...........continued
Data Field
Data Type
Example Content
Maximum voltage [mV]
uint16_t
3600
Maximum current [mA]
uint16_t
30
3.4
Power Sources
The ATtiny3217 Xplained Pro kit can be powered by several power sources, as listed in the following table.
Table 3-4. Power Sources for ATtiny3217 Xplained Pro
Power Source
Voltage Requirements
Current Requirements
Connector Marking
External power
5V ±2% (±100 mV) for USB
host operation. 4.3V to
5.5V if a USB host
operation is not required.
The recommended value
for the maximum current is
2A
PWR
Embedded debugger USB
4.4V to 5.25V (according to
USB specification)
500 mA (according to USB
specification)
DEBUG USB
The kit automatically detects the available power sources and chooses which to use according to the following
priority:
1.
External power.
2.
Embedded debugger USB.
Info:
External power is required when 500 mA from a USB connector is not enough to power the board
with possible extension boards.
3.5
Xplained Pro Headers and Connectors
3.5.1
Xplained Pro Standard Extension Header
All Xplained Pro kits have many dual-row, 20-pin, 100 mil extension headers. The Xplained Pro MCU boards have
male headers, while the Xplained Pro extensions have their female counterparts. The following table provides the pin
description of all the connected pins.
Info:
Not all pins are always connected to all extension headers.
The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU boards or
to access the pins of the target microcontroller on the Xplained Pro boards.
Table 3-5. Xplained Pro Standard Extension Header
Pin Number
Pin Name
Description
1
ID
Pin to communicate with the ID chip on an extension board.
2
GND
Ground.
ATtiny3217 Xplained Pro
Xplained Pro
©
2020 Microchip Technology Inc.
User Guide
DS50002765B-page 10
