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.
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
8-bit
Microcontrollers
Application Note
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
SAMTEC, FSI-140-03-G-D-AD
SAMTEC, FSI-150-03-G-D-AD
Quantity
2
2
Comment
80 pins To socket card (top)
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
VTG
PA1
PA3
PA5
PA7
VTG
PB1
PB3
PB5
PB7
VTG
PC1
PC3
PC5
PC7
VTG
PD1
PD3
PD5
PD7
VTG
PE1
PE3
PE5
PE7
VTG
PF1
PF3
PF5
PF7
VTG
PG1
PG3
PG5
PG7
VTG
PH1
PH3
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
Pin number
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
Signal name
GND
PA0
PA2
PA4
PA6
GND
PB0
PB2
PB4
PB6
GND
PC0
PC2
PC4
PC6
GND
PD0
PD2
PD4
PD6
GND
PE0
PE2
PE4
PE6
GND
PF0
PF2
PF4
PF6
GND
PG0
PG2
PG4
PG6
GND
PH0
PH2
5
8170B-AVR-12/10
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