Atmel AT90USB162 Manuel utilisateur

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SBAT90USB162a Development Board User’s Manual

SBAT90USB162a

Atmel®

AT90USB162

Development Board

User’s manual

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SBAT90USB162a Development Board User’s Manual

1. INTRODUCTION

Thank you for choosing the SBAT90USB162a –Atmel® AT90USB162 development

board. This board is designed to give a quick and cost-effective start to develop

code and for hardware prototyping and testing.

1.1. OVERVIEW

This document describes the SBAT90USB162a development board –a cost-

effective yet feature rich, flexible and easily configurable development tool,

designed to allow easy coding and prototyping.

One of today's most widely used MCUs offering native USB support is the Atmel®

AT90USB162. It provides an easy way to add USB functionality to any new design

along with hundreds of different projects that are available.

The SBAT90USB162a is an Atmel®AT90USB162 development board. This board

is a cost-effective yet feature-rich, highly compatible, flexible and easily

configurable development tool, designed to give a quick start to develop code and

for hardware prototyping and testing. It is a clean in design solution, but still

providing configurability and flexibility not available with other products. The board

provides all the basic circuitry needed to work with AT90USB162: USB connector

and circuit, crystal, Reset and HWB buttons, power LED, power source/voltage

configuration circuitry, ISP header.

The board offers flexible power configurable via jumpers: both 3.3 V and 5 V USB-

powered or from external supply.

The board also features 100 mil headers, making it breadboard-friendly and easily

connectable to any universal board or prototyping environment.

Board design makes it compatible with other similar development boards featuring

same or similar MCUs and virtually all design/development software and libraries,

including open source.

MCU comes pre-programmed with a bootloader allowing code to be programmed

into the chip without any external programmer –simply by using FLIP software

from Atmel. To enter the bootloader mode, the RST button should be pressed and

hold, then the HWB button pressed and the RST button released.

An ISP programmer still can be used via dedicated ISP header, as well as

debugger like JTAGICE via same header.

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SBAT90USB162a Development Board User’s Manual

1.2. FEATURES

Flexible power –3.3 V or 5 V from USB bus or external 3.0 V to 5.5 V;

All MCU I/O pins are accessible;

100 mil extension headers for connection to universal or breadboards, or direct

interfacing with other devices, providing access to all I/O pins and virtually all

signals;

Mini USB connector –USB 2.0 full speed (12 Mbps) Device mode supported;

Dedicated headers for USB signals: D-, D+, VBUS;

Built-in 0.9..16 MHz crystal (default 8 MHz);

Internal or external clock;

Optional transient voltage suppression for USB data lines;

Reset (RST) button;

Hardware boot (HWB) button –allows forcing bootloader (stock Atmel®or third-

party) execution at reset (see AT90USB162 datasheet) –allows MCU

programming via USB without external programmer. I/O pin is still useable for

other purposes;

ISP (6-pin) connector supporting in-circuit programming and debugging via

debugWIRE;

FR-4 1.5 mm PCB with all terminals and components clearly marked, accepting

TQFP-32, 7x7 mm body size, 0.8 mm lead pitch.

1.3. SPECIFICATIONS

Processor

AT90USB162

Max. clock frequency

8 MHz at 2.7 V, 16MHz at 4.5 V

Flash memory

16 kBytes (10,000 write cycles)

RAM

512 Bytes (static)

EEPROM

512 Bytes (100,000 write cycles)

USB

USB 2.0 full speed (12 Mbps) Device mode

USB DPRAM

176 Bytes

I/O lines

Timers

1 8-bit, 1 16-bit

PWM channels

USART

SPI port

Programming

Via USB and hardware-initiated bootloader or

ISP connector

Debugging

Via debugWIRE interface (ISP connector)

Operating voltage

2.7 to 5.5V

Operating temperature

Industrial range -40°C to +85°C

Dimensions

38 x 38 mm (1.5 x 1.5 in) FR-4 1.5 mm

Weight

8.25 g

1.4. COMPATIBILITY

As all MCU I/O pins are accessible and all MCU powering and clocking options

are available the SBAT90USB162a is compatible with virtually every project

and development tool designed for AT90USB162 and AVR MCUs.

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SBAT90USB162a Development Board User’s Manual

1.5. OLDER VERSIONS

Earlier version of this board was known as SBAT90USB162 and

SBAT90UBS82162.

1.6. MCU OVERVIEW

The AT90USB162 is a low-power CMOS 8-bit microcontroller based on the AVR

enhanced RISC architecture. By executing powerful instructions in a single clock

cycle, the AT90USB162 achieves throughputs approaching 1 MIPS per MHz

allowing optimization of power consumption versus processing speed.

1.6.1. Features

High Performance, Low Power AVR®8-Bit Microcontroller

Advanced RISC Architecture

–125 Powerful Instructions

–Most Single Clock Cycle Execution

–32 x 8 General Purpose Working Registers

–Fully Static Operation

–Up to 16 MIPS Throughput at 16 MHz

Non-volatile Program and Data Memories

–8K / 16K Bytes of In-System Self-Programmable Flash

•Endurance: 10,000 Write/Erase Cycles

–Optional Boot Code Section with Independent Lock Bits

•USB boot-loader programmed by default in the factory

•In-System Programming by on-chip Boot Program hardware-

activated after reset

•True Read-While-Write Operation

–512 Bytes EEPROM

•Endurance: 100,000 Write/Erase Cycle

–512 Bytes Internal SRAM

–Programming Lock for Software Security

USB 2.0 Full-speed Device Module with Interrupt on Transfer Completion

–Complies fully with Universal Serial Bus Specification REV 2.0

–48 MHz PLL for Full-speed Bus Operation: data transfer rates at 12

Mbit/s

–Fully independent 176 bytes USB DPRAM for endpoint memory

allocation

–Endpoint 0 for Control Transfers: from 8 up to 64-bytes

–4 Programmable Endpoints:

•IN or Out Directions

•Bulk, Interrupt and Isochronous Transfers

•Programmable maximum packet size from 8 to 64 bytes

•Programmable single or double buffer

–Suspend/Resume Interrupts

–Microcontroller reset on USB Bus Reset without detach

–USB Bus Disconnection on Microcontroller Request

–USB pad multiplexed with PS/2 peripheral for single cable capability

Peripheral Features

–PS/2 compliant pad

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SBAT90USB162a Development Board User’s Manual

–One 8-bit Timer/Counters with Separate Prescaler and Compare

Mode (two 8-bit PWM channels)

–One 16-bit Timer/Counter with Separate Prescaler, Compare and

Capture Mode (three 8-bit PWM channels)

–USART with SPI master only mode and hardware flow control

(RTS/CTS)

–Master/Slave SPI Serial Interface

–Programmable Watchdog Timer with Separate On-chip Oscillator

–On-chip Analog Comparator

–Interrupt and Wake-up on Pin Change

On Chip Debug Interface (debugWIRE)

Special Microcontroller Features

–Power-On Reset and Programmable Brown-out Detection

–Internal Calibrated Oscillator

–External and Internal Interrupt Sources

–Five Sleep Modes: Idle, Power-save, Power-down, Standby, and

Extended Standby

I/O and Packages

–22 Programmable I/O Lines

–QFN32 (5x5 mm) / TQFP32 packages

Operating Voltages

–2.7 - 5.5 V

Operating temperature

–Industrial (-40 °C to +85 °C)

Maximum Frequency

–8 MHz at 2.7 V - Industrial range

–16 MHz at 4.5 V - Industrial range

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SBAT90USB162a Development Board User’s Manual

1.6.2. Block diagram

1.6.3. Memory map

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SBAT90USB162a Development Board User’s Manual

2. USING THE SBAT90USB162a

This section describes the board and all its features

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SBAT90USB162a Development Board User’s Manual

2.1. SCHEMATIC

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SBAT90USB162a Development Board User’s Manual

2.2. BOARD DESCRIPTION AND CONFIGURATION

2.2.1. Clock

By default the clock is internal from 0.9..16 MHz(1) crystal oscillator, or internal

calibrated RC oscillator. External(2) clock via XT1 (P6-12) is also possible. For

using external clock CKSEL fuses must be programmed (see AT90USB162

datasheet).

Note: 1. Default is 8 MHz crystal, other is possible by request.

2. XT2 (PC0) can be used as generic I/O depending on MCU configuration.

2.2.2. Reset button (S2)

Cold reset can be done manually by RST button (S2).

2.2.3.HWB button (S1)

The hardware boot button allows forcing bootloader execution after reset (see

AT90USB162 datasheet) thus allowing MCU programming via USB without

external programmer. The HWB mode is active only when the HWBE fuse is

enabled. In that case PD7/HWB pin is configured as input during reset and

sampled during reset rising edge.

Programming via USB is based on pre-programmed USB bootloader, located in the

on-chip boot section of the AT90USB162. This is the easiest and fastest way to

reprogram the device directly over the USB interface, but with certain limitations.

To force bootloader execution, operate as follows:

Press both “RST” and “HWB” buttons;

Release the “RST” button;

Release the “HWB” button.

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SBAT90USB162a Development Board User’s Manual

FLIP (Flexible In-system Programmer) is the software provided by Atmel®to do in-

system programming of Flash devices through RS232, USB or CAN. For further

details regarding programming via USB, please refer to FLIP documentation.

Note: In order to use FLIP, driver installation is required. USB drivers come with

FLIP and can be found in its install folder. With Windows®operating system,

depending on version used, digitally signed drivers might be required. As they may

not be supplied by Atmel®, third-party signed drivers can be downloaded from the

net. Maxidax Ltd. doesn’t supply any drivers.

Tip: After programming is complete press the “RST” button.

Other bootloaders are also supported.

2.2.4. USB connector

Mini-B USB (P1)(1) is available.

USB Mini connector pinout:

Signal

Description

VCC

+5 V

D-

Data -

D+

Data +

NC for type B

GND

Ground

USB signals are available via headers as follows:

Signal

Header

VBUS

D-

D+

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