Nec B58944 Datasheet

If the B58944 is unavailable, technicians typically look for: NEC $\mu$PD43256BGU-70L (Direct equivalent).

The µPB58944 (often styled NEC B58944) is a legacy integrated circuit from NEC (now Renesas) family — a silicon BJT or analog/drivers family part (datasheets and exact part designation vary across sources). Below I assume you mean the common vintage NEC part designated B58944 (power/driver IC). If you meant a different exact part number, say so and I'll adapt.

[Isolate & Clean Board] -> [Apply Liquid Flux] -> [Hot Air Desolder (350°C)] | [Install New Blank IC] <- [Solder Wick Cleanup] <- [Remove Faulty Component]

The chip functions as an automotive engine drive or memory-related component within the ECU. It is a critical part of the circuit board responsible for managing engine computer operations. nec b58944 datasheet

Data from non-specialist sources like Utsource and Spanish Alibaba inaccurately describe the B58944 as an Infineon low-dropout (LDO) voltage regulator with a 28-pin SOP package or a dual-channel high-side solid-state relay . These claims are not confirmed by official datasheets or major distributor listings and are not cited in specialized ECU repair contexts.

: Detailed technical parameters and pinouts can be found on platforms such as Elparts or AllDatasheet under its commercial equivalent, μPD43256BGU. B58944 - datasheet, pdf, info, parameters, stock - Elparts

: The bi-directional bus lines that transmit sensor configurations, injector timings, and diagnostic trouble codes (DTCs). If the B58944 is unavailable, technicians typically look

When sourcing a replacement, technicians often look for parts that match the exact timing and voltage requirements. The following parts are considered direct or highly compatible equivalents: μPD43256BGU-70Y Bosch B58944 (Internal Bosch branding) Sourcing and Replacement Tips

. This means it may not contain the specific program or data required for your vehicle's specific engine mapping. Depending on the exact sub-function of the chip in your ECU (such as if it acts as a memory or programmable driver), you may need to program it or "clone" the data from the original chip if it is still readable. Where to Find the Datasheet

The is a high-density semiconductor component, frequently identified by its equivalent part number, μPD43256BGU-70L . In technical terms, it is a Static Random Access Memory (SRAM) chip organized with a capacity of 256 Kilobits (32K x 8 bits) . If you meant a different exact part number,

: After replacement and programming, reinstall the ECU in the vehicle and use a professional diagnostic scanner to check for fault codes and perform any necessary system calibrations (e.g., throttle body alignment, injector coding).

The NEC B58944 is more than just a part number; it is a vital link in the chain of automotive reliability. As a 256K SRAM chip housed in a compact SOP-28 package, it provides the low-latency memory environment necessary for modern engines to run efficiently. For engineers and technicians, identifying its relationship to the series is the key to sourcing the correct datasheet and ensuring successful hardware diagnostics. NEC B58944 ECU DRIVER SOP-28 - Inovauto.com NEC B58944 ECU DRIVER SOP-28. Inovauto.com NEC B58944 D43256BGU-70Y BOSCH Auto ECU computer IC

) is a specialized automotive memory and driver chip found deep within the Bosch EDC16

The NEC B58944 operates as a multi-channel driver or specialized application-specific integrated circuit (ASIC). While standard commercial components carry generic alphanumeric naming conventions, parts prefixed with proprietary designations like "B58944" are typically customized for tier-1 automotive suppliers. Characteristic Value / Standard Target NEC Electronics (Renesas) Package Type SOP-28 (Small Outline Package, 28-Lead) Primary Application