внезапно .. GD32VW553KIQ7 160 MHz Flash 2048K SRAM 320K QFN32!!!
WiFi BLE5.2 коротко по процессору, процессор Nuclei N307
3-pipeline stages, using state-of-the-art processor micro-architecture to deliver the best-
of-class performance efficiency and lowest cost.
Machine (M) and User (U) Privilege levels support.
Non-maskable interrupt (NMI) support.
Support dynamic branch predictor.
Configurable instruction prefetch logic, which can prefetch subsequent two instructions to hide the instruction memory access latency.
Support WFI (Wait For Interrupt) and WFE (Wait For Event) scheme to enter sleep mode.
Interrupt priority levels configurable and programmable.
Enhancement of vectored interrupt handling for real-time performance.
Support interrupt preemption with priority.
Support interrupt tail chaining.
Standard 4-wire JTAG debug port and 2-wire cJTAG debug port.
Support interactive debug functionalities.
Support 8 triggers for hardware breakpoint.
RV32I/M/A/F/D/C/P/B instruction extensions support.
Support two-level sleep modes: shallow sleep mode, and deep sleep mode.
Support 64-bits widereal-time counter (can be used as System Tick).
Support Physical Memory Protection (PMP) to protect the memory, 8 entries.
Support Instruction Cache (I-Cache), 2-way associative, cache line size 32 bytes, total 32KB.
Support single / double precision FPU.
Support 2 cycle floating point MAC.
Support packed-SIMD DSP.
обещают сверхбыстрый вход в прерывания - 6 циклов! на 160мгц это всего 31,5 нс!
https://caxapa.ru/upload/files/59ef3aa2d5af/
https://nucleisys.com/product/300.php
коротко по всему мк
даташита
https://caxapa.ru/upload/files/b12994480f80/