: Components are still sourced through specialized electronics distributors such as Jotrin Electronics Usage Considerations
chip in automotive electronic control units (ECUs), particularly those manufactured by . It is technically equivalent to the μPD43256BGU-70L part from NEC Electronics. Technical Specifications
While NEC has undergone various corporate evolutions, the B58944 remains available through specialized electronic component distributors such as Jotrin Electronics Worldway Electronics
The NEC B58944 is a specialized automotive ECU (Engine Control Unit) driver chip nec b58944 datasheet 2021
While a full official 2021 PDF datasheet can be difficult to find through standard consumer channels due to its proprietary automotive nature, technical specifications and replacement parts are available through specialized electronics distributors: NEC B58944 ECU DRIVER SOP-28 - Inovauto.com
The NEC B58944 is a critical integrated circuit (IC) primarily utilized in automotive Engine Control Units (ECUs), particularly those manufactured by
When ordering replacement parts from independent component distributors, note that the NEC B58944 is an empty hardware driver chip . It requires no specialized software flashing or EPROM programming on its own; it merely executes the hardware logic driven by the main processor. If you solder a new chip onto the board, it is ready to run immediately. It requires no specialized software flashing or EPROM
NEC semiconductors are now managed by .
| Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | | $V_DSS$ | 60 | V | | Gate-Source Voltage | $V_GSS$ | $\pm 20$ | V | | Drain Current (DC) | $I_D$ | 50 - 80 (variant dependent) | A | | Drain Current (Pulse) | $I_DP$ | Up to 200 | A | | Channel Temperature | $T_ch$ | 150 | $^\circ C$ | | Storage Temperature | $T_stg$ | -55 to 150 | $^\circ C$ |
In automotive computers, the component functions as an intermediary workspace for volatile operation logs. Unlike Flash memory or EEPROM, which retain map data when the ignition is switched off, this high-speed SRAM processes fast-cycling, dynamic variables: | Parameter | Symbol | Value | Unit
The SOP-28 package allows for automated PCB assembly and efficient heat dissipation on the ECU circuit board. 4. Over-Current and Thermal Protection
Values derived from standard operating conditions at $T_a = 25^\circ C$ unless otherwise noted.