Part: B58944 • SO-28 • datasheet, pdf, info ... - Elparts
The (often cross-referenced as the $\mu$PD43256BGU-70L or D43256BGU-70Y ) is a specialized Static RAM (SRAM) integrated circuit primarily utilized as an ECU driver or memory chip within automotive engine control units.
: Shortened industry designation for the same 256k SRAM family. nec b58944 datasheet 2021
Typically 70ns (indicated by the "-70" suffix in equivalent part numbers like D43256BGU-70Y). Primary Manufacturer: NEC Electronics . Automotive Applications
: Handling critical operational parameters and temporary data within the vehicle's computer system. Part: B58944 • SO-28 • datasheet, pdf, info
Based on technical data available for its equivalent parts and automotive application listings: Parallel Static RAM (SRAM). Memory Size: 256 Kib (32K x 8 bits). Package Type: SOP-28 (Small Outline Package with 28 pins).
Try visiting the NEC (or its successor, Renesas Electronics) website. They often have archives of datasheets for their products. Typically 70ns (indicated by the "-70" suffix in
Integrated circuits > Memories > SRAM > Parallel. eq. μPD43256BGU-70L. NEC Electronics. SO-28. Size = 256 Kib. B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics