128 Mbit NOR Flash with Quad I/O — what it is and where it fits
The Micron MT25QL128ABA1EW9-0SIT is a 128 Mbit serial NOR Flash memory using the SPI - Quad I/O interface, clocked at 133 MHz. It stores firmware in a non-volatile array organized as 16M x 8 bits.
133 MHz clock — what it means for read throughput
The 133 MHz clock rate on the Quad I/O interface delivers a sustained read bandwidth that keeps a Cortex-M7 or mid-range FPGA fed during shadowing. Standard SPI at the same clock would deliver one-quarter the throughput because Quad I/O transfers four bits per cycle. If your design currently runs a dual-I/O NOR at 133 MHz, this part doubles the read rate without changing the PCB footprint — the pinout is the same 8-pin WDFN.
Active production, no obsolescence concern
This part carries an Active lifecycle status. No end-of-life notice or last-time-buy window exists. For BOM planning, the MT25QL128ABA1EW9-0SIT is a current-production line item with no imminent supply discontinuity. The ROHS3 compliance means it ships without restricted substances under current EU exemptions.
Temperature grade and environment
Rated for -40°C to 85°C ambient operating temperature. That covers industrial control cabinets and outdoor telecom shelters.