STC8A8K64D4 Series Manual
Appendix G STC tool instruction manual
G.1 Overview
U8W/U8W-Mini is a series of programming tools that integrates online download and offline download. STC Universal
USB to Serial Port Tool is a programming tool that supports online download and online simulation.
Need to set pass-
through mode
Need to set pass-
through mode
Universal USB to
serial port
G.2 System Programmable (ISP) Process Description
The microcontroller is completely poweroff
Power on the microcontroller
Download the user program and
enter the user program area
Soft reset to the user program
area and run the user program
External manual reset, the microcontroller is also started from
the system ISP monitoring program area.
The MCU runs the ISP monitoring program to detect whether there
is a legal command stream, which takes tens of milliseconds to
several hundred milliseconds. If there is no legal download command
stream, it will immediately run the user program.
If [P3.2, P3.3] = [0, 0] has been set, it will judge whether to
download the user program or not. After cold start, if [P3.2,
[0, 0], then Running the user program directly will only
s, which is negligible. It is recommended that the user
select [P3.2, P3.3] if they are not [0, 0] at the same time, then
run the user program immediately and skip the system ISP
monitoring program. 【Note 1】
[Cold start programming]: The MCU is in a power-off state firstly, and the user must
first click the [Download/Program] button of the STC-ISP control software on the
PC side to send the download command stream, and then power on the MCU.
Check if P3.0 has a legitimate
download command stream
To Next Page
Loading...