8 Mbit ZBT SRAM for 32-bit bus systems
The Micron MT55L256L32FT-12IT is a 8 Mbit ZBT® synchronous SRAM organized as 256K x 32 bits. The x32 data bus matches a 32-bit MCU or DSP without byte-lane multiplexing, keeping the layout clean. Access time is 9 ns at a 83 MHz clock, which leaves enough bus margin for a single-cycle read-write turnaround on most 32-bit memory controllers. The parallel interface is fixed — no serial or DDR option inside this package. Supply is 3.135 V nominal. The industrial temperature range of -40°C to 85°C covers outdoor telecom cabinets, factory-floor PLCs, and motor-drive control boards where the ambient can swing below freezing. The 100-pin TQFP package is a surface-mount footprint that reflows in a standard lead-free profile.
Active lifecycle — no last-time-buy scramble
The MT55L256L32FT-12IT carries an Active lifecycle status. That means Micron still manufactures it, and there is no announced last-time-buy window. For a BOM line that needs this density and bus width, you are not hunting surplus stock — you can qualify it into a production build with normal lead times. The part is sourced through independent distribution and quoted to order against an RFQ.