
JN2 Extension Header
Pin
Circuit Net Name
MCU
Pin
Circuit Net Name
MCU
Pin
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
RESET#
NMIIN
WDTOVF#
IRQ0IN
SCK
SD-CS
LED1
LED3
LED5
PE4
PWMLP-OUT
SD2
SD3
133 * 1
-
154* 2
-
162
167
168
170
171
4
6
59
60
2
4
6
8
10
12
14
16
18
20
22
24
26
EXTAL
Ground
TXD0
RXD0
PB8
MTU2
LED2
LED4
LED6
PE5
PE7
SA0
SD4
121
-
99
98
52
166
169
172
173
5
165
21
61
Table 9-2: JN2 Extension Header
* 1 The RESET# signal connects to the MCU via the two NOT gates U2A and U2B
* 2 The WDTOVF# signal connects to the MCU via a the U3A buffer
21