AVR600: STK600 Expansion, routing and socket boards 1 Introduction This application note describes the process of developing new routing, socket and 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 package and pin out to the generic pin headers. It also features an expansion area where most part pins are available. 8-bit Microcontrollers Application Note 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 AVR600 2.2 Physical dimensions and component placement Figure 2-2. Routing card connector pad placement and dimensions Figure 2-3. Clip hole dimensions The board thickness should be 1.6mm to be compatible with the clips. Note that components on the main board might conflict with through hole mounted or secondary side mounted components. Areas with such components are highlighted in the next figure 3 8170B-AVR-12/10 Figure 2-4. Height restricted areas due to main board components 2.3 STK600 socket connectors pinout The following figure shows the pinout for the STK600 headers. This correspond to the routing card connectors J1 and J2 Figure 2-5. STK600 Socket connectors pin out 4 AVR600 8170B-AVR-12/10 AVR600 Table 2-2. STK600 J201 left, routing card J1 connector pin out Signal name Pin number Signal name VTG 2 1 GND PA1 4 3 PA0 PA3 6 5 PA2 PA5 8 7 PA4 PA7 10 9 PA6 VTG 12 11 GND PB1 14 13 PB0 PB3 16 15 PB2 PB5 18 17 PB4 PB7 20 19 PB6 VTG 22 21 GND PC1 24 23 PC0 PC3 26 25 PC2 PC5 28 27 PC4 PC7 30 29 PC6 VTG 32 31 GND PD1 34 33 PD0 PD3 36 35 PD2 PD5 38 37 PD4 PD7 40 39 PD6 VTG 42 41 GND PE1 44 43 PE0 PE3 46 45 PE2 PE5 48 47 PE4 PE7 50 49 PE6 VTG 52 51 GND PF1 54 53 PF0 PF3 56 55 PF2 PF5 58 57 PF4 PF7 60 59 PF6 VTG 62 61 GND PG1 64 63 PG0 PG3 66 65 PG2 PG5 68 67 PG4 PG7 70 69 PG6 VTG 72 71 GND PH1 74 73 PH0 PH3 76 75 PH2 5 8170B-AVR-12/10 Signal name Pin number Signal name PH5 78 77 PH4 PH7 80 79 PH6 VTG 82 81 GND AREF0 84 83 XTAL1 AREF1 86 85 XTAL2 TGT_MOSI 88 87 GND TGT_MISO 90 89 TOSC1 TGT_SCK 92 91 TOSC2 TDI 94 93 TGT_RESET TDO 96 95 GND TMS 98 97 Vext TCK 100 99 Vcc Table 2-3. STK600 J202 right, routing card connector J2 pin out Signal name 6 Pin number Signal name VTG 2 1 GND PJ1 4 3 PJ0 PJ3 6 5 PJ2 PJ5 8 7 PJ4 PJ7 10 9 PJ6 VTG 12 11 GND PK1 14 13 PK0 PK3 16 15 PK2 PK5 18 17 PK4 PK7 20 19 PK6 VTG 22 21 GND PL1 24 23 PL0 PL3 26 25 PL2 PL5 28 27 PL4 PL7 30 29 PL6 VTG 32 31 GND PM1 34 33 PM0 PM3 36 35 PM2 PM5 38 37 PM4 PM7 40 39 PM6 VTG 42 41 GND PN1 44 43 PN0 PN3 46 45 PN2 PN5 48 47 PN4 AVR600 8170B-AVR-12/10 AVR600 Signal name Pin number Signal name PN7 50 49 PN6 VTG 52 51 GND PP1 54 53 PP0 PP3 56 55 PP2 PP5 58 57 PP4 PP7 60 59 PP6 VTG 62 61 GND PQ1 64 63 PQ0 PQ3 66 65 PQ2 PQ5 68 67 PQ4 PQ7 70 69 PQ6 VBUST 72 71 DP UVCON 74 73 DN Vcc 76 75 UID Vext 78 77 GND TGT_PDATA1 80 79 TGT_PDATA0 TGT_PDATA3 82 81 TGT_PDATA2 TGT_PDATA5 84 83 TGT_PDATA4 TGT_PDATA7 86 85 TGT_PDATA6 TGT_PCTRL1 88 87 TGT_PCTRL0 TGT_PCTRL3 90 89 TGT_PCTRL2 TGT_PCTRL5 92 91 TGT_PCTRL4 TGT_PCTRL7 94 93 TGT_PCTRL6 BOARD_ID1 96 95 BOARD_ID0 BOARD_ID3 98 97 BOARD_ID2 BOARD_ID5 100 99 BOARD_ID4 2.3.1 Signal descriptions Table 2-4. Socket card connector pin description STK600 Signal name MCU Comment PAx, PBx etc PAx, PBx etc 1-to-1 mcu pin mapping VTG Vcc Target supply rail controlled by AVR Studio® / STK600 GND GND AREFx AREF Analog reference voltage, controlled by AVR Studio / STK600 XTALx XTALx Clock pins connected to oscillator on STK600. 7 8170B-AVR-12/10 STK600 Signal name MCU Comment TGT_SCK, TGT_MISO, TGT_MOSI ISP pins ISP programming interface TGT_TDI, TGT_TDO, TGT_TMS, TGT_TCK JTAG pins JTAG programming interface VBUST VBUS VBUS (sense) for USB UID UID ID pin for USB OTG UVCON UVCON USB VBUS generation control for USB OTG. A low level on this signal enables VBUS generation. DP, DN DP, DN USB differential pair TGT_PDATA(0-7) (HV) data pins Data pins for high voltage (PP/HVSP) programming. TGT_CTRL0 (HV) BS2 TGT_CTRL1 (HV) Ready/Busy TGT_CTRL2 (HV) /OE TGT_CTRL3 (HV) /WR TGT_CTRL4 (HV) BS1 TGT_CTRL5 (HV) XA0 TGT_CTRL6 (HV) XA1 TGT_CTRL7 (HV) PAGEL Control signals for High voltage Parallell Programming / Serial Programming. Please refer to AVR datasheet for further information. On AVRs with common XA1/BS2, XA1 is used. On AVRs with common BS1/PAGEL, BS1 is used. none ID system for router / socket / expansion cards, see section 5 ID System BOARD_IDn Notes: 1. Not all AVR will have every pin (ex. two aref pins, tosc or usb) 2. A MCU pin will fan-out to both Pnx pin and to the programming interface(s) located at that pin. 3 Socket cards Socket cards route each pin from the IC socket to separate pins on the spring loaded connectors on the bottom side, facing the routing card. 3.1 Power design issues Since all routing is handled by the routing card, even power lines and power decoupling is ignored at the socket card. This produces less than ideal power design which may lead to unwanted noise, ground bounce and other effects. It should therefore be expected that heavily loaded designs can not run at full speed on STK600. Likewise, such power design is not recommended for custom designs. 3.2 Connector MPN Table 3-1. Socket card connector 8 Manufacturer and MPN Quantity Comment SAMTEC, FSI-140-03-G-D-AD 2 Spring loaded 80-pin connector AVR600 8170B-AVR-12/10 AVR600 3.3 Physical dimensions and component placement Figure 3-1. Socket card connector placement and dimensions 105mm 94mm 66mm Note! 45° ST1 FSI-140 J2 FSI-140 69mm 82mm J1 7mm The board thickness should be 1.6mm to be compatible with the clips. 4 Expansion cards The STK600 features an expansion area where cards for custom peripherals like memory expansion, LCD etc can be placed. STK600 routes all part pins and power to the expansion card connectors. 4.1 Connector MPN Table 4-1. Expansion card connector Manufacturer and MPN Quantity FCI, 61082-101402LF 2 Comment 9 8170B-AVR-12/10 4.2 Physical dimensions and component placement Figure 4-1. Expansion card connector placement and dimensions There is no requirement to board thickness. 10 AVR600 8170B-AVR-12/10 AVR600 4.3 STK600 Expansion connectors pin out Figure 4-2. Pinout for expansion connectors Table 4-2. STK600 J301 “expand0” connector pin out Signal name Pin number Signal name VTG 2 1 GND PA1 4 3 PA0 PA3 6 5 PA2 PA5 8 7 PA4 PA7 10 9 PA6 VTG 12 11 GND PB1 14 13 PB0 PB3 16 15 PB2 PB5 18 17 PB4 PB7 20 19 PB6 VTG 22 21 GND PC1 24 23 PC0 PC3 26 25 PC2 PC5 28 27 PC4 PC7 30 29 PC6 VTG 32 31 GND 11 8170B-AVR-12/10 Signal name Pin number Signal name PD1 34 33 PD0 PD3 36 35 PD2 PD5 38 37 PD4 PD7 40 39 PD6 VTG 42 41 GND PE1 44 43 PE0 PE3 46 45 PE2 PE5 48 47 PE4 PE7 50 49 PE6 VTG 52 51 GND PF1 54 53 PF0 PF3 56 55 PF2 PF5 58 57 PF4 PF7 60 59 PF6 VTG 62 61 GND PG1 64 63 PG0 PG3 66 65 PG2 PG5 68 67 PG4 PG7 70 69 PG6 VTG 72 71 GND PH1 74 73 PH0 PH3 76 75 PH2 PH5 78 77 PH4 PH7 80 79 PH6 VTG 82 81 GND AREF0 84 83 XTAL1 AREF1 86 85 XTAL2 TGT_MOSI 88 87 GND TGT_MISO 90 89 TOSC1 TGT_SCK 92 91 TOSC2 TDI 94 93 TGT_RESET TDO 96 95 Vcc6 TMS 98 97 GND TCK 100 99 Vcc6 Table 4-2. STK600 J302 “expand1” connector pinout Signal name 12 Pin number Signal name VTG 2 1 GND PJ1 4 3 PJ0 AVR600 8170B-AVR-12/10 AVR600 Signal name Pin number Signal name PJ3 6 5 PJ2 PJ5 8 7 PJ4 PJ7 10 9 PJ6 VTG 12 11 GND PK1 14 13 PK0 PK3 16 15 PK2 PK5 18 17 PK4 PK7 20 19 PK6 VTG 22 21 GND PL1 24 23 PL0 PL3 26 25 PL2 PL5 28 27 PL4 PL7 30 29 PL6 VTG 32 31 GND PM1 34 33 PM0 PM3 36 35 PM2 PM5 38 37 PM4 PM7 40 39 PM6 VTG 42 41 GND PN1 44 43 PN0 PN3 46 45 PN2 PN5 48 47 PN4 PN7 50 49 PN6 VTG 52 51 GND PP1 54 53 PP0 PP3 56 55 PP2 PP5 58 57 PP4 PP7 60 59 PP6 VTG 62 61 GND PQ1 64 63 PQ0 PQ3 66 65 PQ2 PQ5 68 67 PQ4 PQ7 70 69 PQ6 Vext 72 71 GND Vext 74 73 GND GND 76 75 Vcc GND 78 77 Vcc TGT_PDATA1 80 79 TGT_PDATA0 TGT_PDATA3 82 81 TGT_PDATA2 13 8170B-AVR-12/10 Signal name Pin number Signal name TGT_PDATA5 84 83 TGT_PDATA4 TGT_PDATA7 86 85 TGT_PDATA6 TGT_PCTRL1 88 87 TGT_PCTRL0 TGT_PCTRL3 90 89 TGT_PCTRL2 TGT_PCTRL5 92 91 TGT_PCTRL4 TGT_PCTRL7 94 93 TGT_PCTRL6 Vcc3 96 95 GND BOARD_ID1 98 97 BOARD_ID0 BOARD_ID7 100 99 BOARD_ID6 5 ID System The STK600 features an id system to identify which routing, socket and expansion card is attached. The STK600 can impose voltage limitations based on the IDs, and AVR Studio will notify the user if the combination is incorrect. The ID system consists of two common output and two board unique input signals. Each input is one of sixteen possible values based in the input signals – giving a total id space of 256. Three IDs are reserved for custom use and can be implemented without use of ICs. Table 5-1. IDs reserved for custom use Type ID Board limited to 1.8 V 0xCA Board limited to 3.3 V 0xCC No limit on voltage 0xCF The id 0xff indicates no board present. 5.1 Signal usage Table 5-2. ID system signal usage 14 name Direction Function BOARD_ID0 Output (A) Common output to functions BOARD_ID1 Output (B) Common output to functions BOARD_ID2 Input Input from routing card BOARD_ID3 Input Input from routing card BOARD_ID4 Input Input from socket card BOARD_ID5 Input Input from socket card BOARD_ID6 Input Input from expansion card BOARD_ID7 Input Input from expansion card AVR600 8170B-AVR-12/10 AVR600 5.2 ID functions The functions and their output according to input A and B B A 0 1 2 3 4 5 6 7 8 9 10 11 12 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 13 1 0 1 1 14 0 1 1 1 15 1 1 1 1 Functions as logic expressions Function Expression ID 0 0 0x0 1 A+ B AB B AB A A⊕ B 0x1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 AB AB A⊕ B A B + AB B B + A⋅ B A+ B 1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xA 0xB 0xC 0xD 0xE 0xF 5.3 Examples For a socket card to report the ID 0xAC: Route BOARD_ID0 to BOARD_ID4 and BOARD_ID1 to BOARD_ID5 Figure 5-1. Socket card id example 15 8170B-AVR-12/10 For an expansion card to report the ID 0xCF: Route BOARD_ID0 to BOARD_ID6 and VCC to BOARD_ID7 Figure 5-2. Expansion card id example For a router card to report the ID 0xCC: Route BOARD_ID0 to both BOARD_ID2 and BOARD_ID3. Figure 5-3. Routing card id example 6 Design example To support a new package type one would typically start with designing the socket card. The pinout between the socket card and routing card is not defined and left to the designer. An example is given in figure 6-1 Next is the design of the routing card (figure 6-3). The routing cards role is to connect each pin from the socket card to the corresponding pin on STK600. In addition to decoupling etc, the routing card should also fan-out the correct signals to programming headers. Each card in the stack has its own board_id pins, the routing card is responsible for passing on the signal to the socket card. 16 AVR600 8170B-AVR-12/10 AVR600 Figure 6-1. Schema capture of socket card Both the socket and routing card must also include the clip holes: Figure 6-2. Clip holes included in schematic. 17 8170B-AVR-12/10 Figure 6-3. Schema capture of routing card Copyright © 2008, Atmel Corporation 18 AVR600 8170B-AVR-12/10 Disclaimer Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: (+1)(408) 441-0311 Fax: (+1)(408) 487-2600 www.atmel.com Atmel Asia Limited Unit 01-5 & 16, 19F BEA Tower, Milennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon HONG KONG Tel: (+852) 2245-6100 Fax: (+852) 2722-1369 Atmel Munich GmbH Business Campus Parkring 4 D-85748 Garching b. Munich GERMANY Tel: (+49) 89-31970-0 Fax: (+49) 89-3194621 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chou-ku, Tokyo 104-0033 JAPAN Tel: (+81) 3523-3551 Fax: (+81) 3523-7581 © 2010 Atmel Corporation. All rights reserved. / Rev.: CORP072610 ® Atmel , logo and combinations thereof, and others are registered trademarks of Atmel Corporation or its subsidiaries. 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