ST/NXP MCU Replacement Plan
STM32F103 series / ATmega328P → GigaDevice GD32F103, Geehy APM32F103 — pin-to-pin verified, 6–9:1 price gap (quote for latest pricing), domestic lead 4–8 weeks.
Application Scenario
For main-controller designs using STM32F1 series or ATmega328P (industrial, consumer, medical, automotive aftermarket). ST MCU lead 20–30 weeks; GD32F103 verified as pin-to-pin replacement for STM32F103 (Cortex-M3 compatible).
System Diagram Placeholder
Placeholder: power → MCU (GigaDevice GD32F103 / Geehy APM32F103, pin-to-pin) → peripherals → load. Firmware recompile required; minor register-level adaptation. Full schematic in preparation — contact us.
Replacement Matrix
| Original | Replacement | Quote | Savings |
|---|---|---|---|
| STM32F103C8T6 (ST) | GD32F103C8T6 (GigaDevice) | Quote (ample stock) | ~ -75~80% |
| STM32F103C8T6 (ST) | APM32F103C8T6 (Geehy) | Quote | ~ -75~80% |
| STM32F103RBT6 (ST) | GD32F103RBT6 (GigaDevice) | Quote | ~ -75~80% |
| STM32F407VET6 (ST) | GD32F407VET6 (GigaDevice) | Quote | ~ -70~78% |
| STM32G030F6P6 (ST) | GD32E230F6P6 (GigaDevice) | Quote | ~ -65~75% |
| ATmega328P-PU (Microchip) | APM32F103T8U6 (Geehy) | Quote | ~ -70~80% |
Core Components
- GigaDevice GD32F103C8T6 — Cortex-M3, 64KB Flash, LQFP-48, direct STM32F103C8T6 replacement
- GigaDevice GD32F407VET6 — Cortex-M4 high-end replacement
- Geehy APM32F103C8T6 — Cortex-M3, LQFP-48, P2P STM32F103 replacement
- GigaDevice GD32E230F6P6 — Cortex-M23, TSSOP-20, STM32G030 replacement
BOM Notes
- GD32F103 fully replaces STM32F103 (Cortex-M3 compatible, verified)
- Firmware recompile needed (GD32 Keil pack); minor register-level adaptation
- GigaDevice lead 4–8 weeks stable; GD32 for cost, AT32 (with adaptation) for performance
Conclusion & Recommendation
STM32F103C8T6→GD32F103C8T6 is the P0 verified switch (pin-to-pin, 6–9:1 gap); STM32F407VET6→GD32F407VET6 offers high-end value. Validate during firmware adaptation window and switch by product line.
📌 Source: Compiled from official sites and public channels (2026-08-24): GigaDevice/Geehy product pages, st.com, LCSC stock, public pricing.