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70 ns (indicated by the "-70L" suffix in its equivalent part number). Supply Voltage: Typically 5V (standard for the $\mu$PD43256 series). Current Consumption:
If you are performing a repair on an ECU, keep these factors in mind:
. This means it may not contain the specific program or data required for your vehicle's specific engine mapping. Depending on the exact sub-function of the chip in your ECU (such as if it acts as a memory or programmable driver), you may need to program it or "clone" the data from the original chip if it is still readable. Where to Find the Datasheet
Below is a technical summary of the component, which can serve as a reference paper for its datasheet. 1. Component Identification Manufacturer: NEC Electronics (now part of Renesas Electronics). Part Number: Functional Equivalent: $\mu$PD43256BGU-70L Common Branding:
NEC part numbers generally follow structured formats. does not match common NEC logic families (e.g., µPD for microcontrollers, 2SC/2SA for transistors, or Dxxxx for diodes). It resembles: