ATSTK600-RC94 Microchip

AVR600: STK600 Expansion, routing and socket boards 1 Introduction 8-bit This application note describes the process of developing new routing, socket and Microcontrollers expansion cards for the STK 600. It also describes the physical parameters for creating such cards. The STK600 starter kit from Atmel has a sandwich design to match a specific part Application Note package and pin out to the generic pin headers. It also features an expansion area where most part pins are available. While the variety of IC packages is relatively limited, the number of possible pin outs increases rapidly with the number of pins. i.e. a 6 pin IC can have 720 (6!) different pin outs! The routing / socket card design provides a low cost solution to support upcoming devices as the socket is the cost driving factor. STK600 users might also want to create their own routing cards to include specialized hardware to prototype their design. Figure 1-1. STK600 router and socket card Rev. 8170B-AVR-12/10 2 Routing cards The routing cards sit between the generic socket card and the STK600. It has one pair of electric pads underneath to mate with the STK600 spring loaded connector, and one pair of pads on top where the socket card connector connects. A part specific card with the target IC soldered on can be viewed as a routing card without the top pads. 2.1 Connector footprints A Routing card should have pads to mate with the following spring loaded connectors: Table 2-1. Router card connectors Manufacturer and MPN Quantity Comment SAMTEC, FSI-140-03-G-D-AD 2 80 pins To socket card (top) SAMTEC, FSI-150-03-G-D-AD 2 100 pins To STK600 (bottom) Figure 2-1. PCB land pattern for mating to FSI connectors 2 AVR600 8170B-AVR-12/10