) is a specialized automotive memory and driver chip found deep within the Bosch EDC16
Operating the component beyond these thresholds can cause permanent silicon degradation or immediate failure. : -0.5V to +7.0V Input/Output Voltage ( VINcap V sub cap I cap N end-sub VOUTcap V sub cap O cap U cap T end-sub ) : -0.5V to Operating Temperature ( TAcap T sub cap A
By providing this detailed information, designers and engineers can quickly reference the key specifications and characteristics of the NEC B58944, making it easier to design and develop high-performance analog circuits.
The single most common use-case for sourcing the NEC B58944 is the refurbishment of . nec b58944 datasheet
The real "story" for engineers and mechanics is the hunt for the datasheet. Because this chip was custom-manufactured by NEC for Bosch, a standard public datasheet doesn't technically exist in the way it does for a generic transistor. www.bosch-semiconductors.com The Repair Community: For years, ECU repair specialists on forums and sites like
: Found in Bosch EDC15 and EDC16 diesel engine control boards, as well as various gasoline units.
Because this component is a legacy automotive ASIC, direct replacements are rarely found through standard commercial catalog channels. Hardware developers and repair specialists typically source authentic new-old-stock (NOS) inventory or salvage components through vetted global platforms like Jotrin Electronics or Worldway Electronics to guarantee circuit compatibility and reliable thermal tolerances. ) is a specialized automotive memory and driver
: Provides general product details, package information, and stock status.
Older NEC parts sometimes have documentation on Yahoo Auctions Japan or Akizukidenshi. Search for “B58944 NEC データシート” (datasheet in Japanese).
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 The real "story" for engineers and mechanics is
: SOP / SOP-28 (Small Outline Package) or BGU (SOP variation), optimized for compact, vibration-resistant surface mounting on automotive PCBs. Hardware Specifications & Pin Configuration
The NEC B58944 is engineered to withstand the extreme environmental conditions of an engine bay, including high thermal cycles, voltage spikes, and mechanical vibration. Core Architecture and Specifications : NEC (Nippon Electric Company)