# STM32F031C6T6 — documented alternatives

> The closest documented alternative to STM32F031C6T6 is HK HK32F031C6T6, graded PIN (package- and pinout-compatible candidate that needs firmware work, medium confidence). Key difference to review first: HK claims hardware+software compatibility; sample-test ADC, clock and low-power behavior. 1 further graded candidate below. Every match is an engineering-review candidate, not an unqualified drop-in claim.

Canonical page: https://senneon.com/cross-reference/stm32f031c6t6
Data verified: 2026-07-13 · Grading methodology: https://senneon.com/verification

## Graded candidates

| Candidate | Brand | Grade | Confidence | Known differences | Evidence |
|---|---|---|---|---|---|
| HK32F031C6T6 | HK | PIN | medium | HK claims hardware+software compatibility; sample-test ADC, clock and low-power behavior; "A" suffix is HK's revision, same pinout as the non-suffixed part | HK positions HK32F0xx/F103 as same-part-number STM32 replacements; grade upgrades to P2P once the official compatibility document is archived (checked 2026-07-13); Part-number suffix matches ST exactly (checked 2026-07-13) |
| HK32F031C6T6A | HK | PIN | medium | HK claims hardware+software compatibility; sample-test ADC, clock and low-power behavior; "A" suffix is HK's revision, same pinout as the non-suffixed part | HK positions HK32F0xx/F103 as same-part-number STM32 replacements; grade upgrades to P2P once the official compatibility document is archived (checked 2026-07-13); Part-number suffix matches ST exactly (checked 2026-07-13) |

## Parametric comparison (manufacturer-sourced)

| Spec | HK32F031C6T6 | HK32F031C6T6A |
|---|---|---|
| Core | Cortex-M0 | Cortex-M0 |
| Speed (MHz) | 72 | 96 |
| Flash | 32 | 32 |
| SRAM | 10 | 10 |
| Package | LQFP48 (7*7) | LQFP48 (7*7) |

Commercial terms are quote-only; no price, stock or lead-time claims are published. RFQ: https://senneon.com/rfq?pn=STM32F031C6T6