Hardware versions
Not all ZY12PDN boards are born equal. Please help the document the different versions. Edit the page and add additional information.
The original version is likely from YZXStudio and features a STM32F030F4 microcontroller with a Cortex-M0 CPU, 48 MHz clock, 4 KB of RAM and 16 KB of flash in a TSSOP20 package. Close to the USB-C connector, it says "ZY12PDN" and "YZX" in silver.
Later versions have a Chinese XM1008F6P6 microcontroller, which seems to be a 1-to-1 replacement for the STM32 microcontroller. The microcontroller is in a TSSOP20 package as well. The the "ZY12PDN" and "YZX" labels are also present.
The code works without modification.
Some versions seem to have a HK32F030F4 microcontroller, which likely is a 1-to-1 replacement for the STM32 microcontroller. The microcontroller is in a TSSOP20 package as well.
The code hasn't been tested with this board yet. It might require minor modifications.
The ZYPDE board from YZXStudio looks like a successor to the ZY12PDN. It supports additional modes incl. UDB PD 3.0 and 120W. It uses a GigaDevice GD32E230F8V6 microcontroller. It's a more capable microcontroller with a Cortex-M23 CPU, 72 MHz clock, 8 KB of RAM and 64 KB of flash in a small LGA20 package.
This code hasn't been tested with this board yet. It will not work without modification.