Macronix

Macronix is a long-standing maker of non-volatile memory, and the profiles here cover its MX25 serial NOR flash family — the code and firmware store that sits beside MCUs and SoCs in industrial, networking and consumer designs. The listed codes span 128 Mbit and 256 Mbit densities in SOP-8 and SOP-16 packages, running single, dual and quad SPI with QPI and double-transfer-rate modes. The package letters inside an MX25 ordering code are the selection point: the GM2I code is an 8-pin SOP 200 mil part while the GMJ code is a wider SOP-16, and the two footprints are not interchangeable. The -08 suffix on the GM2I code denotes Factory Mode support, not a speed grade, so confirm the package code, density and temperature grade against your board before ordering.

Sourcing notes for Macronix parts. Always quote the complete manufacturer ordering code — package, temperature grade, speed or accuracy grade, and packing (reel, tube or tray) all change availability and price, and suffixes are where most mismatches happen. Check the lifecycle status on the manufacturer site before committing to a multi-year build; parts flagged not-recommended or obsolete need a last-time-buy plan or a verified alternate lined up early. With every offer, request traceability documents — date code, lot code and original packing — and confirm the inspection steps your supplier applies to high-risk lots.