The MX25L25645G is Macronix's 256Mb (32MB) NOR Flash — the same capacity as the Winbond W25Q256JV but from Macronix's MX25L industrial-grade series. At 133MHz QSPI, it delivers ~66 MB/s read throughput, making it suitable for STM32H750 external boot applications where fast firmware loading is critical.
For Betaflight blackbox logging, 32MB stores 5+ hours of flight data at standard 2kHz log rates, enabling full-day test sessions without stopping to download logs. The MX25L series is known for robust industrial temperature tolerance and consistent programming performance.
Macronix MX25L Capacity Guide
| Model | Capacity | Application |
|---|
| MX25L12835F | 16 MB | H7 external boot, 2hr blackbox |
| MX25L25645G | 32 MB | 5hr+ blackbox logging |