RP2350

The microcontroller is software-compatible with the RP2040 and can be programmed in assembly, C, C++, Free Pascal, Rust, MicroPython, CircuitPython, and other languages.

The RP2350 comes in four versions, which are identified by the number of cores (2), a numeral loosely correlated to the core type[3] (3), log₂ of the number of 16 KB RAM blocks (5), log₂ of the number of 128 KB flash storage blocks (0 or 4), and a letter denoting package type (A or B):[4] Note: inside the "54" IC packages, a NOR flash die is stacked on top of the microcontroller die, then connected to its QSPI bus and first chip select.

The RP2350 chip was released with errata RP2350-E9, documenting a "Latching behaviour on Bank 0 GPIO pull-down resistors", which was later updated to "Increased leakage current on Bank 0 GPIO when pad input is enabled" due to multiple reports from users,[5] such as developers of the Bus Pirate.

[6] Luke Wren, one of the engineers working on RP2350 has stated that the supplier responsible for the pad circuitry has provided a faulty design.

There was one particular structure on the RP2040 FT pad that limited its tolerance, but on inspection the modified layout we got back was a completely different circuit.