Open Source STC MCU ISP flash tool

8051 mcs51 mcu microcontroller stc stc-mcu

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stcgal.py

README.md

stcgal - STC MCU ISP flash tool

stcgal is a command line flash programming tool for STC MCU Ltd. 8051 compatible microcontrollers.

STC microcontrollers have an UART/USB based boot strap loader (BSL). It utilizes a packet-based protocol to flash the code memory and IAP memory over a serial link. This is referred to as in-system programming (ISP). The BSL is also used to configure various (fuse-like) device options. Unfortunately, this protocol is not publicly documented and STC only provide a (crude) Windows GUI application for programming.

stcgal is a full-featured Open Source replacement for STC's Windows software; it supports a wide range of MCUs, it is very portable and suitable for automation.

Features

Support for STC 89/90/10/11/12/15/8 series
UART and USB BSL support
Display part info
Determine operating frequency
Program flash memory
Program IAP/EEPROM
Set device options
Read unique device ID (STC 10/11/12/15/8)
Trim RC oscillator frequency (STC 15/8)
Automatic power-cycling with DTR toggle or a custom shell command
Automatic UART protocol detection

Further information

Installation

How to use stcgal

Frequently Asked Questions

List of tested MCU models

License

stcgal is published under the MIT license.