Datasheet

4.7 Wiring the programmed MCU to the Vantage Pro2 console
Wiring the ATtiny25/45/85 to the console can be achieved by connecting 6 short wires
from the console expansion connector to the MCU. As SPI communication is intended
for short-distance communication only (typically between devices located on the very
same PCB), using long wires will not work. The implementation shown here has been
successfully tested with 10-15 cm wire lengths.
For friendly handling and easy removal
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of the MCU, it may be a good idea to use
a DIL-8 socket with 2.54mm pin spacing such as the TE Connectivity 1-390261-2 (Farnell
part # 1101345, Newark part # 52K3276). Soldering wires to the socket before inserting
the MCU will prevent damage to the MCU from the heat applied during soldering.
Also take note of the notch in the socket — there should be a visual ”this side up”-
indication so that the MCU can be correctly oriented.
Figure 17: The ATtiny25/45/85 (DIP8 package [22]). Notice the notch at the ”top” of the chip — the
only visible ”this side up”-mark found on this creature.
Refer to table 5 and figure 18 for details regarding the wiring between the VP2 ex-
pansion connector and the ATtiny25/45/85 MCU.
ATtiny pin # ATtiny pin/signal name Signal name VP2 pin #
3 PB4 CS/SS 1
4 GND GND 15 or 16
5 PB0 / MOSI MOSI 3
6 PB1 / MISO MISO 4
7 PB2 / SCK CLK 2
8 VCC VCC 13 or 14
Table 5: Wiring diagram for connections between the ATtiny25/45/85 MCU and the VP2 console.
NEVER short the GND and VCC lines.
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You never know when you’ll need to reprogram it.
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