Nec B58944 Datasheet Portable · Free

Connected to the load; the metal tab is also internally connected to the drain for cooling.

The correct replacement is the SRAM, often sold with its Bosch markings D43256BGU-70Y . Reliable sources include: nec b58944 datasheet

The is a specialized, highly durable integrated circuit (IC) predominantly utilized in automotive Engine Control Units (ECUs) developed by Bosch and other major manufacturers. It serves as a vital parallel Static Random-Access Memory ( SRAM ) chip with a total capacity of 256 Kibibits (Kib) , cross-referencing directly to the industry-standard μPD43256BGU-70L (or -70Y) part number. This chip acts as a fast, volatile data buffer for real-time engine diagnostics, fuel injection mapping, and sensor telemetry within high-demand automotive processing systems. Core Specifications and Functional Overview Connected to the load; the metal tab is

+---\/---+ VCC 1| |28 GND I/O0 2| |27 A14 I/O1 3| |26 A13 I/O2 4| NEC |25 A12 A0 5| B58944 |24 A11 A1 6| |23 A10 A2 7| |22 A9 A3 8| |21 A8 A4 9| |20 A7 A5 10| |19 A6 I/O3 11| |18 I/O7 I/O4 12| |17 I/O6 I/O5 13| |16 I/O5 /WE 14| |15 /OE +--------+ It serves as a vital parallel Static Random-Access

: Automotive Module Controller / Engine Drive IC. Pin Configuration and Package Footprint (SOP-28)

The device integrated into the B58944 is a high-performance with technical specifications that highlight its role in real-time data processing.