHI 1 or 2 uj — o o ^ < > CL UJ < o O LU =i P CL =) o o UJ □ ^ O or ° CO , O' O > o- 8 > HHi" CO CO CO LO _Q O O O 0- o z o g O > LU NT CO _ o LU CO co co or o or co, O c O > LU CL CM CO ^t- O CO < o □ CM ^1- co CO o LO ■■d- l — LU CO LU or or 2 LU — o o ^ 2: uj < q O LU if “I P or o o CO, O' O > OJo o° o' o > ,o CO Of i — I Pm CCS -P c0 Q §° CM LO _Q O CO O O o > LU *r co _ o UJ CO co co or o 0 CM co WfV o a O > o LU CL o CO < o □ CM 'd- co CO o LO ■'d- I — LU CO LU or m CL i hK « UJ Q LU _l ■o CD CL O o 6 CD LO CD l^> a Q Q Q CL CL CL h- CNJ CO CM CM -CM o co Q H iM ^ ^ H — i — : ! co co . i i >1 CM i i 1 . i i o I 1 i : i-d — « 6-20 r ® AT90USBKey Hardware User Guide 7627A-AVR-04/06 Complete Schematics Table 6-1 . Bill of material Item Q.ty Reference Part Tech. Characteristics Package 1 2 CR1.CR2 ESD protection (PGB0010603) 2 10 C1,C2,C3,C4,C5,C6,C12, C13, Cl 8, C20 lOOnF 50V-10% Ceramic CASE 0603 3 1 C7 luF lOVmin ±10% EIA/IECQ 3216 4 3 C8,C9, C17 220nF 50V-10% Ceramic CASE 0603 5 2 CIO, C11 1 5pF 50V-5% Ceramic CASE 0603 6 3 C14, C16, C19 4.7uF lOVmin ±10% EIA/IECQ 3216 7 1 C15 33nF 50V-5% Ceramic CASE 0603 8 2 D2,D5 LED BI-COLOUR/ LSGT670 1=1 0 mA_ PLCC-4 9 1 D1 TOPLED/ LPM676-K2M1 1=10 mA_ PLCC-2 10 2 D3,D4 Dll LL4148-7 i=200mA max LL-34 11 1 J3 USB mini AB receptacle Surface mount 12 0 J9 CON 2x5 (2.54mm) (Not Mounted) 13 0 J1 ,J2,J4,J5,J6,J7 1 .27 mm Dual header (Not Mounted) 14 1 J8 Connector MTA 2 cts right angle 15 1 Ml FDV304P/FAI SOT23 16 1 Q1 BC847B 1C peak=200mA SOT23 17 2 R2,R3 22 1/1 6W-5% SMD CASE 0603 18 1 R5 68k 1/16W-5% SMD CASE 0603 19 2 R6,R7 47k 1/16W-5% SMD CASE 0603 20 7 R1 ,R4,R5,R8,R1 6,R20, R26 0 CASE 0603 21 0 R21 0 (Not Mounted) CASE 0603 22 1 R28 220k 1/16W-5% SMD CASE 0603 23 7 R9,R10,R11 ,R12,R25,R27,R3 0 100k 1/16W-5% SMD CASE 0603 24 5 R13,R1 4,R17,R22,R23 Ik 1/16W-5% SMD CASE 0603 25 2 R24,R28 10k 1/16W-5% SMD CASE 0603 26 1 R29 NCP18WF104J03RB 100K- 8=4250 CASE 0603 27 2 R15.R18 100k 1% 1/1 6W-1% SMD CASE 0603 28 1 R19 120k 1% 1/1 6W-1% SMD CASE 0603 29 2 SW1 ,SW2 PUSH-BUTTON / DTSM31 N 6x3. 5mm - 1 .6N See DS 30 1 SW3 TPA511G 4 ways joystick + center CMS mount 31 1 U1 AT90USB1287 QFN64 32 2 U2,U3 AT45DB642D CASON8 33 1 U4 LP3982IMM-ADJ Vin Max 6V, 300mA MSOP8 34 1 U6 LM340MP5.0 35 1 Y1 8MHz CRYSTAL H=4mm HC49/4H AT90USBKey Hardware User Guide 6-21 7627A-AVR-04/06 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sari Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131 , USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 Microcontro llers 2325 Orchard Parkway San Jose, CA 95131 , USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ ASSP/ Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. 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Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for useas components in applications intended to support or sustainlife. © Atmel Corporation 2006. All rights reserved. Atmel®, logo and combinations thereof, are registered trademarks, and Everywhere You Are® are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Printed on recycled paper. 7627A-AVR-04/06 /xM