Page 6
VCC-3.3
VOUT-3.3 VOUT-3.3
VOUT-3.3
IO14
IO12
IO13
IO15
IO2
ESP_RST
ESP_TXD
ESP_RXD
C3
10µF
VCC-3.3
VOUT-3.3
ESP_EN
LD1
PWR
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
9
8
7
6
5
4
3
2
1
GND
IO0
IO2
IO15
IO13
IO12
IO14
EN
3.3V
IO4
RXD
TXD
GND
IO5
RST
TOUT
IO16
GND
ESP-WROOM-02
U2
JT
A
G
_T
C
LK
JT
A
G
_T
D
I
JT
A
G
_T
D
O
JT
A
G
_T
M
S
MCU_RST
MCU_RST
U
A
R
T0
_R
TS
U
A
R
T0
_C
TS
U
A
R
T0
_R
X
U
A
R
T0
_T
X
ES
P_
TX
D
ES
P_
R
XD
ESP_RST
ESP_EN
UART0_TX
UART0_RX
UART0_CTS
JTAG_TMS
JTAG_TCLK
JTAG_TDO
JTAG_TDI
VOUT-3.3
VOUT-3.3
MCU_RST
R6
10k
R7
10k
R8
10k
R9
10k
R14
10k
R15
10k
C4
0.10µF
C2
0.10µF
UART0_RTS
Y2
32.768kHz
C8
12pF
C9
12pF
LD3
STAT
ST
A
TU
S_
LE
D
LD4
CONN
CONN_LED
C
O
N
N
_L
ED
R1
1k
R3
1k
1
2
3
4
5
6
7
8
9
10
J1
VCC-5V
VCC-5V
STATUS_LED
IO0
IO
0
R13
10k
IO
15
IO
13
R4
1k
C
3
D11
E11
F11
E1 D
1
D
2
C
1
C
2
B
1
A
9
A
10
A
1
B
2
A
2
A
3
B
3
D
3
D
4
A
4
B
4
C
4
A
6
A
5
B
5
D
5
B
6
C
5
C
6
D
6
A
7
A8
D
7
C
7
B
7
L2
L1
K2
K1
E2
E7
F7
A11
C11
K10
L10
H2
H1
L6
G7
E6
F3
G4
H7
K3
H4
E4
E3
F4
L11
K11
L7
B11
G2
G1
F2
F1
J2
J1
H10
MK64FN1M0VDC12
J11
H11
G11
G10
G9
G8
E10
D10
C10
B10
E9
D9
C9
F10
F9
F8
E8
B9
D8
C8
A
D
C
0_
SE
16
/C
M
P1
_I
N
2/
A
D
C
0_
SE
21
A
D
C
1_
SE
16
/C
M
P2
_I
N
2/
A
D
C
0_
SE
22
NC
NC
PTE0
PTE1/LLWU_P0
PT
A
4/
LL
W
U
_P
3
D
A
C
0_
O
U
T/
C
M
P1
_I
N
3/
A
D
C
0_
SE
23
V
R
EF
_O
U
T/
C
M
P1
_I
N
5
C
M
P0
_I
N
5/
A
D
C
1_
SE
18
PT
A
0
PT
A
1
PT
A
2
PT
A
3
D
A
C
1_
O
U
T/
C
M
P0
_I
N
4
C
M
P2
_I
N
3/
A
D
C
1_
SE
23
XT
A
L3
2
PTB17
PTB16
PTB11
PTB19
PTB10
PTB9
PTB1
LLWU_P5/PTB0
NC
PTB13
PTC0
PTB23
PTB22
PTB21
PTB20
PTB18
VSS
ADC0_DM0/ADC1_DM3
ADC0_DP1
VREGIN
VOUT33
USB0_DM
USB0_DP
VSS
PT
A
15
PTE5
VDD
PTE3
V
R
EF
H
LLWU_P6/PTC1
PTC2
RTC_WAKEUP_B
PTB12
ADC0_DP0/ADC1_DP3
ADC1_DM1
ADC1_DP1
ADC0_DM1
PT
E2
4
PT
E2
5
PT
A
16
PT
A
10
EX
TA
L3
2
V
BA
T
PT
A
5
V
R
EF
L
V
D
D
A
V
D
D
PT
A
11
PTB3
VSS
VDD
PTE6
V
SS
A
V
SS
PT
A
14
PTB2
ADC1_DM0/ADC0_DM3
ADC1_DP0/ADC0_DP3
PTE4/LLWU_P2
PTE2/LLWU_P1
PT
A
12
PT
A
13
/L
LW
U
_P
4
VSS
PTA17
VDD
PTA18
PTA19
RESET_b
PTA29
LLWU_P7/PTC3
LL
W
U
_P
9/
PT
C
5
PT
C
7
LL
W
U
_P
10
/P
TC
6
LLWU_P8/PTC4
LL
W
U
_P
14
/P
TD
4
PT
D
3
PT
D
1
LL
W
U
_P
14
/P
TD
6
LL
W
U
_P
12
/P
TD
0
PT
C
19
PT
C
16
PT
C
15
PT
D
11
PT
D
10
PT
D
9
PT
D
8
PT
D
7
PT
D
5
PT
D
12
PT
D
13
PT
C
18
PT
C
17
PT
C
10
PT
C
8
PT
C
9
LL
W
U
_P
11
/P
TC
11
PT
C
12
PT
C
13
PT
C
14
PT
D
14
PTB6
LL
W
U
_P
13
/P
TD
2
PTB8
PTB7
PT
D
15
B8
PT
E2
6
J1
0
L9
K
9
L8
K
4
L5 K
6
F6
G
6
J9
G
3
J7
H
8
J6
H
6
J5
H
5
J3 H3 L3 K5
L4
F5 G
5
E5
K
7
J8
H
9
K
8
J4
U1
MK64FN1M0VDC12
C5
2.2
µ
F
R5
10k
VOUT-3.3
C1
2.2
µ
F
VCC-5V
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN
VOUT-3.3
VCC-5V
1
2
3
4
5
ID
D+
D-
VBUS
GND
6
CN1
TVS1 TVS2
R11
27
R12
27
R10
1M
LD2
USB
VCC-3.3
VCC-USB
VCC-USB
R2
1k
GP0
GP1
GP0
GP1
D1
PMEG3010ER,115
D2
PMEG3010ER,115
Y1
12MHz
C6
12pF
C7
12pF
Figure 3: Main Schematic
