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PCB Design for ARM Cortex-M3

This project involves the schematic and PCB design of an Arduino like PCB for ARM Cortex-M3 MCU (32-bit MCU, 64 KB Flash, 20 KB Internal RAM, 37 I/Os, 48-pin LQFP, -40 to 85 degC, Tray)

A 9V Battery connector and a Voltage Regulator were used from the side of the Power Supply.

For the MCU, several circuits were designed, such as Bypass Capacitors for the Analog and Digital Power, Crystal Oscillators, Reset Button, Serial Wire Debug Interface, Boot Options and the routing of 30 GPIO pins.

Schematic MCU

Schematic Power Supply

PCB before Polygons

PCB after Polygons

Bill of Materials


Tiny Arduino PCB

This project involves the schematic and PCB design of a small PCB containing a tiny Arduino MCU, defined by the component ATtiny85-20SU. Specifically, it contains an 8-bit AVR Microcontroller with In-System Programmable Flash, 2.7 to 5.5 V, 20 MHz, 8 KB Flash, 0.5 KB EEPROM, 0.5 KB SRAM, -40 to 85 degC, 8-Pin SOIC (8S2).

Schematic

PCB


Altium 5V Regulator PCB design

This project involves the schematic and PCB design of a 5V Voltage Regulator using commercial components and the add-on Altium Library Loader.

For the design I used capacitors, LM7805 regulator and a Schottky diode.

Schematic

PCB


Buck Converter with Altium

This project involves the schematic design and Simulation of a Buck converter of a Buck Converter with Altium, as it was assigned for my Power Electronic courses.

Requirements

Vin = 12V

Vout = 5V

I_load= 2A

f = 400KHz

Duty cycle = Vin/Vout = 5/12 = 0.416

Schematic

PWD simulation with V2

Simulation


USB to UART PCB

The Silicon Labs' CP2102 is a small module designed to convert interfaces between USB and UART, serving as a convenient interface converter.

CP2102-GM

Schematic

The schematic contains CP2102-GM (Single-Chip USB to UART Bridge, 1024 Bytes EEPROM, -40 to 85 degC, 28-pin QFN, Tube)

PCB

The PCB design will consist of a two-layer configuration where all the components will be placed on the top layer.