TM4256HU8-12L

Dynamic random-access memory (DRAM) single in-line memory module (SIMM) configured as 256K x 9-bit with an 8-bit page mode fast-page design, operating at 120-nanosecond access speeds on an tin-lead leaded layout. Equivalents: No direct cross-brand drop-in part matches due to specific proprietary board manufacturing runs. Real-Life Examples: Early IBM-compatible 286/386 clone computer motherboards, vintage standalone hardware memory expansion boards.