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boards:mt128 [2022/11/11 13:09]
darron [Resources] 		boards:mt128 [2022/11/21 19:06] (current)
darron
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 Plugging this board into a usbtiny or usbasp connected to a RPi Plugging this board into a usbtiny or usbasp connected to a RPi
-has the tendency to crash the Pi due to inrush current into this board. It +may crash the Pi due to inrush current. It 
-is more sensible to utilise a usbasp which can remove the power to the +is  sensible to utilise a programmer which can disable (or not supply) target power and power this board using  its AC input.
-target and power this board using the its AC input.+
    
 ===Test=== ===Test===
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 avrdude done.  Thank you. avrdude done.  Thank you.
 +</code>
 +
 +===Pinout===
 +
 +==JTAG==
 +
 +__Male socket__
 +<code>
 +  1 TCK  2 GND
 +  3 TDO  4 5V
 +K 5 TMS  6 RESET
 +  7 5V   8 NC
 +  9 TDI 10 GND
 +</code>
 +
 +__Female plug__
 +<code>
 +  2 GND   1 TCK
 +  4 5V    3 TDO
 +  6 RESET 5 TMS K
 +  8 NC    7 5V
 + 10 GND   9 TDI
 +</code>
 +
 +K=KEY
 +
 +==ISP==
 +
 +__Male socket__
 +
 +<code>
 +  1 MOSI  2 5V
 +  3 NC    4 GND
 +K 5 RST   6 GND
 +  7 SCK   8 GND
 +  9 MISO 10 GND
 +</code>
 +
 +K=KEY
 +
 +==RS-232==
 +
 +__DB9 female socket__
 +
 +<code>
 +5 3 3 2 1
 + 9 8 7 6
 +</code>
 +
 +<code>
 +1 NC
 +2 TXD
 +3 RXD
 +4 NC
 +5 GND
 +6 NC
 +7 NC
 +8 NC
 +9 NC
 </code> </code>