3.
Hardware
This chapter describes the hardware features of the WFI32-IoT board.
Figure 3-1. WFI32-IoT Board Block Diagram
Power Switch
(MIC2042)
(1)
32.768 kHz
Crystal
Digital Temperature
Sensor
(MCP9808)
(1)
Reset Button
Two User Buttons
mikroBUS
TM
Socket
Wi-Fi Module
(WFI32E01PCI)
(1)
GPIO/I2C/UART/SPI
External SPI Flash
(SST26VF032B)
(1)
SPI1
Four User
Configurable LEDs
GPIO
MCLR
SOSC
I2C
GPIO
Ambient Light
Sensor
I2C
ICSP
PGEC/PGED
PKOB4 Controller
(ATSAME70N21B-CNT)
(1)
USB-UART Converter
(MCP2200)
(1)
USB D+, D-
UART
USB
UART1
UART3 UART
UART2/
SPI2
SPI
Battery
Management
(MCP73871)
(1)
Li-PO Battery
Connector
5V
4.2V
Micro
USB
Type B
USB Hub
(USB2514B-IM2)
(1)
LDO
(MCP1727)
(1)
LDO
(MCP1727)
(1)
3.3V
MEMS Oscillator
(DSC6011HI1B-024)
(1)
MEMS Oscillator
(DSC6011JI1B-012)
(1)
Microchip Devices
Note:
1.
Using Microchip’s total system solution, which includes complementary devices, software drivers and
reference designs, is highly recommended to ensure the proven performance of the WFI32-IoT boards. For
more details, go to
or contact your local Microchip Sales office.
3.1
Power Supply
The following are the power supply sources to power the WFI32-IoT board; see the following figure:
• PKOB4 Micro-B USB (Debug USB) (
)
• Battery Header (
)
EV36W50A
Hardware
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003262A-page 8