Western part number in.
Graded alternatives out.
When ST, TI or Infineon parts are out of stock, price-hiked or EOL — alternatives from 3PEAK, Artery, GigaDevice, HK and SGMicro, graded P2P · PIN · FUNC · REF. Differences disclosed. Evidence cited.
Cross-reference: STM32F103RCT6 — ST · Cortex-M3 · 72 MHz · 256KB flash · 48KB SRAM · LQFP64
Open full table →Drop-in candidate. Official compatibility document or second-source datasheet required. Residual differences still listed — always.
Same package and pinout — the board stays. Firmware porting needed; the cited migration guide documents every change.
Functional equivalent — board or BOM change required. Verify against the datasheet before committing a design.
Closest parametric match only. A qualified starting point for your own evaluation — never sold as a drop-in.
Evidence, or it isn't a match.
Five classes of citable official documents — 544 on file. Every grade links to its source.