Parallax BASIC Stamp 2 Microcontroller Module

ParallaxSKU: RB-Plx-02
Manufacturer #: BS2-IC

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  • Stamp 2 microcontroller module
  • Processor speed: 20 MHz
  • Number of I/O Pins: 16 + 2 dedicated serial
  • Current Draw @ 5 VDC: 3mA run, 50 µA sleep
  • RoHS compliant

The Parallax BASIC Stamp 2 Microcontroller Module serves as the brains inside of electronics projects and applications that require a programmable microcontroller.  It can control and monitor timers, keypads, motors, sensors, switches, relays, lights, and more. The programming is performed in an easy-to-learn language called PBASIC.

The Parallax BASIC Stamp 2 Microcontroller Module is well-proven microcontroller with simple language.  All vital components such as processor, clock source, memory and power regulator are provided on the BS2's tiny PCB. Connect it to power and it starts functioning. The projects that need small, permanent soldering area for circuitry may benefit from combining the BS2-IC with the BASIC Stamp 2 Carrier Board (#27120) or the Super Carrier Board (#27130). ). For low cost OEM solutions, the processor (PBASIC2 interpreter) and other components are available for integration to PCB.

The BS2-IC is widely used in educational, hobby, and industrial applications. It is strongly recommended for first-time BASIC Stamp users because of plentiful resources (documentation, source code, and customer projects) that are available online and in print. The Stamps in Class Educational Program was designed with this module that makes it a great place to learn about microcontrollers. Once you have become familiar with programming in PBASIC and have designed your own projects, you may want to explore our selection of BASIC Stamps with increased power, speed, or memory. For customers who require multi-processing or video generation capabilities, we recommend the Propeller microcontroller.


  • Processor Speed: 20 MHz
  • Program Execution Speed: ~4,000 PBASIC instructions/sec.
  • RAM Size: 32 Bytes (6 I/0, 26 Variable)
  • EEPROM (Program) Size: 2 KBytes; ~500 PBASIC instructions
  • Number of I/O Pins: 16 + 2 dedicated serial
  • Current Draw @ 5 VDC: 3mA Run, 50 µA Sleep
  • Source/Sink Current per I/O: 20 mA / 25 mA
  • Source/Sink Current per unit: 40 mA / 50 mA per 8 I/O pins
  • PBASIC Commands: 42
  • Package: 24-pin DIP
  • Industrial-Rated since Rev J
  • Dimensions: 1.20 x 0.63 x 0.15 in (30.0 x 16.0 x 3.81 mm)
  • Power Requirements: 5.5 to 15 VDC (Vin), or 5 VDC (Vdd)
  • Communication: Serial (9600 baud for programming)
  • Dimensions: 1.20 x 0.63 x 0.15 in (30.0 x 16.0 x 3.81 mm)
  • Operating Temperature: -40 to +185 °F (-40 to +85 °C)

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