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32-bit Microcontrollers

STM32F103 (e.g. STM32F103C8T6) GD32F103

Cross-reference / replacement · STMicroelectronics → GigaDevice

Original part
STM32F103 (e.g. STM32F103C8T6)
STMicroelectronics
JLink replacement
GD32F103
Pin-compatible drop-in
Core:
Arm Cortex-M3
Max Frequency:
108 MHz
Flash:
16KB ~ 1MB
SRAM:
up to 96KB

Compatibility & sourcing notes

Same LQFP footprint and largely register-compatible — a common second source when STM32F103 is short. Core runs to 108MHz (vs 72MHz), so recheck clock, Flash wait-states, and some HAL settings when porting.

The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.

Frequently asked questions

Can GD32F103 replace the STM32F103 (e.g. STM32F103C8T6)?

Same LQFP footprint and largely register-compatible — a common second source when STM32F103 is short. Core runs to 108MHz (vs 72MHz), so recheck clock, Flash wait-states, and some HAL settings when porting.

What should I check when replacing the STM32F103 (e.g. STM32F103C8T6)?

The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.

Is the GD32F103 in stock, and can I get a quote?

JLink Technology is an authorized distributor and supplies GD32F103 with stock, pricing, and lead time. Click "Request a Quote" with your quantity and we reply within one business day.

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