Nec B58944 Datasheet 2021 !link! Site

The B58944 is typically found in high-performance automotive environments. Based on its association with the series, key parameters include: Memory Configuration: 32,768 words 8 bits (if functioning as the SRAM component).

: 70 nanoseconds ( -70Y suffix indicates speed grading and temperature profiling).

The NEC B58944 is a highly reliable and efficient electronic component that is widely used in various applications across industries. Its low on-resistance, high current capability, and excellent thermal performance make it an attractive choice for designers and engineers. The NEC B58944 datasheet 2021 provides detailed information on the component's technical specifications, features, and applications, making it an essential resource for anyone working with this component.

The device contains 6+2+2+4 DMOS low-side switches.

In automotive electronics, engine control units require real-time, zero-latency processing data to manage fuel injection timing, air-to-fuel ratios, turbocharger pressure, and emissions systems. The B58944 serves as an intermediate buffer or configuration data handler for the primary microprocessor. nec b58944 datasheet 2021

As electronic restoration gains popularity (vintage audio, retro computing, arcade machines), the demand for oddball parts like the NEC B58944 remains steady. Understanding its undocumented legacy is the key to successful troubleshooting.

Routes switched currents directly to external solenoids, injectors, or relays. High-current capacity with integrated flyback protection. Ties into the main PCB copper plane.

If you are currently troubleshooting a specific vehicle control module or looking to procure this IC, please let me know:

: Align the new chip, matching the Pin 1 orientation dot exactly with the board markings, and solder using either drag soldering techniques or a fine-tip iron. Summary Table: Quick Reference Specification Details Manufacturer NEC (Automotive Division / Legacy Architecture) Primary Part Variant B58944 / D43256BGU-70Y Commonly Found In Bosch EDC16 Engine Computer Boards Package Style Primary Failure Cause Thermal stress, voltage spikes, overcurrent Programming Requirement None (Operates as dynamic system memory structure) The B58944 is typically found in high-performance automotive

: OBD-II diagnostic scanners return a "No Communication with ECU" error, even though power and ground to the module are verified.

Because the original B58944 is obsolete, here are proven substitutes from 2021 repair logs:

Scorching or structural degradation visible on the SOP-28 package casing. Repair Procedures

: Found extensively across Honda and various European gasoline injection platforms ( ME7.4.4 , ME7.5 , ME7.9.6 ). The NEC B58944 is a highly reliable and

Though dependent on specific implementations, ICs in this class (such as those described in) are designed with protection mechanisms, including over-temperature protection, short-circuit detection, and reverse-polarity protection. Troubleshooting and Replacing the B58944

The NEC B58944 functions as high-speed memory, enabling real-time data processing for engine driving chips in vehicles. Detailed technical parameters include: 256 Kib Parallel Static RAM (SRAM). Package Type: SOP-28 (Small Outline Package with 28 pins).

As Alex scrolled through the B58944 Product Details , the technical parameters told a story of a different era: