Nec B58944 Datasheet |verified| -

Possible explanations:

Since no official NEC B58944 datasheet is publicly archived, the following parameters are derived from NEC’s standard hybrid regulator family (e.g., µPC7800 series and µPC2930 series). Use these values only as a reference for testing or substitution:

• Frequently sold as “ECU driver” or “ECU memory” replacement for Bosch engine control units (ME7.x, EDC7/EDC16 families listed by aftermarket sellers).
• Appears commonly in automotive ECU repairs as a socketed or surface-mounted SRAM used to store runtime data, maps, or as a buffer in older ECUs. Some listings indicate “empty chip — no program/data” (sold as replacement hardware).

CRT Monitor Horizontal Deflection Circuit

– Many NEC monitors (e.g., Multisync series) used 7-pin SIP ICs for H-out or V-out pre-drivers. The B58944 could be a replacement for defective vertical output ICs like LA7830 or TDA1170. nec b58944 datasheet

The B58944 is a highly integrated SiP. Unlike a simple Bluetooth chip, the module includes: Frequently sold as “ECU driver” or “ECU memory”

Common Command Structure:

The module communicates using standard HCI packets: CRT Monitor Horizontal Deflection Circuit – Many NEC

• DatasheetArchive.com
• Alldatasheet.com
• Renesas.com (NEC's successor)

Most NEC semiconductor datasheets follow a standard layout. Here's what to look for: