Microchip Technology ATtiny3217 Xplained Pro, Manual

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Pin Number Pin Name Description
3 ADC(+) Analog-to-Digital Converter; alternatively, a pin for the positive terminal of a
differential ADC.
4 ADC(-) Analog-to-Digital Converter; alternatively, a pin for the negative terminal of a
differential ADC.
5 GPIO1 General purpose I/O pin.
6 GPIO2 General purpose I/O pin.
7 PWM(+) Pulse-Width Modulation; alternatively, a pin for the positive part of a
differential PWM.
8 PWM(-) Pulse-Width Modulation; alternatively, a pin for the negative part of a
differential PWM.
9 IRQ/GPIO Interrupt request pin and/or general purpose I/O pin.
10 SPI_SS_B/GPIO Slave select pin for Serial Peripheral Interface (SPI) and/or general purpose
I/O pin.
11 I
2
C_SDA Data pin for I
2
C interface. Always connected, bus type.
12 I
2
C_SCL Clock pin for I
2
C interface. Always connected, bus type.
13 UART_RX Receiver pin of target device UART.
14 UART_TX Transmitter pin of target device UART.
15 SPI_SS_A Slave select for SPI. This pin should preferably not be connected to anything
else.
16 SPI_MOSI SPI master out slave in pin. Always connected, bus type.
17 SPI_MISO SPI master in slave out pin. Always connected, bus type.
18 SPI_SCK SPI clock pin. Always connected, bus type.
19 GND Ground pin for extension boards.
20 VCC Power pin for extension boards.
3.5.2 Xplained Pro Power Header
The power header can be used to connect external power to the ATtiny3217 Xplained Pro kit. The kit automatically
detects and switches to an external power source, if supplied. The power header can also be used to supply power to
external peripherals or extension boards. Ensure that the total current does not exceed the recommended current
limit of the on-board regulator when using the 3.3V pin.
Table 3-6. Xplained Pro Power Header
Pin Number Pin Name Description
1 VEXT_P5V0 External 5V input pin
2 GND Ground pin
3 VCC_P5V0
Unregulated 5V pin (an output, derived from one of the input
sources)
4 VCC_P3V3
Regulated 3.3V pin (an output, used as the main power
supply for the kit)
ATtiny3217 Xplained Pro
Xplained Pro
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2020 Microchip Technology Inc.
User Guide
DS50002765B-page 11