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APPLICATION NOTE 

Atmel AVR32918: UC3-A3 Xplained Hardware User’s 

Guide 

32-bit Atmel Mincrocontrollers 

Features 

 

Atmel

®

 AT32UC3A3256 microcontroller 

 

64MBit SDRAM 

 

Analog input (to ADC) 

 

Temperature sensor 

 

RC filter 

 

I/O 

 

One mechanical button 

 

Four LEDs 

 

Four expansion headers 

 

Footprints for external memory 

 

Atmel AT45DB series DataFlash

®

 serial flash 

 

Atmel AT25DF series industry standard serial flash 

 

Touch 

 

One Atmel QTouch

®

 slider 

 

One Atmel QTouch button 

Introduction 

The Atmel UC3-A3 Xplained evaluation kit is a hardware platform to evaluate the 
Atmel AT32UC3A3256 microcontroller. 

The kit offers a large range of features that enables the Atmel AVR

®

 UC3 user to get 

started using UC3 peripherals right away and understand how to integrate the UC3 
device in their own design. 

Figure 1. 

UC3-A3 XPLAINED evaluation kit. 

 

32159C

AVR

07/2012

Summary of Contents for AVR32918

Page 1: ...ries DataFlash serial flash Atmel AT25DF series industry standard serial flash Touch One Atmel QTouch slider One Atmel QTouch button Introduction The Atmel UC3 A3 Xplained evaluation kit is a hardware...

Page 2: ...3256 power consumption 4 2 4 Programming the kit 5 3 Connectors 5 3 1 Programming header 5 3 2 I O expansion headers 5 4 Memories 7 5 Miscellaneous I O 7 5 1 Mechanical button 7 5 2 LEDs 7 5 3 Analog...

Page 3: ...for Atmel 8 and 32 bit AVR microcontrollers with on chip debugging for source level symbolic debugging NanoTrace if supported by the device and device programming Atmel AVR ONE AVR ONE is a profession...

Page 4: ...pin 10 on the header J3 The USB connector is the preferred input because then it is possible to connect expansion boards on top of the J3 header The 5V is regulated down to 3 3V with an on board LDO...

Page 5: ...header The AT32UC3A3256 can be programmed and debugged by connecting an external programming debugging tool to the JTAG header The header has a standard JTAG programmer pinout refer to online help in...

Page 6: ...d with onboard functionality 1 ADC0 1 PA21 RC filter output 2 ADC1 1 PA22 NTC 3 ADC2 PA23 4 ADC3 PA24 5 ADC4 PA20 6 ADC5 PA19 7 ADC6 PA18 8 ADC7 PA17 9 GND 10 VCC_ANA_P3V3 Note 1 ADC channels can be d...

Page 7: ...n industrial standard or a proprietary Atmel DataFlash serial flash Note The footprints share the same SPI lines including the chip select and so it is not possible to mount a device on both footprint...

Page 8: ...ripple on the DC voltage is proportional to the input frequency A higher input frequency will give lower ripple on the output 5 4 Touch The UC3 A3 Xplained kit has one QTouch button and one QTouch sli...

Page 9: ...tion directives regarding electromagnetic compatibility recycling WEEE FCC CE or UL except as may be otherwise noted on the board kit Atmel supplied this board kit AS IS without any warranties with al...

Page 10: ...sale of Atmel products EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS IMPLIED OR STATUTORY...

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