Web Site: www.parallax.com Office: (916) 624-8333 Forums: forums.parallax.com Fax: (916) 624-8003 Sales: sales parallax.com Sales: (888) 512-1024 Technical: support parallax.com Tech Support: (888) 997-8267 Propeller Mini ( 32150) The Propeller Mini is a low cost solution for embedding a controller in hard to reach places, where a full sized development board is not practical. Though small in size and component count, it has the necessary features that you would look for in a control board. You can solder wires and leads directly to the through holes on the board, or solder in a male or female header for easy connectivity to a breadboard or prototyping board. Features Propeller P8X32A-M44 multi-core microcontroller 64 KB EEPROM for program storage Removable 5 MHz crystal Access to 19 general-purpose I/O pins 40-pin male/male header included Onboard voltage regulators provide 3.3 VDC regulated output 400 mA max, 5 VDC regulated output 600 mA max Key Specifications Power requirements: 6.5 to 12 VDC through VIN Pin Communication: Prop Plug for programming (not included) Operating temperature: -40 to +185 F (-40 to +85 C) PCB dimensions: 0.81 x 1.52 in (20.5 X 38.6 mm) NOTE: Programming the Propeller Mini requires a Prop Plug and USB A to Mini B cable (Parallax 32201), not included. You may optionally solder a section of the single-row header to the four pins on the bottom edge of the Propeller Mini to accommodate the Prop Plugs 4-pin female socket. CAUTION: Although it is of a similar size and form factor, the Propeller Mini is not pin-compatible, nor code-compatible with the discontinued Spin Stamp (Parallax SS1-IC). Do not attempt to plug a Propeller Mini into any socket meant for a 24-pin BASIC Stamp module. Copyright Parallax Inc. Propeller Mini ( 32150) v1.2 1/28/2014 Page 1 of 2 Pin Definitions & Assignments Pin Definition/Assignment P0-P18 General-purpose I/O P28 = IC Clock, P29 = IC Data P28-P29 Connects to 32 KB EEPROM for SCL & SDA non-volatile program and data storage RX serial communication to USB. P30 & RX Used on Prop Plug Connection. TX serial communication to USB. P31 & TX Used on Prop Plug Connection. Propeller reset pin, inverted. Pulled to VDD. Driven low on internal reset. RST Drive low to externally reset the Propeller. 5 V Regulator output. Do not draw more than 600 mA if also using the 5V 3.3V output, as the 3.3 V regulator can use up to 400 mA of the 5 V regulators output. 3.3V Regulator output. Maximum 3.3 current draw of 400 mA. VSS Ground GND Ground Voltage Input: regulated 6.512 VDC VIN 1A Programming the Propeller Mini The 4-pin programming connection along the end of the board is designed to use with a 4-pin header plugged into the Prop Plug. You may optionally solder the 4-pin header directly to these through holes. However, these through holes were deliberately designed with slightly tighter spacing than the typical 0.1 spacing, to provide a friction-fit for a 4-pin header. This allows you to plug in the Prop Plug for programming and/or communication and remove it again without the need to solder and unsolder. Tip: for programming the Propeller Mini with Propeller GCC, choose the GENERIC board type. Board type can be selected in the Project Manager pane of SimpleIDE. Resources and Downloads Find the latest version of this document, the PCB schematic, and other resources on the Propeller Mini product page. Go to www.parallax.com and search by product number: 32150. Revision History V1.1: added Programming the Propeller Mini paragraph, above. V1.2: EEPROM upgraded to 64 KB. Boards purchased before 1/21/2014 feature a 32 KB EEPROM. Copyright Parallax Inc. Propeller Mini ( 32150) v1.2 1/28/2014 Page 2 of 2