Mikrobus Socket - Microchip Technology WFI32-IoT User Manual

3.4

mikroBUS Socket

A mikroBUS socket (J402) expands the functionality of the WFI32-IoT board using the MikroElectronika mikroBUS
™
Click adapter boards. The mikroBUS connector consists of the following:
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I2C)
• Universal Asynchronous Receiver-Transmitter (UART)
• Reset (GPIO)
• Pulse Width Modulation (PWM)
• Analog and interrupt lines
• 3.3V and 5V power lines
Table 3-1. mikroBUS Socket Pinout Details
Pin Number Pin on mikroBUS
Socket
1 AN
2 RST
3 CS
4 SCK
5 MISO
6 MOSI
7 +3.3V
8 GND
9 GND
10 +5V
11 SDA
12 SCL
13 TX
14 RX
15 INT
16 PWM
Notes:
1. For more details on the WFI32E01PC module pins, refer to the PIC32MZ1025W104 MCU and WFI32E01
module with Wi-Fi
2. The SPI interface on the click board can operate up to 12.5 MHz, and the WFI32E01PC module supports up to
20 MHz.
3. To have a fully functional UART click board, the R432 and R435 (default) resistors are populated on the
WFI32-IoT board.
4. To have a fully functional CAN click board, populate the R433 and R434 resistors on the WFI32-IoT board.
5. To have a fully functional OLED click board, depopulate the R436 resistor on the WFI32-IoT board.
©
2022 Microchip Technology Inc.
and its subsidiaries
Pin Description of mikroBUS
Socket
Analog input
Reset
SPI Chip Select
SPI Clock
SPI Host Input Client Output
SPI Host Input Client Input
3.3V power
Ground
Ground
5V power
I2C Data
I2C Clock
UART transmit
UART receive
Hardware interrupt
PWM output
®
and Hardware-based Security Accelerator Data Sheet (DS70005425).
Pin on WFI32E01PC Module
AN14/ANN0/CVD14/CVDR14/RPA14/RA14
ETH_CLK_OUT/CVDT10/RPC12/RC12
CVDT13/ETXD0/RPC15/RC15
SCK2/RPA11/RA11
PTA_WLAN_ACTIVE/RPK5/RK5
BT_CLK_OUT/RPK4/RK4
+3.3V
GND
GND
+5V
SDA1/RPA5/RA5
SCL1/RPA4/RA4
PTA_BT_ACTIVE/RPK7/RK7
TDI/PGD4/AN9/CVD9/CVDR9/RPB9/RB9
ANN1/CVD15/CVDR15/RPA13
ANA0/RPB12/RB12
User Guide
EV36W50A
Hardware
™
(1)
DS50003262A-page 12