MT-X1S ATxmega128a1 USB dev board, MicroSD, RS-232 or RS-485

Updated: Aug 2, 2012

Description

Quick Overview

The MT-X1S is a flexible USB development board for the Atmel ATxmega128a1 microcontroller. Included is a MicroSD card slot, 32KB SPI SRAM, audio amplifier, lowside / relay driver, temperature sensor, RS-232 or RS-485, 4 LEDs, and an onboard 1.25V precision reference for the ADC. This reference is setup to work with the XMEGA errata. The XMEGA can be programmed over USB using the onboard AVRISP mkII compatible PDI programmer. The XMEGA can communicate with a computer using the onboard USB to serial bridge. Speeds up to 2Mbps are supported in synchronous mode (1Mbps in asynchronous mode). The Atmel AT90USB162 USB AVR, which provides these features, will automatically sleep when USB is disconnected. The board can be powered via USB or an external header. Voltage is regulated by a 3.3V, 1A LDO regulator. There are several clock options available onboard, including a 32.768KHz crystal, an external clock, an external HC49 crystal landing, and several internal clock options. Most XMEGA pins are routed to headers. The included peripheral devices are connected to the XMEGA via solder jumpers, which allows use of the pins if the device is not used. A demo program is preinstalled on the XMEGA demonstrating use of each peripheral device, as well as demonstrating sleep mode. Additionally, an Atmel Studio 6 ASF template is provided. All software used on both the XMEGA and USB AVR is open-source.

MT-X1S Features

* Atmel XMEGA 128A1 (chip rev. H), 128KB flash, 8KB RAM
* Onboard USB PDI programmer (no external programmer needed)
---- AVRISPmkII compatible
---- Program flash, EEPROM, fuses, lock bits, and more
---- Works with AVR Studio 4 and 5, Atmel Studio 6, AVRDUDE, Codevision, and BASCOM
* USB - Serial Bridge
---- Up to 2MHz baud rate (1MHz async)
---- Synchronous or asynchronous operation
---- Optional USB ready signal
* 3.3V, 1A LDO regulator
* Powered via USB or external header
* 32.768KHz crystal connected to TOSC (RTC) pins
* HC49 crystal landing connected to XTAL pins
* Most pins routed to headers (Port A through Port K)
* Solder jumpers can be used to disconnect devices when not used (frees up header pin)
* MicroSD card slot with push-push spring action
* 32KB SPI SRAM chip
* 8 channel lowside / relay driver with kickback protection
---- Up to 70mA per channel
---- 5V or 3.3V devices (relays, LCD backlights, etc.)
---- Can be used as general-purpose lowside driver
* Audio amplifier connected to XMEGA DAC
* Temperature sensor with low-power operation
* 1.25V precision voltage reference
---- Works with XMEGA ADC errata
---- Use for signed differential conversions from 0V to ~2.5V at the pin
---- Routed to both reference inputs via solder jumpers
* Choice of RS-232 or RS-485 serial interface, with powerdown and 3-pin screw terminal
* 4 LEDs
* JTAG (XMEGA), PDI (XMEGA)*, and ISP (USB AVR) headers
* 4 boot modes selectable via jumper and button
---- Serial bridge (default)
---- AVRISPmkII compatible PDI programmer
---- Configuration (uses terminal emulator)
---- DFU bootloader (to update firmware on USB AVR via USB)
* Boot button can be used to toggle between the PDI programmer and the serial bridge
* Entire board can consume down to 75uA or less in sleep mode
* Atmel Studio 6 ASF (Atmel Software Framework) template to get started quickly
* Preloaded demo program demonstrates onboard peripheral devices as well as sleep mode
* PCB measures 10cm x 5cm
* Compatible with Windows XP/Vista/7 and Linux
* All firmware is open-source
* Uses LUFA USB library and AVRISPmkII clone by Dean Camera (http://www.fourwalledcubicle.com/)

Copyright (c) 2009-2012, Justin Mattair
Copyright (c) 2009-2012, Dean Camera
Copyright (c) 2003-2012, Atmel Corporation
Copyright (c) 2009, CHaN
Copyright (c) 2010, Peter Kwan

Categories

• Development Board