https://github.com/cfrankb/pcb_ch552_devboard

CH552 Devboard with ON/OFF switch, BOOT and RESET buttons. Indicator lights and lots of pins.
https://github.com/cfrankb/pcb_ch552_devboard

ch552 ch552g devboard pcb pcb-layout

Last synced: about 1 month ago
JSON representation

CH552 Devboard with ON/OFF switch, BOOT and RESET buttons. Indicator lights and lots of pins.

• Host: GitHub
• URL: https://github.com/cfrankb/pcb_ch552_devboard
• Owner: cfrankb
• Created: 2024-10-19T17:06:31.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2026-03-05T15:46:02.000Z (about 1 month ago)
• Last Synced: 2026-03-05T17:51:06.645Z (about 1 month ago)
• Topics: ch552, ch552g, devboard, pcb, pcb-layout
• Homepage:
• Size: 2.58 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          
# CH552 DEVBOARD

## Introduction

This is a pcb design for a CH552 DEVBOARD. The board is intended to aid in the development of firmware/prototype for the CH552 and CH554 microcontrollers.

* The Power Switch (Workflow Optimization):

The CH552 enters ISP (programming) mode based on power-on state with a specific pin held. Constantly pulling a USB cable wears out the connector and is inefficient. Your switch demonstrates mechanical sympathy and an understanding of the iterative development cycle.

* The "Ground Forest" (Signal Integrity):

Adding 12x GND pins isn't overkill—it's professional. It allows you to clip a logic analyzer, an oscilloscope probe, and multiple peripherals simultaneously without creating a "rat's nest" of wires sharing a single pin.

* The "Ground Forest" (Signal Integrity): 

 Having 4 LEDs dedicated to the MCU pins allows for immediate visual confirmation of state machines or "heartbeat" signals without needing to wire up external breadboard components.

https://github.com/cfrankb/ch552_drivers/

## Schematic

![Image](images/sch_revision0.png "icon")

![Image](images/revision0a.png "icon")

## Features

 * 4 led to provide indicators

 * 12x GND pins

 * 6x 3.3v pins

 * 6x 5v pins

 * ON/OFF button

 * BOOT and RESET buttons

![Image](images/20241019_164148-crop.jpg "icon")

## Part List

|     | Part #        | REF#                   | Package            |

| --- | ------------- | ---------------------- | ------------------ |

| 1x  | 10u C         | C3                     | 0805               |

| 2x  | 100n C        | C1, C2                 | 1206               |

| 2x  | 10k Resistor  | R1, R4                 | 0805               |

| 6x  | 1k Resistor   | R2, R3, R5, R6, R7, R8 | 0805               |

| 1x  | Green Led     | D1                     | 0805               |

| 5x  | Leds          | D2, D3, D4, D5, D6     | 0805               |

| 1x  | CH552G/CH554G | U1                     | SOP16              |

| 2x  | button        | SW1, SW2               | 6x6x4.3mm DIP      |

| 1x  | USB Connector | J1                     | USB 2.0 Female DIP |

| 1x  | 1x07          | J2                     | 2.54mm pins DIP    |

| 1x  | 2x03          | J3, J5, J6, J7         | 2.54mm pins DIP    |

| 1x  | 1x05          | J4                     | 2.54mm pins DIP    |

| 1x  | 1x04          | J8                     | 2.54mm pins DIP    |

| 1x  | 1x03          | J9                     | SS12D00 DIP *      |

\* You can also use a 2.54mm pin header with a jumper cap.