The ARM Cortex-M4 microcontroller, specifically the Giant Gecko S1 model, features a single-core 32-bit processor operating at a speed of 72 MHz. Its memory includes 2 megabytes of flash storage, which is organized as 2 million bits by 8 bits per cell. The chip has a 64-pin quad flat no-lead (QFN) package measuring 9mm by 9mm.