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AVR1907: Xplain Hardware User's Guide

Features

• ATxmega128A1 microcontroller

• External Memory

- 8MB SDRAM

- 8MB Serial Data Flash

• AT90USB1287

- Communication gateway

- Programmer for Atmel

AVR

XMEGA™

• Analog Input (to ADC)

- Temperature sensor

- Potentiometer

• Analog Output (from DAC)

- Mono speaker via audio amplifier

• Digital IO

- UART communication through USB gateway

- 8 micro switch buttons

- 8 LEDs

- 8 spare analog pins

- 8 spare digital pins

1 Introduction

The Xplain evaluation kit is a hardware platform to evaluate the ATxmega128A1.

The kit offers a larger range of features that enables the XMEGA user to get

started using the XMEGA’s peripherals right away and to get an understanding of

how to integrate the XMEGA in their own design.

Figure 1-1. Xplain evaluation kit.

8-bit

Microcontrollers

Application Note

Preliminary

Rev. 8203D-AVR-04/10

Summary of content (8 pages)

PAGE 1
AVR1907: Xplain Hardware User's Guide Features • ATxmega128A1 microcontroller • External Memory - 8MB SDRAM - 8MB Serial Data Flash • AT90USB1287 - Communication gateway - Programmer for Atmel® AVR® XMEGA™ • Analog Input (to ADC) - Temperature sensor - Potentiometer • Analog Output (from DAC) - Mono speaker via audio amplifier • Digital IO - UART communication through USB gateway - 8 micro switch buttons - 8 LEDs - 8 spare analog pins - 8 spare digital pins 8-bit Microcontrollers Application Note Prelimin
PAGE 2
Related Items FLIP (Flexible In-System Programmer) http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3886 AVR Studio 4 (Atmel’s free IDE) http://www.atmel.com/dyn/products/tools_card.asp?tool_id=2725 JTAGICE mkII (On-chip programming and debugging tool) http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3353 AVR ONE! (On-chip programming and debugging tool) http://www.atmel.com/dyn/products/tools_card.
PAGE 3
AVR1907 The preprogrammed AT90USB1287 firmware offers features such as a bootloader for self-programming and a UART-to-USB gateway. 3.2 Power supply The kit is powered from USB which leaves two options to power it: Either connects the kit to a PC through an USB cable, or to a 5V USB power supply (AC/DC adapter). 3.3 Measuring the XMEGA power consumption As part of an evaluation of the ATxmega128A1 it can be of interest to measure its power consumption.
PAGE 4
Table 4-1. XMEGA programming and debugging interface – JTAG and PDI. J100 pin JTAG(1) PDI(2) J100-1 TCK - J100-2 GND GND(3) J100-3 TDO - J100-4 VCC VCC(3) J100-5 TMS - J100-6 nSRST CLK J100-7 VCC VCC(3) J100-8 - DATA J100-9 TDI - J100-10 GND GND(3) Notes: 1. Standard pin-out for JTAGICE mkII and other Atmel programming tools. 2. Requires adapter to connect a JTAGICE mkII (refer to AVR Studio help). 3. It is only required to connect on VCC/GND pin.
PAGE 5
AVR1907 5 Attached Memories The Xplain kit demonstrates how to use the External Bus Interface (EBI) module to interface a 4-bit SDRAM. An 8MB SDRAM (16M x 4) is attached in 3-port EBI mode (PORTH, PORTK and PORTJ). An 8MB serial Dataflash® is connected to the UARTC1 which can operate in SPI master mode to interface the dataflash. 6 Miscellaneous IO 6.1 Micro switch buttons Eight micro switch buttons are connected to the XMEGA’s PORTF.
PAGE 6
8 Revision history Different revisions of the Xplain kit is released, these revisions are not fully identical it can therefore be relevant to identify the board used. 8.1 Revision 1 Revision 1 of the Xplain kit can be identified by not having a bar-code sticker on the back side. Table 8-1. Xplain revision 1 – known issues. Issue Cause Solution Speaker is noisy during programming and debugging of the ATxmega128A1 when using JTAG. Problem due to cross-talk contaminating the audio amplifier input.
PAGE 7
AVR1907 8.4 Revision 4 Revision 4 of the Xplain kit can be identified by a bar-code sticker on the back side with the following product ID: A09-0560/4. Table 8-4. Difference between Xplain revision 3 and revision 4. Difference Comment Replaced resistor R400 with a 0 ohm resistor. Reduce the noise on the power line but disable the Xplain board current measurement.
PAGE 8
Disclaimer Headquarters International Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel: (852) 2245-6100 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-enYvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg.