The BASIC Stamp 2p24 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 BS2p24's tiny PCB; just connect power and go! Projects needing small, permanent soldering area for circuitry may benefit from combining the BS2p24-IC with the BASIC Stamp 2 Carrier Board (#27120) or the Super Carrier Board (#27130).  For lower-cost OEM solutions, the processor (PBASIC2p24 interpreter) and other components are available for integration into your PCB.

The BS2p24-IC is useful for those that have previous experience with the BS2 and would like more speed, more variable space, more program space, 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 (see BASIC Stamp Syntax & Reference Manual for more details)

For customers that require true multi-processing or video generation, we highly recommend the Propeller microcontroller.

Features:

• Processor Speed: 20 MHz Turbo
• Program Execution Speed: ~12,000 PBASIC instructions/sec.
• RAM Size: 38 Bytes (12 I/0, 26 Variable)
• Scratch Pad RAM: 128 bytes
• EEPROM (Program) Size: 8 x 2 KBytes; ~4,000 PBASIC instructions
• Number of I/O Pins: 16 + 2 dedicated serial
• Current Draw @ 5 VDC: 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
• PBASIC Commands: 61
• Package: 24-pin DIP
• Industrial-Rated since Rev. D

Key Specifications:

• Power Requirements: 5.5 to 12 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)

Note: The BS2p is also available in a 40-pin module with 32 I/O pins (#BS2p40-IC) 

Downloads & Resources:
BASIC Stamp 2p24 Schematic Rev.D (.pdf)
BASIC-Stamp-2p-Firmware-Revision-Details-(05-2008) (.pdf)
BASIC Stamp Documentation
BASIC Stamp Software
BASIC Stamp Module Comparison (.pdf)
BASIC Stamp FAQ (.pdf)