EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: keenox on November 15, 2023, 05:52:58 pm
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Hi!
Just bought 3 pcs FG-100 from Aliexpress and saw that they should come with Atmega328P and thought I could reprogram them, but mine came with some unmarked IC. Thought it is an Atmega chinese clone, but the pinout doesn't quite match. It only has one pin for GND and one for VCC. I marked what I managed to trace from the buttons and the programming header.
Any idea what the IC could be and how I could program it?
LE: Did a bit of searching and looks like it might be LGT8F328P, but not 100% sure yet
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yeah normally atmega family or some stm32 ic's in most of their gimmick
could be atmega family but not the 328 ?? you have to search all the datasheets pinouts ??
some where atmega 48 ??
as you may know mostly dip ic's pinouts
you had one project on the web to improve it / add more functionality
maybe with avrdudess / avr dude and an isp programmer you try to read the mcu id while going into all the mcu library
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@coromonadalix: I am 100% sure it is not an Atmega chip as those have multiple GND and VCC pins and this chip only hase one of each. I did some searching and it might be a Chinese 328P clone, LGT8F328P, but I have yet to confirm it.
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you have the 328b who's not perfectly an 328p ???
yours is a new variant, never saw theses with this mcu type
i have one with an dip 328 ...
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It's not an atmega328pb.
If anyone else is interested, I have fully confirmed it is an LGT8F328P. It even has a 32Mhz oscillator on the PCB. I managed to read the flash using LGTISP (https://github.com/brother-yan/LGTISP) flashed to an Arduino Nano. Next, I will try the custom firmware by @tim.savage