Renesas Electronics Corporation 64-LQFP R5F21368CNFA#W4

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The part number R5F21368CNFA#W4 refers to a microcontroller unit (MCU) from Renesas Electronics, likely featuring the RL78 Family series. This MCU is suitable for low-power, high-performance embedded applications and typically comes with flash memory, various I/O ports, timers, serial communication interfaces, and on-chip debugging support. The "#W4" suffix may denote specific package type, temperature range, or other product configuration details that are critical for design-in purposes. For exact specifications, consult the manufacturer's datasheet or website.