Nec B58944 Datasheet High Quality (2026)

* VOLVO XC70 2.4 D 185CV EDC16C31 0281012103 1037375898 1037400254 Cks_7D2A. * VOLVO XC90 2.4D 163CV EDC15C11 3067014741 Cks_B157. Inovauto.com B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics

Factory-new replacement parts sourced from electronics suppliers are completely blank chips containing no predefined code .

: The 70 ns access time ensures the ECU can make micro-second adjustments to engine parameters based on sensor input. Микросхема NEC B58944 D43256BGU-70Y nec b58944 datasheet

The is a specialized integrated circuit (IC) predominantly utilized in automotive electronics, specifically within Engine Control Units (ECUs) . Often identified by its cross-reference number D43256BGU-70Y , this component serves as a critical memory or driver interface in systems developed by Bosch and other major manufacturers. Technical Specifications and Package Details

Typically 70ns (indicated by the "-70Y" suffix) Key Applications in Automotive Systems * VOLVO XC70 2

The B58944 features a standard asynchronous SRAM footprint. It separates the address bus, data bus, and control lines to ensure straightforward interfacing with 8-bit, 16-bit, or 32-bit automotive microcontrollers. Pinout Description (Standard 28-Pin SOP) Pin Number Function Type Description A0 – A14 Address Inputs : Selects one of the 32,768 memory locations. 11 - 13, 15 - 19 I/O1 – I/O8 Input/Output

system rail standard in classic Bosch automotive electronics. Key Technical Parameters : The 70 ns access time ensures the

-version) preserves vehicle battery status when the ignition key is turned off. Common Failure Points and ECU Diagnostics

This IC is a "vulnerable" part, meaning it is one of the most common failure points in older or high-mileage vehicle computers. It is frequently found in a wide array of Bosch-manufactured ECUs for brands like , Iveco , and various European models. Specific ECU models that utilize the B58944 include: Bosch ME7.x series (e.g., ME7.4.4, ME7.5, ME7.9.6) Bosch EDC series (e.g., EDC7, EDC16) Repair and Procurement