Logical pinout · physical placement not verified

Vin
Display/interface power pin. Adafruit says to connect to the same power as the microcontroller logic level, for example 3V on a Feather or 5V on an Arduino.
Type · Power
Gnd
Common ground for power and logic.
Type · Ground
SCL
I2C serial clock line.
Type · I2C
SDA
I2C serial data line.
Type · I2C
SCK
SPI clock input.
Type · SPI
MOSI
SPI MOSI line, used to send data from the microcontroller to the SD card and/or display.
Type · SPI
MISO
SPI MISO line, used for the SD card; Adafruit notes it is not used for the write-only display path.
Type · SPI
DC
Display SPI data/command selector.
Type · Control
RST
Display reset line. Connecting to ground resets the display.
Type · Control
TCS
TFT or eInk SPI chip select.
Type · Unknown
GP1
General-purpose GPIO line on the EYESPI interface.
Type · GPIO
GP2
General-purpose GPIO line on the EYESPI interface.
Type · GPIO
TSCS
Touch screen chip select.
Type · Unknown
MEMCS
Memory chip select, required for communicating with onboard RAM when present.
Type · Unknown
SDCS
SD card chip select, required for communicating with onboard SD card holder when present.
Type · Unknown
Lite
PWM input for backlight control, pulled high by default; can be PWM-controlled or pulled down to turn the backlight off.
Type · Control
BUSY
Busy-detect line used by eInk displays; optional according to Adafruit.
Type · Signal
INT
Capacitive touch interrupt line; goes low when a touch is detected and is only needed for capacitive touch displays.
Type · Signal

Pin	Type	Function
Vin	Power	Display/interface power pin. Adafruit says to connect to the same power as the microcontroller logic level, for example 3V on a Feather or 5V on an Arduino.
Gnd	Ground	Common ground for power and logic.
SCL	I2C	I2C serial clock line.
SDA	I2C	I2C serial data line.
SCK	SPI	SPI clock input.
MOSI	SPI	SPI MOSI line, used to send data from the microcontroller to the SD card and/or display.
MISO	SPI	SPI MISO line, used for the SD card; Adafruit notes it is not used for the write-only display path.
DC	Control	Display SPI data/command selector.
RST	Control	Display reset line. Connecting to ground resets the display.
TCS	Unknown	TFT or eInk SPI chip select.
GP1	GPIO	General-purpose GPIO line on the EYESPI interface.
GP2	GPIO	General-purpose GPIO line on the EYESPI interface.
TSCS	Unknown	Touch screen chip select.
MEMCS	Unknown	Memory chip select, required for communicating with onboard RAM when present.
SDCS	Unknown	SD card chip select, required for communicating with onboard SD card holder when present.
Lite	Control	PWM input for backlight control, pulled high by default; can be PWM-controlled or pulled down to turn the backlight off.
BUSY	Signal	Busy-detect line used by eInk displays; optional according to Adafruit.
INT	Signal	Capacitive touch interrupt line; goes low when a touch is detected and is only needed for capacitive touch displays.

Logical pinout · physical placement not verified

Pin details

18 connections

Vin
Display/interface power pin. Adafruit says to connect to the same power as the microcontroller logic level, for example 3V on a Feather or 5V on an Arduino.
Power
Gnd
Common ground for power and logic.
Ground
SCL
I2C serial clock line.
I2C
SDA
I2C serial data line.
I2C
SCK
SPI clock input.
SPI
MOSI
SPI MOSI line, used to send data from the microcontroller to the SD card and/or display.
SPI
MISO
SPI MISO line, used for the SD card; Adafruit notes it is not used for the write-only display path.
SPI
DC
Display SPI data/command selector.
Control
RST
Display reset line. Connecting to ground resets the display.
Control
TCS
TFT or eInk SPI chip select.
Unknown
GP1
General-purpose GPIO line on the EYESPI interface.
GPIO
GP2
General-purpose GPIO line on the EYESPI interface.
GPIO
TSCS
Touch screen chip select.
Unknown
MEMCS
Memory chip select, required for communicating with onboard RAM when present.
Unknown
SDCS
SD card chip select, required for communicating with onboard SD card holder when present.
Unknown
Lite
PWM input for backlight control, pulled high by default; can be PWM-controlled or pulled down to turn the backlight off.
Control
BUSY
Busy-detect line used by eInk displays; optional according to Adafruit.
Signal
INT
Capacitive touch interrupt line; goes low when a touch is detected and is only needed for capacitive touch displays.
Signal

Cables

260 other options

Around 250 entries: JST SH/PH cable pairs, Grove and STEMMA QT/Qwiic leads, jumper wires, silicone hookup wire from 30 AWG to 8 AWG, and FPC ribbon cables. Ecosystem bridge cables exist for the PH-to-SH pitch mismatch.

View all 260

Related groups

4 groups

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USB and serial

Passive USB cables plus passive USB cables, Micro-B and USB-C breakouts, CP2102 and FT232 USB-UART bridges, DIY cable assembly parts, and USB-C development boards. Data support, host/device role and logic voltage vary significantly across the group.

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3D printing

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LED pixels

WS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.

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