SPI (Serial Peripheral Interface)

Hardware

low-level chip-to-chip protocol — SPI is used inside ECUs to talk between CPU and flash/EEPROM chips. Useful for bench programming via direct chip access.

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Related terms

ECU (Engine Control Unit)
main engine computer TCM (Transmission Control Module)
transmission control computer DSG (Direct-Shift Gearbox)
VAG dual-clutch automatic transmission Tricore
Infineon microcontroller family used in Bosch ECUs EEPROM
small persistent memory chip TCU (Transmission Control Unit)
transmission control module

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