3.4
mikroBUS Socket
A mikroBUS socket (
) 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
Pin Description of mikroBUS
Socket
Pin on WFI32E01PC Module
(1)
1
AN
Analog input
AN14/ANN0/CVD14/CVDR14/RPA14/RA14
2
RST
Reset
ETH_CLK_OUT/CVDT10/RPC12/RC12
3
CS
SPI Chip Select
CVDT13/ETXD0/RPC15/RC15
4
SCK
SPI Clock
SCK2/RPA11/RA11
5
MISO
SPI Host Input Client Output
PTA_WLAN_ACTIVE/RPK5/RK5
6
MOSI
SPI Host Input Client Input
BT_CLK_OUT/RPK4/RK4
7
+3.3V
3.3V power
+3.3V
8
GND
Ground
GND
9
GND
Ground
GND
10
+5V
5V power
+5V
11
SDA
I2C Data
SDA1/RPA5/RA5
12
SCL
I2C Clock
SCL1/RPA4/RA4
13
TX
UART transmit
PTA_BT_ACTIVE/RPK7/RK7
14
RX
UART receive
TDI/PGD4/AN9/CVD9/CVDR9/RPB9/RB9
15
INT
Hardware interrupt
ANN1/CVD15/CVDR15/RPA13
16
PWM
PWM output
ANA0/RPB12/RB12
Notes:
1.
For more details on the WFI32E01PC module pins, refer to the
PIC32MZ1025W104 MCU and WFI32E01
module with Wi-Fi
®
and Hardware-based Security Accelerator Data Sheet
(
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.
EV36W50A
Hardware
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003262A-page 12
