This discrepancy is likely explained by how these components are labeled and sold. The part number is often found in association with the NEC B58944, and this is indeed a 32K x 8-bit CMOS Static RAM manufactured by NEC (later Renesas). An SRAM chip is a volatile memory component that temporarily holds data the ECU needs for rapid calculations.
| Supplier | Quantity | Price / Notes | |----------|----------|----------------| | (Shenzhen, China) | 8790 pcs (09+) | NEC, SOP‑28, 22+ stock | | ic‑components.tw (Hong Kong) | 932 pcs | NEC, SOP‑28, “new & original” | | Ecufix.ru (Russia) | On‑request | “NEC B58944 D43256BGU-70Y”, repair services offered | | Buy360.com.tw (Taiwan) | Stock listed | ~116 NTD (~US$3.70) each | nec b58944 datasheet 2021
: It is noted in technical circles as a "easily damaged part" on ECU circuit boards, often requiring replacement when an engine fails to start or displays persistent computer errors. Modern Context (2021 and Beyond) This discrepancy is likely explained by how these