MattairTech MT-DB-U2, Руководство пользователя

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MT-DB-U2 Manual
Overview
Overview
Introduction
The MT­DB­U2 is a development board for the Atmel ATmega32U2 USB microcontroller. The
Atmega32U2 contains 32 KB of flash, 1 KB of RAM, 1 KB EEPROM, 22 programmable IO pins, and a
USB device controller. The board has 32 pins in a dual inline configuration with 100 mil pin spacing
and 600 mil row spacing which allows for easy mounting on a breadboard. It includes a mini USB
connector, status LED, 16MHz crystal, reset button, HWB boot jumper, 3 PWM filters, and ISP header
pads. A bootloader comes preinstalled which allows programming of the chip over USB without an
external programmer. The ISP header can be used with an external programmer for in­system
programming. This header can be reconfigured to allow the MT­DB­U2 itself to be an ISP
programmer, or to be used as a SPI master or slave. The board can be powered at 5V via USB, at
3.3V via the ATmega32U2 internal regulator and USB, or it can be powered externally (3V – 3.6V or
4.0V – 5.5V). All programmable IO pins are routed to headers, including those used by on­board
hardware. The chip can be clocked externally, and the board is compatible with HV programming. The
USB connections are also routed to header pins, which allows for panel­mount USB connectors. The
PCB is high­quality with ENIG (gold­plated) finish, red soldermask, and white screenprinting showing
the pinout. It measures approximately 1.7” x 0.8” (42mm x 20mm) and is 0.062” (1.6mm) thick.
MT­DB­U2 Features
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ATmega32U2 USB microcontroller
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32KB FLASH, 1KB SRAM, 1KB EEPROM
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USB device controller, Serial USART, and SPI communications
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2 timers with 5 PWM channels
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Arduino compatible
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CDC (Arduino/AVRDUDE) or DFU (FLIP) bootloader preinstalled
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Bitlash preinstalled (Arduino command shell)
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ISP header pads (program chip using external programmer)
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16MHz crystal
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Green Status LED
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3 RC PWM filters on each output compare pin of 16­bit timer 1 (can be disconnected)
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Reset button
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Bootloader selection jumper
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Mini USB connector
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Can be powered via USB at 5V (Vbus) or 3.3V (ATmega32U2 internal regulator)
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Can be powered externally at 3V to 3.6V or 4V to 5.5V
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All programmable IO pins routed to headers (including those used by on­board hardware)
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USB pins routed to header pins (for panel­mount USB connector)
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High­quality PCB with gold­plated finish and red soldermask
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DIL­32 board, standard 0.1" pin spacing. Can be mounted on a breadboard
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Measures approx. 1.7” x 0.8” (42mm x 20mm) and 0.062” (1.6mm) thick.
October 29, 2015 3 http://www.mattairtech.com/