: In automotive contexts, it may also be referred to by its Bosch-specific internal marking or as a "drive chip" for the ECU. B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics
Given the difficulty finding it online, try these methods: nec b58944 datasheet
The B58944 is a highly integrated SiP. Unlike a simple Bluetooth chip, the module includes: : In automotive contexts, it may also be
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 Because this chip was custom-manufactured by NEC for
Given that standard datasheet aggregators (Datasheet4U, Alldatasheet, DatasheetArchive) may not list B58944, try these specialized methods:
Tell me whether you have a scanned PDF or a photo of the part marking, or confirm the exact package and full part code. I can then locate the precise datasheet numbers (pinout tables, absolute max values, detailed electrical characteristics) and produce a component-specific summary, BOM notes, and recommended schematic snippets.
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).