# STM32F103CGT6 — documented alternatives

> The closest documented alternative to STM32F103CGT6 is Artery AT32F403ACGT7, graded PIN (package- and pinout-compatible candidate that needs firmware work, high confidence). Key difference to review first: Max clock 240MHz vs 72MHz (review peripheral clock configuration). Every match is an engineering-review candidate, not an unqualified drop-in claim.

Canonical page: https://senneon.com/cross-reference/stm32f103cgt6
Data verified: 2026-07-13 · Grading methodology: https://senneon.com/verification

## Graded candidates

| Candidate | Brand | Grade | Confidence | Known differences | Evidence |
|---|---|---|---|---|---|
| AT32F403ACGT7 | Artery | PIN | high | Max clock 240MHz vs 72MHz (review peripheral clock configuration); Firmware port required: most registers compatible but not all; official migration guide + device pack provided; Operating temperature -40~105°C (T7) wider than ST's -40~85°C (T6) | Artery official migration guides (archived locally): MG0007 SXX32F103→AT32F403A, MG0003 SXX32F103→AT32F413, MG0025 →AT32A403A; each documents peripheral differences (checked 2026-07-13) — https://senneon.com/evidence/artery/mg-7c021cb7.pdf; Pin and density codes follow ST naming convention (checked 2026-07-13) |

## Parametric comparison (manufacturer-sourced)

| Spec | AT32F403ACGT7 |
|---|---|
| Speed (MHz) | 240 |
| SRAM | 96+128 |
| Package | LQFP48 7x7 mm |
| Temp Range | 40°C to +105°C |

Commercial terms are quote-only; no price, stock or lead-time claims are published. RFQ: https://senneon.com/rfq?pn=STM32F103CGT6