Nec B58944 Datasheet 2021 ^new^

: Handling critical operational parameters and temporary data within the vehicle's computer system.

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For hard-to-find or obsolete components, these sources can be a goldmine, but exercise caution.

: Surface Mount Device (SMD) / SOP (Small Outline Package) designed to withstand high vibration.

The is a 256-Kibit Parallel SRAM integrated circuit manufactured by NEC Electronics . It is commonly used as a memory component in various electronic systems. Key Features and Specifications nec b58944 datasheet 2021

Managing the high-side power to injector coils.

I couldn’t find a specific datasheet from 2021 in my current knowledge base or search results.

Controlling transmission solenoids, EVAP purge valves, or throttle bodies.

Volvo XC70 and XC90 (EDC15C11 and EDC16C31 systems). Usage and Availability If you share with third parties, their policies apply

The NEC B58944 functions primarily as a static random-access memory (SRAM) or specialized interface controller tailored for high-reliability automotive environments. It features standard characteristics of the broader NEC D43256 family alongside robust automotive modifications.

Specialized workshops like ECUfix provide replacement chips and firmware files specifically for ECU restoration.

Finding an official datasheet for the NEC B58944 is challenging. The available technical data is pieced together from various sources, some of which may be for the D43256BGU-70Y SRAM, while others are for the B58944 driver IC.

The B58944 serves as a driver chip within the Auto ECU board, managing engine functions. It is a common component in several Bosch ECU models: B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics

Because these are specialized automotive ICs, standard hobbyist datasheets are rare. Engineers often refer to the

Introduction The NEC B58944 designation refers to a surface-mount light-emitting diode (LED) device produced by NEC (now part of Renesas/ROHM family via mergers and acquisitions in the semiconductor industry). The 2021 datasheet consolidates the device’s electrical, optical, mechanical, and reliability specifications for designers integrating this LED into backlighting, indicator, and general illumination applications. This essay summarizes the device characteristics, explains key parameters, discusses typical applications and design considerations, and examines reliability and sourcing notes relevant to engineers in 2021.

256K bit Static RAM (typically organized as 32K x 8-bit).