Quick insights into embedded systems

Short reads with clear diagrams. Each one explains a single idea in about three minutes.

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Microcontrollers & architecture

What is inside the chip, how it reaches memory, and how it comes to life.

MCU vs MPU

Why one chip runs your thermostat and another runs Linux.

3 min read
Harvard vs von Neumann

One bus or two: how a CPU fetches code and data.

3 min read
The memory map

Where Flash, SRAM and peripherals live in one address space.

3 min read
Registers: GPRs vs SFRs

The CPU's scratchpad vs the switches that drive hardware.

3 min read
The clock system

From a crystal to 72 MHz: oscillators, PLLs and prescalers.

3 min read
Reset and boot sequence

What happens between power-on and the first line of main().

3 min read