Table 3-13. Tamper Connector Pin Assignment
Signal
Pin No
Signal
COMP_N
1
2
PIOBU1
COMP_P
3
4
PIOBU4
PIOBU5
5
6
PIOBU6
PIOBU3
7
8
PIOBU2
PIOBU7
9
10
GND
3.7.2
mikroBUS Interfaces
The ATSAMA5D27-WLSOM1-EK1 hosts two pairs of 8-pin female headers acting as mikroBUS interfaces. The
mikroBUS standard defines the main board sockets and add-on boards, or Click boards, used for interfacing
microprocessors with integrated modules having proprietary pin configuration and silkscreen markings. The pinout
consists of three groups of communication pins (SPI, UART and TWI), four additional pins (PWM, interrupt, analog
input and reset) and two power groups (+3.3V and GND on the left, and 5V and GND on the right 1x8 header).
Figure 3-34. mikroBUS1 Interface Schematic
TWCK1_mBUS1_PD20
TWD1_mBUS1_PD19
MikroBus1 AN
TWCK
TWD
URXD
UTXD
MikroBus1 PWM
MikroBus1 RST
MikroBus1 CS
MikroBus1 SCK
MikroBus1 MISO
MikroBus1 MOSI
MikroBus1 INT
MIKROBUS1
AN
1
RST
2
CS
3
SCK
4
MISO
5
MOSI
6
+3.3V
7
GND
8
PWM
16
INT
15
RX
14
TX
13
SCL
12
SDA
11
+5V
10
GND
9
mikroBUS HOST
J19
INT_mBUS1_PD02
RST_mBUS1_PB31
AN_mBUS1_PD25
URXD3_mBUS1_PB11
SPI1_SPCK_mBUS1_PC01
SPI1_MOSI_mBUS1_PC02
SPI1_MISO_mBUS1_PC03
SPI1_NPCS1_mBUS1_PC05
PWM_mBUS1_PA30
VDD_MAIN
VDD_3V3
0R
0402
R103
0R
0402
R100
UTXD3_mBUS1_PB12
100k
0402
R170
VDD_3V3
ATSAMA5D27-WLSOM1-EK1
Baseboard Components
©
2019 Microchip Technology Inc.
User Guide
DS50002931A-page 36
