ATtiny817 Xplained Mini

4.2.1 ATtiny817 Xplained Mini Arduino Compatible Footprints

The ATtiny817 Xplained Mini has a pin-out that is compatible with Arduino shields, which can be mounted in the marked positions (J200, J201, J202, J203, and J204).

Table 4-1. J200 ISP/SPI Header
J200	ATtiny817 Pin	Arduino Numbering	Functions	Comment
1	PC1	MISO	SPI MISO	Shared with J201
2		VCC	VCC_P5V0
3	PC0	SCK	SPI SCK	Shared with J201
4	PC2	MOSI	SPI MOSI	Shared with J201
5	PC5	RESET	GPIO	Shared with J201, J203, and user button
6	GND	GND	GND

Table 4-2. J201 Digital I/O High Header
J201	ATtiny817 Pin	Arduino Numbering	Functions	Comment
1	PC5	D8	TCA_W5	Not connected by default. Can be connected by adding a 0Ω resistor to R204. Shared with J200, J203, and user button.
2	PA0	D9	UPDI	Not connected by default. Can be connected by adding a 0Ω resistor to R200. Shared with UPDI.
3	PC3	D10	SPI SS
4	PC2	D11	SPI MOSI	Shared with J200
5	PC1	D12	SPI MISO	Shared with J200
6	PC0	D13	SPI SCK	Shared with J200 and user LED
7	GND	GND
8		AREF
9	PA1	D14	I²C SDA
10	PA2	D15	I²C SCL

Table 4-3. J202 Digital I/O Low Header
J202	ATtiny817 Pin	Arduino Numbering	Functions	Comment
1	PB3	D0	UART RX	Shared with mEDBG CDC
2	PB2	D1	UART TX	Shared with mEDBG CDC
3	PB4	D2	TCA W1
4	PB5	D3	TCA W2
5	PA3	D4	TCA W3
6	PC4	D5	TCA W4
7	PB6	D6
8	PB7	D7

Table 4-4. J203 Power Header
J203	ATtiny817 Pin	Arduino Numbering	Functions	Comment
1		NC
2	VCC	IOREF	VCC_TARGET
3	PC5	RESET	GPIO	Disconnected by not mounted 0Ω resistor R208. Shared with J200, J201, and user button.
4		3.3V	VCC_P3V3
5		5.0V	VCC_P5V0
6	GND	GND
7	GND	GND
8		VIN		External voltage input

Table 4-5. J204 Analog I/O Header
J204	ATtiny817 Pin	Arduino Numbering	Functions	Comment
1	PA4	A0	AIN04
2	PA5	A1	AIN05
3	PA6	A2	AIN06	Shared with QTouch Button 1
4	PA7	A3	AIN07	Shared with QTouch Button 2
5	PB1	A4	AIN10
6	PB0	A5	AIN11

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.