Pololu P-Star 25k50 Micro


The Pololu P-Star 25K50 Micro is a general-purpose programmable module based on Microchip’s PIC18F25K50 microcontroller, which has 32 KB of flash program memory, 2 KB of RAM, and built-in USB functionality. Onboard features of the P-Star (abbreviated P*) include a 16 MHz crystal, a USB Micro-B connector, and three user-controllable indicator LEDs. A voltage regulator and power selection circuit allow the board to be powered from either USB or an external 5.5 V to 15 V source, while a resettable PTC fuse on the USB VBUS supply and reverse protection on VIN help protect it from accidental damage. The board ships with a USB bootloader that makes it easy to program the PIC microcontroller without using an external programmer.

5 in stock


Package Contents:

Pololu P-Star 25k50 Micro

Two 1×10-pin breakaway 0.1″ male headers
One 1×6-pin breakaway 0.1″ male header are included with the P-Star 25K50 Micro. These header pins can be soldered in to use the board with perfboards, breadboards, or 0.1″ female connectors.
*This product requires a USB A to Micro-B cable (not included) to connect to a computer.

Technical Specifications of Pololu P-Star 25k50 Micro

Dimensions: 1″ × 0.6″ (1.05″ × 0.6″ including USB Micro-B connector)
Programmable Microchip PIC18F25K50 microcontroller
32 KB flash (8 KB used by bootloader, leaving 24 KB available for user program by default)
256 bytes of EEPROM
Native full-speed USB (12 Mbps)
5 V logic voltage
Internally clocked at 48 MHz, resulting in execution speeds up to 12 million instructions per second (MIPS)
Precision 16 MHz crystal
Many I/O lines in a small package
16 user I/O lines along the sides of the board
3 additional I/O pins available in other locations
13 pins can be configured as analog inputs
2 PWM output signals (one of which can be sent to four different pins)
5-bit digital-to-analog converter (DAC) output
Three user-controllable LEDs
USB Micro-B connector
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
Bootloader is usable from Windows, Linux, and Mac OS X with open source software
No external programmer required
Compatible with standard Microchip compilers, development tools, and programmers
P-Star pin out


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