![]() By, we can see that the manufacturer recommended to connect a 0.47uF capacitor between RSTI (pin 2) and VCC for improved stability. I don't know why the designer even used a regulator, if it didn't provide a switch to choose 3.3V or 5V levels and supply. ![]() And this seems to be the only function of the 3.3V regulator (besides the 3.3V pin on the SPI connector). The problem is that any memory you fit in the socket will be powered from 3.3V. The chip is powered from 5V, so its I/O ports will also use 5V. CH341A Mini Programmer PCB (WAVGAT) Now, let's return to the schematic and analyze it a bit. Their offered a the PCB design of the device (only top side, however). Further searching lead me to (on AliExpress). So, I analyzed the PCB and came up with the following schematic. But a closer look at the PCB revealed that my programmer does not follow it exactly. If you search, you will find, apparently for this programmer. As you can see, the device also comes with a SMD adapter and some pinheaders for it. A quick look at the board reveals the main electronic parts used: CH341A, a 12 MHz crystal required by the chip, a 3.3V regulator, two 7 pin headers and the ZIF ( zero insertion force) socket. But, first of all, let's have a look at the hardware. ![]() Also, some source codes are available from manufacturer. Instalasi software aplikasi PICkit3 PIC kit3 PICkit 3 emulator download programmer.ĭrivers are available from manufacturer's website (but the site is written in Chinese).
0 Comments
Leave a Reply. |