STK525 ............................................................................................. hardware user guide
STK525 hardware user guide user guide 1 7608a?avr?04/06 section 1 introduction ........................................................................................... 1-3 1.1 overview ...................................................................................................1-3 1.2 STK525 starter kit features .....................................................................1-4 section 2 using the STK525................................................................................. 2-6 2.1 overview ...................................................................................................2-6 2.2 power supply ............................................................................................2-7 2.3 reset ....................................................................................................2-10 2.4 at90usbxxx avr microcontroller..........................................................2-11 2.5 serial links .............................................................................................2-11 2.6 on-board resources...............................................................................2-14 2.7 stk500 resources .................................................................................2-19 2.8 in-system programming .........................................................................2-20 2.10 test points ..............................................................................................2-23 2.11 configuration pads .................................................................................2-24 2.12 solder pads ............................................................................................2-25 section 3 troubleshooting guide ....................................................................... 3-26 section 4 technical specifications ..................................................................... 4-27 section 5 technical support............................................................................... 5-28 section 6 complete schematics ......................................................................... 6-29
STK525 hardware user guide 1-3 7608a?avr?04/06 section 1 introduction congratulation for acquiring the avr? STK525 starter kit. this kit is designed to give designers a quick start to develop code on the at90usbxxx and for prototyping and testing of new designs. 1.1 overview this document describes the STK525 dedicated to the at90usbxxx avr microcontroller. this board is designed to allow an easy evaluation of the product using demonstration software. to complement the evaluation and enable additional development capability, the STK525 can be plugged into the atmel stk500 starter kit board in order to use the at90usbxxx with advanced features such as variable vcc, variable vref, variable xtal, etc. and supports all avr development tools. to increase its demonstrative capabilities, this stand alone board has numerous on- board resources (usb, rs232, joystick, data-flash, microphone and temperature sensor). this user guide acts as a general getting started guide as well as a complete technical reference for advanced users.
introduction 1-4 STK525 hardware user guide 7608a?avr?04/06 figure 1-1 . STK525 board 1.2 STK525 starter kit features the STK525 provides the following features: at90usbxxx tqfp device (2.7v |