Programming Tool for STC8G/8H Microcontrollers

Description

With this tool, STC8G/8H microcontrollers can be flashed via a simple USB-to-serial converter by utilizing the factory built-in embedded UART bootloader.

Preparations

If necessary, a driver for the USB-to-serial converter used must be installed.

Installation

Ensure that the prerequisites for installing Python packages are met. Then execute the following command in the command line:

pip install stc8isp

Usage

• Connect your USB-to-serial converter to your MCU as shown below.
• Run stc8isp.py (see below for arguments).
• Perform a power cycle of your MCU (reconnect to power) when prompted.

USB2SERIAL         STC8G/8H
+--------+         +------+
|     VCC| --/ --> |VCC   |    interruptible (for power cycle)
|     RXD| --|R|-- |P3.1  |    resistor (100R - 1000R)
|     TXD| --|<|-- |P3.0  |    diode (e.g. 1N5819)
|     GND| ------- |GND   |    common ground
+--------+         +------+

Usage: stc8isp [-h] [-p PORT] [-t TRIM] [-e] [-f FLASH]

Optional arguments:
  -h,       --help          show this help message and exit
  -p PORT,  --port PORT     set COM port (default: /dev/ttyUSB0)
  -t TRIM,  --trim TRIM     trim IRC to frequency in Hz (128000 - 36000000)
  -e,       --erase         perform chip erase (implied with -f)
  -f FLASH, --flash FLASH   write BIN file to flash

Example:
stc8isp -p /dev/ttyUSB0 -t 24000000 -f firmware.bin

Links

• MCU Flash Tools
• MCU Templates
• MCU Development Boards
• AVR Development Boards
• AVR Programmers
• SAMD Development Boards