Microchip Technology ATtiny3217 Xplained Pro Manual page 14

...........continued
EXT1 Pin ATtiny3217 Pin
8 [PWM(-)] PB1
9 [IRQ/GPIO] PA5
10 [SPI_SS_B/GPIO] PA4
11 [I²C_SDA] PA1
12 [I²C_SCL] PA2
13 [USART_RX] PB3
14 [USART_TX] PB2
15 [SPI_SS_A] PC3
16 [SPI_MOSI] PC2
17 [SPI_MISO] PC1
18 [SPI_SCK] PC0
19 [GND] -
20 [VCC] -
1) Not connected by default, see
Note: Signal functions in italic use alternative pin location. These have to be configured in the PORTMUX register of
the device.
Table 4-2. Extension Header EXT3
EXT3 Pin ATtiny3217 Pin Function
1 [ID] -
2 [GND] -
3 [ADC(+)] -
4 [ADC(-)] -
5 [GPIO1] PC5
6 [GPIO2] -
7 [PWM(+)] -
8 [PWM(-)] -
9 [IRQ/GPIO] PB6
10 [SPI_SS_B/GPIO] PB5
11 [I²C_SDA] PA1
12 [I²C_SCL] PA2
13 [USART_RX] PB3
14 [USART_TX] PB2
15 [SPI_SS_A] PA3
16 [SPI_MOSI] PC2
17 [SPI_MISO] PC1
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2020 Microchip Technology Inc.
Function Shared Functionality
TC/W1 -
IRQ/GPIO -
GPIO -
I²C SDA EXT3
I²C SCL EXT3
UART RX EXT3,
UART TX EXT3,
SPI SS -
SPI MOSI EXT3
SPI MISO EXT3
SPI SCK EXT3
- Ground
- Power for extension board
4.5.1 Connecting the 32.768 kHz Crystal
Shared Functionality
- Communication line to the ID chip on an extension board
- Ground
-
-
GPIO SW1
-
-
-
IRQ/GPIO EDBG DGI
GPIO SW0
I²C SDA EXT1
I²C SCL EXT1
UART RX EXT1,
UART TX EXT1,
GPIO / SPI_SS -
SPI MOSI EXT1
SPI MISO EXT1
User Guide
ATtiny3217 Xplained Pro
Hardware User Guide
and EDBG I²C
and EDBG I²C
(1)
EDBG CDC, and Crystal
(1)
EDBG CDC, and Crystal
and EDBG SPI
and EDBG SPI
and EDBG SPI
for more information.
and UPDI debug connector
and EDBG DGI
and EDBG I²C
and EDBG I²C
EDBG CDC, and Crystal
EDBG CDC, and Crystal
and EDBG SPI
and EDBG SPI
(1)
(1)
DS50002765B-page 14