Xplained Pro Power Header - Microchip Technology ATtiny3217 Xplained Pro Manual

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