Hardware User Guide; Power Distribution; Connectors - Microchip Technology ATtiny817 Xplained Pro Manual

4.

Hardware User Guide

4.1

Power Distribution

ATtiny817 Xplained Pro has two power sources; EDBG USB and external 5.0V. The kit will automatically
select the source to draw power from. The kit has two on-board 3.3V voltage regulators, one for the
EDBG and XAM, and one for the ATtiny817 and other peripherals.
Figure 4-1. Power Supply Block Diagram
EDBG & XAM
Power
Measurement
Select
4.2

Connectors

The following sections describe the implementation of the relevant connectors and headers on the
ATtiny817 Xplained Pro and their connection to the ATtiny817. The tables of connections in the sections
also describe which signals are shared between the headers and on-board functionality. The figure below
shows all available connectors and jumpers on ATtiny817 Xplained Pro.
©
2017 Microchip Technology Inc.
Regulator 3.3V
VCC_P3V3
Regulator 3.3V
VCC_MCU
ATtiny817
Jumper
Peripherals
VCC_TARGET
ATtiny817 Xplained Pro
VCC_P5V0
Auto mux
User Guide
External 5V
input
EDBG USB
Power converter
Power consumer
Power source
Power switch
DS50002684A-page 14