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Note on use
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electronic components distributor
4
RESET
LVSS
LVCC
SW1
TP8
U1
1
10
11
1
LED 1
P00C
LED 2
P01C
P02C
LED 3
P03C
LED 4
LED 5
P04C
LED 6
P05C
P06C
LED 7
P07C
LED 8
111
1
P60
LED 9
P61
LED 10
P62
LED 11
P63
LED 12
P64
LED 13
P65
LED 14
P66
LED 15
P67
LED 16
230
221
39
40
CN4
MCU board
Be careful of the following thing the time of using this board.
• Please do not use AC adapter except accessories.
• When you supply a power supply from AC adapter, terminals TP2 (VCC) and TP3 (VSS) for
an external power supply input should presuppose that it is open,and should not supply an ex-
ternal power supply.
• Terminal for an external power supply input When you supply a power supply from TP2
(VCC) and TP3 (VSS), please set SW2 (AC adapter power supply switch) to OFF by setting
5 V/3.3 V power supply selection jumper plug (JP3/JP4) as opening,and use AC adpter side
power supply supply, separating it completely
• Be sure to use 5 V/3.3 V power supply selection jumper plug (JP3/JP4) by the same setup.
When a different setup is performed, 5 V power supply and 3.3 V power supply may short-
circuit, and it may become the cause of incorrect operation.
AVSS
AVR
AVCC
VSS
VCC
POWER
TP7
TP6
TP5
TP4
TP3
TP2
LED17
+3.3V
AVSS
AVR
AVCC
POWER
+5V
JP7
JP6 JP5
JP3
MOD
JP4
JP8
CAP.
CN3
CN5
Evaluation
MCU
PJ1
1
2
Figure. 4 AC adapter connection
U7
H1
SW2
POWER-SW
AC adapter
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