Nec B58944 Datasheet Free [2021] Page

NEC B58944

The (often cross-referenced as D43256BGU-70Y ) is a specialized integrated circuit primarily used as an Engine Control Unit (ECU) memory or driver chip in Bosch automotive systems.

Remember: The B58944 might be on a board. ElektroTanya is a free repository of repair manuals. Search for the device name (e.g., "NEC TV Model XYZ") rather than the chip. The schematic inside will show the B58944 pinout. nec b58944 datasheet Free

NEC B58944

Based on internal structure and common search patterns, the is most likely one of two things: NEC B58944 The (often cross-referenced as D43256BGU-70Y )

Low Standby Current:

. In the context of vehicle repair, it is frequently replaced when an ECU suffers from memory-related failures or physical damage to the circuit board. 256 Kib (32,768 words × 8 bits). Access Time: 70 ns (indicated by the "-70" suffix). Package Type: 28-pin PLASTIC SOP (Small Outline Package) or SO-28. Operating Voltage: Typically 2.7V to 5.5V for the "B" version. Key Feature: Low Standby Current:

Links to buy (authorized distributors), manufacturer page, and verified datasheet sources

Absolute Maximum Ratings: The voltage and current limits. Exceed these, and the component fries.
Pin Configuration: Which pin is ground, power, input, or output.
Thermal Data: How hot the part runs and whether it needs a heatsink.
Typical Application Circuit: How NEC intended the chip to be used.

Iveco:

Various diesel models utilizing the EDC16 engine computer. Honda: Specific ME7 series Bosch ECUs.