Data Sheet
• Can be powered from USB or external source regulated to 5 V by onboard regulator
• Operating voltage: 5.5 V to 15 V
◦ Can operate down to 3.8 V with decreased logic voltage
• Reverse-voltage protection on external power input
• PTC fuse on VBUS supply
• Ships with a proprietary USB bootloader developed by Pololu for the P-Star (see Section 6)
• Bootloader is usable from Windows, Linux, and Mac OS X with open source software
[https://github.com/pololu/p-load]
• No external programmer required
• Compatible with standard Microchip compilers, development tools, and programmers
1.1. Supported operating systems
The Pololu USB Bootloader Utility (p-load), which is used to load programs onto the P-Star, works on Windows
Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Linux, and Mac OS X. The utility does not work
on Windows XP. The source code [https://github.com/pololu/p-load] is available, so it should be possible to port it to
more operating systems.
Pololu P-Star 25K50 Micro User’s Guide © 2001–2017 Pololu Corporation
1. Overview Page 4 of 38