Nec B58944 — Datasheet
When replacing this IC, it is critical to note that the is typically an "empty" chip; it does not come pre-programmed with vehicle-specific data. Its role is to provide the workspace (SRAM) for the processor to execute tasks. If you are sourcing this for a repair, ensuring the speed grade (indicated by the "-70" suffix, meaning 70ns access time) matches the original is vital for timing stability. Where to Buy
The B58944 is often cited as a "damaged-prone" part in automotive circuit boards. When replacing it, technicians should note:
NEC (now Renesas Electronics) typically marks small components with short, non-datasheet codes. "B58944" is likely one of these:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. B58944 NEC Integrated Circuits (ICs) - Jotrin Electronics nec b58944 datasheet
: Logs adaptive shift patterns and operational error codes. Why the B58944 Fails
When choosing a substitute, ensure it supports the wide temperature profiles required for automotive applications to avoid premature component degradation.
According to industry databases and technical listings, the B58944 is equivalent to the . Type : CMOS Static RAM (SRAM). Capacity : 256 Kilobits (32K x 8 bits). Package : SOP-28 (Small Outline Package with 28 pins). When replacing this IC, it is critical to
Q: What is the on-resistance of the NEC B58944? A: The typical on-resistance (RDS(on)) of the NEC B58944 is 0.18Ω @ VGS = 10V.
If you are looking to purchase the B58944 for your next repair or project, you can find it at several reputable distributors:
The B58944 is housed in a standard surface-mount package tailored for high-vibration and space-constrained environments: Where to Buy The B58944 is often cited
(The exact unbranded native component) Alliance Memory AS6C62256-70SIN Cypress Semiconductor CY62256NLL-70SNXI
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