Adafruit Pro Trinket

Compact 5 V, 16 MHz ATmega328P board with 18 exposed GPIO, native low-speed USB bootloading and an FTDI-compatible serial header.

Logical pinout · physical placement not verified

D10D10
Type · GPIO
MOSIMOSI
Type · SPI
MISOMISO
Type · SPI
SCKSCK
Type · SPI
A0A0
Type · Analog
A1A1
Type · Analog
A2A2
Type · Analog
A3A3
Type · Analog
SDASDA
Type · I2C
SCLSCL
Type · I2C
A6A6
Type · Analog
A7A7
Type · Analog
D0D0
Type · GPIO
D1D1
Type · GPIO
D3D3
Type · GPIO
D4D4
Type · GPIO
D5D5
Type · GPIO
D6D6
Type · GPIO
D8D8
Type · GPIO
D9D9
Type · GPIO

Pin	Position	Type
D10	D10	GPIO
MOSI	MOSI	SPI
MISO	MISO	SPI
SCK	SCK	SPI
A0	A0	Analog
A1	A1	Analog
A2	A2	Analog
A3	A3	Analog
SDA	SDA	I2C
SCL	SCL	I2C
A6	A6	Analog
A7	A7	Analog
D0	D0	GPIO
D1	D1	GPIO
D3	D3	GPIO
D4	D4	GPIO
D5	D5	GPIO
D6	D6	GPIO
D8	D8	GPIO
D9	D9	GPIO

Logical pinout · physical placement not verified

Pin details

20 connections

D10
GPIO
D10
MOSI
SPI
MOSI
MISO
SPI
MISO
SCK
SPI
SCK
A0
Analog
A0
A1
Analog
A1
A2
Analog
A2
A3
Analog
A3
SDA
I2C
SDA
SCL
I2C
SCL
A6
Analog
A6
A7
Analog
A7
D0
GPIO
D0
D1
GPIO
D1
D3
GPIO
D3
D4
GPIO
D4
D5
GPIO
D5
D6
GPIO
D6
D8
GPIO
D8
D9
GPIO
D9

Start wiring

USB · 3.3 V

Confirm the data interface matches your host board.

Module pins: D10, MOSI, MISO, SCK, A0, A1, A2, A3. Schematik maps them to your board in the app.

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