2022-07-29 01:12 AM
2022-07-29 01:16 AM
What "reference design", exactly?
Schematics, gerbers, etc, of devboards are on the 'CAD Resources' tab of the board's Product Page
2022-07-29 01:24 AM
Okay, I will look for it .
2022-07-29 01:29 AM
Also look on the chip's Product Page
2022-07-29 01:35 AM
Data Sheet and Reference Manual should provide guidance/expectations.
The NUCLEO-F401 might be a good example. Device's pin count my impact specific expectations.
Not many requirements to get functional, need VDD/VDDA, VSS/VSSA, BOOT0 pulled low, bulk capacitance at VCAP pin(s), around 4u7 total, typically split as 2x 2u2, one for each pin, as I recall.
Cap to ground on NRST, also typical, to re-tar-d it's rise.
For programming/debug provide header with VCC,GND,SWDIO,SWCLK,SWO,NRST
A debug/programming UART via USART1 PA9/PA10 recommeded.
Jumper for BOOT0 HIGH/LOW also