Thermistor Sck 084 Ntc 41e35

AT90USBKey .............................................................................................

Hardware Guide

Section 1 Introduction ........................................................................................... 1-3 1.1 1.2

Overview ...................................................................................................1-3 AT90USBKey Features............................................................................1-4

Section 2 Using the AT90USBKey ....................................................................... 2-5 2.1 2.2 2.3 2.4 2.5 2.6

Overview ...................................................................................................2-5 Power Supply ............................................................................................2-6 Reset.........................................................................................................2-8 On-board Resources.................................................................................2-9 In-System Programming .........................................................................2-13 Debugging...............................................................................................2-14

Section 3 Troubleshooting Guide ....................................................................... 3-15 Section 4 Technical Specifications ..................................................................... 4-16 Section 5 Technical ............................................................................... 5-17 Section 6 Complete Schematics ......................................................................... 6-18

AT90USBKey Hardware Guide 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 onboard resources: USB, joystick, data-flash and temperature sensor.

Figure 1-1 . AT90USBKey

AT90USBKey Hardware Guide

1-3 7627A–AVR–04/06

Introduction

1.2

AT90USBKey Features The AT90USBKey provides the following features: AT90USB QFN64 AVR Studio® software interface (1) 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:

1-4 7627A–AVR–04/06

1. The AVRUSBKey is ed by AVR Studio®, version 4.12 or higher. For up-todate information on this and other AVR tool products, please consult our web site. The most recent version of AVR Studio®, AVR tools and this 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.

AT90USBKey Hardware Guide

Section 2 Using the AT90USBKey This chapter describes the AVRUSBKey and all its resources.

2.1

Overview Figure 2-1 . AT90USBKey Overview

AT90USBKey Hardware 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

U4 5V

VBUS

2 7

IN SHDN

LL4148 3 D4 LL4148

GND

VCC3 OUT OUT FAULT CC SET

1 4 8 6 5

VCC3 R15 100k 1%

LP3982

33nF C15 U3out=1.25*(1+(R15+R18)/R19)

100k 1% R18 R19 124k 1%

D6

U5

J8

VBAT 2 1

LL4148

C16 4.7uF

220nF C17

1 2

IN

OUT

GND

3 100nF C18

LM340

MTA Ext power supply

2-6 7627A–AVR–04/06

AT90USBKey Hardware Guide

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

5V R24 10k

M1

R25 Q1 BC847B

UVCON

-

C19 4.7uF

100k

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 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 VCC R6 47k

C8 220nF RESET

RST

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 7627A–AVR–04/06

AT90USBKey Hardware Guide

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-D3-D+ 5-GND

VBUS

R2 22

VBUS

R3 22 VBUS

4-ID SHIELD

DD+ GND UCAP VBUS UID

C7 1uF

USB_MiniAB CR2

R4 0

GND

CR1

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 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 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 PB[7..0] SW3

1 2

Select Lef t Up Right Down Com1 Com2

5 7 3 6 4

PB5 PB6 PB7 PE4 PE5 PE[7..0]

TPA511G

AT90USBKey Hardware 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 LEDs

In-line Grouped LEDs D2

1k

R14

1k

R17

PD4

PD[7..0]

PD5

D5

1k

R22

1k

R23

PD6 PD7

Table 2-1 . Leds references LED Reference

AT90USB Connection

Color

D2

PORTD.4

Red

PORTD.5

Green

PORTD.6

Green

PORTD.7

Red

D5

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 ive 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 T = ( R H ⋅ V ADC 0 ) ⁄ ( V CC – V ADC 0 ) Where:

R T = Thermistor value (Ω) at T temperature (°Kelvin) R H = Second resistor of the bridge -100 KΩ ±10% at 25°C VADC0 = Voltage value on ADC-0 input (V) VCC = Board power supply

2-10 7627A–AVR–04/06

AT90USBKey Hardware Guide

Using the AT90USBKey

The NTC thermistor used in AT90USBKey has a resistance of 100 KΩ ±5% at 25°C (T0) and a beta-value of 4250 ±3%. By the use of the following equation, the temperature (T) can be calculated: β T = ------------------------------R β ⎛ ln T⎞ + ----------⎝ R ⎠ T0 0 Where:

R T = Thermistor value (Ω) at T temperature (°Kelvin)

ß = 4250 ±3% R 0 = 100 KΩ ±5% at 25°C T0 = 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

AT90USBKey Hardware Guide

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

-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

2-11 7627A–AVR–04/06

Using the AT90USBKey

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

Temp. (°C)

RT (KΩ)

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

16,556

98

6,043

9

224,606

39

52,732

69

15,964

99

5,860

Figure 2-8 . Thermistor Schematic PF[7..0] PF0

VCC R27 100k

R29

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 PB[7..0] VCC3 VCC3 R9 100k

R10 100k VCC3

PE0 PB1 PB2 PB3 RESET

VCC3

U2 1 2 3 4

SI SO SCK GND RESET VCC CS WP

8 7 6 5

AT45DB642D CASON8

R11 100k

PE1 PB1 PB2 PB3 RESET

U3 1 2 3 4

SI SO SCK GND RESET VCC CS WP

8 7 6 5

R12 100k

AT45DB642D CASON8

2-12 7627A–AVR–04/06

AT90USBKey Hardware Guide

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 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 ”). 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 manual”. Note:

2.5.2

The HWB pin is active only if the HWBE fuse is set (default factory configuration).

Programming with AVR JTAGICEmKII The AT90USB can be programmed using specific JTAG link. To use the AVR JTAGICEmkII 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:

AT90USBKey Hardware Guide

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.

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 mkII The AT90USBKey can be used for debugging with JTAG ICE MK II. Connect the JTAG ICE mkII 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 7627A–AVR–04/06

AT90USBKey Hardware Guide

Section 3 Troubleshooting Guide Figure 3-1 . Troubleshooting Guide Problem

Reason

The Green “VCC-ON” LED is not on No power supply

the power supply source (check battery charge or USB connection).

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

AVRUSBKey does not work

The AT90USB cannot be programmed

Solution

Force bootloader execution with HWB under reset. Can not connect to USB bootloader

Serial/USB cable is not connected, or power is off AVR Studio does not detect the AVR JTAG ICE.

PC COM port is in use

USB bootloader erased after a JTAG debugging session: reprogram the USB bootloader with JTAG.

Connect serial cable to RS232 (STK500 AVR ISP) and check power connections Connect serial cable to USB (JATG ICE MKII, AVR ISPmkIIl) and check power connections Disable other programs that are using PC COM port. Change PC COM port

AVR Studio does not detect COM port.

AT90USBKey Hardware Guide

Disable COM port auto-detection in AVR Studio file menu. Force COM port to correct COM port

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 Guide

4-16 7627A–AVR–04/06

Section 5 Technical For Technical , please [email protected]. When requesting technical , 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 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 Guide

6-18 7627A–AVR–04/06

R8 0 R0603

R5 0 R0603

R0603

PGB0010603

CR1

UGND

VBUS

RESISTORS CLOSED TO THE DEVICE

UGND

AGND

MINI_USBC

USB_MiniABF

4-ID SHIELD

1-V_BUS 2-D3-D+ 5-GND

J3

D+ D- RESISTORS Closed to the MCU

100nF C2 C0603

C7 1uF C3216-A

10 8 6 4 2

9 7 5 3 1

9 7 5 3 1

1.27 mm Dual H1.27-10

10 8 6 4 2

J6

PE[7..0]

PB[7..0]

R4 0 R0603 UCAP Capacitor Closed to the MCU

R0603

PGB0010603

CR2

R3 22 UCAP R0603

R2 22 R0603

VCC

PF[7..0] AREF

PF6 PF4 PF2 PF0

PB[7..0]

(not mounted)

VCC

PB[7..0]

PB7

PE6 UVCON PE7 UVCC DD+ GND UGND UCAP VBUS VBUS UID PE3 PB0 PB1 PB2 PB3 PB4 PB5 PB6

UVCON

C3 100nF C0603

9 7 5 3 1

9 7 5 3 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

100nF C0603 AVCC

AGND

AREF

1.27 mm Dual H1.27-10

10 8 6 4 2

J1

C4

10 8 6 4 2

(not mounted)

VCC

VCC

PF[7..0]

PF0 PF1 PF2 PF3 PF4 PF5 PF6 PF7

AVCC

R1 0 R0603

VBUS

VCC

PB6 PB4 PB2 PB0

PF1 PF3 PF5 PF7

PE6 PE7 UVcc DD+ UGND UCAP VBUS PE3 PB0 PB1 PB2 PB3 PB4 PB5 PB6 GND

10 8 6 4 2

VCC

C10 15pF C0603

XTAL2

PA6 PA4 PA2 PA0

UGND

PB1 PB3 PB5 PB7

QFN64

AT90USB128 QFN64

9 7 5 3 1

9 7 5 3 1 1.27 mm Dual H1.27-10

10 8 6 4 2

J7

8MHz 49US

C11 15pF C0603

Y 1 8MHz CRY STAL

XTAL1

(not mounted)

VCC

9 7 5 3 1

VCC

PC[7..0]

PA[7..0]

PD[7..0]

PA3 PA4 PA5 PA6 PA7 PE2 PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 PE1 PE0

PA[7..0]

U1

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

9 7 5 3 1

PE1 PE3 PE5 PE7

PE[7..0]

DTSM-3

R6 47k R0603

Date:

Size A4

Title

A90USB Key

9 7 5 3 1

9 7 5 3 1

9 7 5 3 1

VCC

VCC

VCC

HWB

HWB

DTSM-3

PE2

Sheet

1

of

2

Rev 1.0.0

Bootloader Activation

RESET

C0603 C9 220nF

PC[7..0]

PD[7..0]

R7 47k R0603

VCC

VCC

C5 100nF C0603

C6 100nF C0603

C1 100nF C0603

1.27 mm Dual (not mounted) H1.27-10

10 8 6 4 2

J5

Monday , January 09, 2006

Document Number

U

9 7 5 3 1

1.27 mm Dual H1.27-10 (not mounted)

10 8 6 4 2

J4

C0603 C8 220nF RESET

10 8 6 4 2

10 8 6 4 2

DECOUPLING CAPACITORS CLOSED TO THE DEVICE MCU Pin3

DECOUPLING CAPACITORS CLOSED TO THE DEVICE MCU Pin21

DECOUPLING CAPACITORS CLOSED TO THE DEVICE MCU Pin52

Reset Circuit

RST

RST

VCC

PC[7..0]

VCC

GND

1.27 mm Dual H1.27-10 (not mounted)

10 8 6 4 2

J2

PA[7..0]

10 8 6 4 2

PD[7..0]

PA3 PA4 PA5 PA6 PA7 PE2 PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0 PE1 PE0

PE6 PE4 PE2 PE0

PA0 PA1 PA2

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 PE4 PE5 RESET

PD6 PD4 PD2 PD0 PC6 PC4 PC2 PC0

AVCC GND AREF PF0 PF1 PF2 PF3 PF4 PF5 PF6 PF7 GND VCC PA0 PA1 PA2

PB7 PE4 PE5 RESET VCC GND XTAL2 XTAL1 PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 XTAL2 XTAL1 PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 PA1 PA3 PA5 PA7

PD1 PD3 PD5 PD7

AT90USBKey Hardware Guide PC1 PC3 PC5 PC7

Ferrite & capacitors closed to the MCU

Complete Schematics

Figure 6-1 . Schematics, 1 of 2

6-19

7627A–AVR–04/06

6-20

7627A–AVR–04/06

D5

D2

R23

1k

PF[7..0]

1 2

TPA511G

Com1 Com2

SW3

5 7 3 6 4

VCC

R26 0

1 3 5 7 9

J9

1 2 3 4

GND VCC RESET n.c. GND

PE[7..0]

PB[7..0]

PD7

PD6

PD5

PD4

2.54 m m JTAG CON

CON 2x5

RESET

VCC

DECOUPLING CAPACITOR CLOSE TO THE CONNECTOR 2 4 6 8 10

R11 100k

C20 100nF

JTAG Interface

PD[7..0]

AT45DB642D CASON8

8 7 6 5

VCC3

DECOUPLING CAPACITOR CLOSE TO THE DEVICE

C12 100nF

SI SO SCK GND RESET VCC CS WP

U2

VCC3

CON 2x5

TCK TDO TMS VCC TDI

(not mounted)

PF7

PF4 PF6 PF5

Select Lef t Up Right Down

PB5 PB6 PB7 PE4 PE5

R22

R17

1k

1k

R14

1k

In-line Grouped LEDs

R9 100k

Data Flash

Joystick Interface

LEDs

RESET

PE0 PB1 PB2 PB3

VCC3

2 1

R10 100k

VBUS

PF[7..0]

1 2 3 4

LL4148

D6

D4 LL4148

LL4148

D3

R29

R27 100k

N18WF104J03RB

VCC

5V

3

2 7

U4

GND

IN SHDN

OUT OUT FAULT CC SET

1 4 8 6 5

R12 100k

220nF C17

R30 100k

R28 220k

VBAT

VBat Mon.

C16 4.7uF

Date:

Size A4

Title

VBAT

LP3982 33nF C15 U3out=1.25*(1+(R15+R18)/R19)

AT45DB642D CASON8

8 7 6 5

VCC3

DECOUPLING CAPACITOR CLOSE TO THE DEVICE

C13 100nF

SI SO SCK GND RESET VCC CS WP

U3

VCC3

Temp Sensor

MTA Ext power supply

J8

RESET

PE1 PB1 PB2 PB3

VCC3

PF0 PF3

PB[7..0]

U5 OUT

100k

R25

100nF C18

3

A90USB Key

UVCON

LM340

GND

IN

R19 124k 1%

VCC

R13 1k

TOPLED LP M676 D1

POWER LED(RED)

VCC

M1

-

C19 4.7uF

FDV304P/FAI VBUS

VCC

UCAP

VCC3

Sheet

2

of

2

Rev 1.0.0

VBUS generator f or OTG/HOST mode 1 F
Q1 BC847B

R24 10k

R21

R20

0 !!! R21 not mounted

0

0

R16

VCC3

When mounting R21: R20 not mounted U4 not mounted Allows to generate 3.3V from U1 internal regulator CAUTION: R21 default not mounted !!!

5V

C14 4.7uF

Saturday , February 18, 2006

Document Number

Power & Interf aces

2

1

-

100k 1% R18

R15 100k 1%

VCC

Complete Schematics

Figure 6-2 . Schematics, 2 of 2

AT90USBKey Hardware Guide

Complete Schematics

Table 6-1 . Bill of material Item

Q.ty

1

2

2

10

3 4

Reference

Part

Tech. Characteristics

Package

50V-10% Ceramic

CASE 0603

10Vmin ±10%

EIA/IECQ 3216

CR1,CR2

ESD protection (PGB0010603)

C1,C2,C3,C4,C5,C6,C12, C13, C18, C20

100nF

1

C7

1uF

3

C8,C9, C17

220nF

50V-10% Ceramic

CASE 0603

5

2

C10, C11

15pF

50V-5% Ceramic

CASE 0603

6

3

C14, C16, C19

4.7uF

10Vmin ±10%

EIA/IECQ 3216

7

1

C15

33nF

50V-5% Ceramic

CASE 0603

8

2

D2,D5

LED BI-COLOUR/ LSGT670

I=10 mA_

PLCC-4

9

1

D1

TOPLED/ LPM676-K2M1

I=10 mA_

PLCC-2

10

2

D3,D4

DII 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) (Not Mounted)

13

0

J1,J2,J4,J5,J6,J7

1.27 mm Dual header

14

1

J8

Connector MTA 2 cts right angle

15

1

M1

FDV304P/FAI

16

1

Q1

BC847B

IC peak=200mA

SOT23

17

2

R2,R3

22

1/16W-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,R16,R20, R26

0

21

0

R21

0

(Not Mounted)

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,R14,R17,R22,R23

1k

1/16W-5% SMD

CASE 0603

25

2

R24,R28

10k

1/16W-5% SMD

CASE 0603

26

1

R29

N18WF104J03RB

100K - ß=4250

CASE 0603

27

2

R15,R18

100k 1%

1/16W-1% SMD

CASE 0603

28

1

R19

120k 1%

1/16W-1% SMD

CASE 0603

29

2

SW1,SW2

PUSH-BUTTON / DTSM31N

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

34

1

U6

LM340MP5.0

35

1

Y1

8MHz CRYSTAL

AT90USBKey Hardware Guide

SOT23

CASE 0603 CASE 0603

Vin Max 6V, 300mA

MSOP8

H=4mm

HC49/4H

6-21 7627A–AVR–04/06

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