
STMicroelectronics
A strong upgrade path within the same STM32G0 family, offering significantly more Flash and RAM.
Finding a replacement for the STM32G030K6T6 involves balancing performance, memory, and pin compatibility. The STM32G070KBT6 offers a direct upgrade path, while other options may require design changes.
Most candidates have compatible voltage ranges, but speed and power consumption vary.
While package is LQFP32, pinout compatibility is only likely for same-family parts like STM32G070KBT6.
Switching core (e.g., to Cortex-M4 or M23) or manufacturer requires a major software rewrite.
Yes, the STM32G070KBT6 is a strong candidate for direct replacement, offering more memory within the same product family. Pinout verification is still recommended.
Upgrade to STM32G070KBT6 for more memory with high compatibility.
The main risk when moving outside the STM32G0 family is incompatible pinouts and core architectures, which would require significant hardware and software redesign.

STMicroelectronics
A strong upgrade path within the same STM32G0 family, offering significantly more Flash and RAM.
| Feature / factor | STM32G030K6T6 | STM32G070KBT6 | STM32C031K6T6 | GD32E230K8T6 | Compatibility / risk |
|---|---|---|---|---|---|
| Program Memory Size | 32 KB | 128 KB | - | 64 KB | 128 KB / 64 KB — 4x more program memory.; GD32E230K8T6: More program memory. |
| Ram Size | 8 KB | 36 KB | 12 KB | - | 36 KB / 12 KB / 4 KB — Over 4x more RAM.; STM32C031K6T6: More RAM than target.; CS32F030K6T6: Half the RAM of the target, major downgrade. |
| Core Processor | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | ARM Cortex-M23 | Arm Cortex-M0+ / ARM Cortex-M23 / ARM Cortex-M0 — Core architecture matches.; STM32C031K6T6: Core architecture matches.; GD32E230K8T6: Different core requires firmware rewrite and toolchain change.; CS32F030K6T6: Slightly different core, M0+ is more power efficient. |
| Speed | 64 MHz | 64 MHz | 48 MHz | 72 MHz | 64 MHz / 48 MHz / 72 MHz / 48MHz — CPU speed matches.; STM32C031K6T6: Slower CPU speed may impact performance.; GD32E230K8T6: Faster speed is generally acceptable.; CS32F030K6T6: Slower CPU speed may not meet application timing requirements. |
| Package | LQFP32 | LQFP32 | LQFP32 | LQFP32 | LQFP32 — Package matches. High likelihood of pin compatibility within the same family.; STM32C031K6T6: Package matches. Pinout compatibility between G0 and C0 series must be verified.; GD32E230K8T6: Package matches, but pinout must be verified.; CS32F030K6T6: Package matches, but pinout must be verified. |
| Voltage - Supply (Vcc/Vdd) | 2.0 V ~ 3.6 V | - | - | 1.8 V ~ 3.6 V | 1.8 V ~ 3.6 V — Wider operating voltage range. |
The STM32G070KBT6 is the best alternative, offering an upgrade path within the same family with more memory and likely pin-compatibility. It provides a straightforward migration with minimal risk.