Parallax Inc P2X8C4M64P, 32bit Microcontroller MCU, Propeller, 25MHz, 16 kB ROM, 100-Pin TQFP

The Parallax Inc “P2” Propeller is a multicore microcontroller containing 8 identical 32-bit processors connected to a common hub. The hub provides a shared RAM, a CORDIC math solver, and housekeeping facilities. Each of the 64 identical smart I/O pins are capable of many autonomous analog and digital functions. The smart I/O pins are accessible by each processor to maximize application flexibility, and are externally powered at 3.3 V in blocks of four to maximize analog performance.

512 KB of contiguous RAM in a 20-bit address space
Six different clock modes, all under software control with glitch-free switching between sources
Operating temperature ranges from -40 to +185 °F
64-bit free-running counter which increments every clock, cleared on reset
Mechanisms for starting, polling, and stopping cogs