BASIC Stamp 2p40 Microcontroller Module (BS2P40)


These BASIC Stamp Modules are fully tested, working new old stock (NOS). The photo is for representation only as the revision of the modules may vary. See the description below for complete product details.

1 in stock

SKU: SC00035 Category: Tags: , , , ,


The BASIC Stamp 2p40 serves as the brains inside of electronics projects and applications that require a programmable microcontroller.  It is able to control and monitor timers, keypads, motors, sensors, switches, relays, lights, and more. Programming is performed in an easy-to-learn language called PBASIC.

All vital components (processor, clock source, memory, power regulator) are provided on the BS2p40’s tiny PCB; just connect power and go!  For lower-cost OEM solutions, the processor (PBASIC2p40 interpreter) and other components are available for integration into your PCB.

The BS2p40-IC is useful for those that have previous experience with the BS2 and would like more speed, variable space, program space, I/O pins, or built-in support for character LCDs and the I2C and 1-Wire protocols; for example, LCDIN / LCDOUT, I2CIN / I2COUT, OWIN / OWOUT and POLLIN / POLLOUT / POLLMODE / POLLRUN / POLLWAIT.


Key Features:

  • Small form factor requires little space
  • Non-volatile memory holds up to 4,000 instructions even without power
  • PBASIC commands are easy to learn and remember
  • Processor Speed: 20 MHz Turbo; ~12,000 PBASIC instructions/sec
  • PBASIC Commands: 61
  • Package: 40-pin DIP
  • I/O pins: 32 + 2 dedicated serial
  • RAM Size: 38 Bytes (12 I/O, 26 Variable)
  • Scratch Pad RAM: 128 bytes
  • EEPROM (Program) Size: 8 x 2 KBytes; ~4,000 PBASIC instructions
  • Voltage requirements: 5.5 to 12 VDC (Vin), or 5 VDC (Vdd)
  • Current requirements: 40 mA Run, 350 μA Sleep
  • Source/Sink Current per I/O: 30 mA / 30 mA
  • Source/Sink Current per unit: 60 mA / 60 mA per 8 I/O pins
  • Communication: Serial (9600 baud for programming)
  • Dimensions: 2.20 x 0.63 x 0.15 in (55.9 x 16.0 x 3.81 mm)
  • Operating temp range: +32 to +158 °F (0 to +70 °C)


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