Adafruit USB Host FeatherWing with MAX3421E

Adafruit, MIT

Lots of microcontrollers these days have USB ports on them, to program or debug, act like a keyboard or disk drive, or simply send data between a computer and your firmware.

USB-Aleft-end
USB Type-A host port for sending or receiving data from an attached USB device with the MAX3421E, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Type · connectorVoltage · 5V bus power from onboard 5V 1A boost supply when enabled
MOSI
SPI MOSI signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Type · spi
MISO
SPI MISO signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Type · spi
SCK
SPI clock signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
Type · spi
CS
SPI chip-select for the MAX3421E on the FeatherWing, also broken out near the middle of the board, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts

Start wiring

I2S · SPI · 5V bus power from onboard 5V 1A boost supply when enabled · Controls 5V USB-A bus power; active behaviour is disable when tied to GND

Verify supply voltage and logic levels before powering up.

Module pins: MOSI, MISO, SCK. Schematik maps them to your board in the app.

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4 groups

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Displays

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Boards · Microcontroller boards · 24 parts

Pin	Position	Type	Function	Voltage
USB-A	left-end	connector	USB Type-A host port for sending or receiving data from an attached USB device with the MAX3421E, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts	5V bus power from onboard 5V 1A boost supply when enabled
MOSI		spi	SPI MOSI signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
MISO		spi	SPI MISO signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
SCK		spi	SPI clock signal between Feather host and MAX3421E USB host chip, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
CS		digital input	SPI chip-select for the MAX3421E on the FeatherWing, also broken out near the middle of the board, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
IRQ		digital output	Interrupt request output from the MAX3421E USB host chip to the Feather host, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
GPX	towards-centre	digital io	MAX3421E general-purpose multiplexed push-pull output pin for advanced users, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
5V Enable	towards-centre	control	Disable 5V power to the USB-A port by tying this pin to ground, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts	Controls 5V USB-A bus power; active behaviour is disable when tied to GND
5V Enable Jumper	back	jumper	Open rear jumper; soldering it connects 5V enable to MAX3421E GPOUT0 for software control over SPI, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts
RST	top-left-button	reset	Reset line connected to the FeatherWing reset button and reset pin, source: https://learn.adafruit.com/adafruit-usb-host-featherwing-with-max3421e/pinouts

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards