R5F21257SNFP#X6

R5F21257SNFP#X6 is a Renesas RL78 family 16‑bit microcontroller (R5F2… series). It uses the RL78 core for low‑power, high‑efficiency operation and typically includes program flash, RAM, and peripherals such as multiple timers, ADC (12‑bit), analog comparators, PWM outputs, and serial interfaces (SCI/UART, I2C, SPI), plus a watchdog. It supports a range of supply voltages (about 1.6–5.5 V) and clock options (internal oscillator and external crystal). The SNFP suffix denotes a specific package/temperature grade; exact memory sizes and pin count depend on the variant. For precise specs and pinout, consult the official datasheet for R5F21257SNFP#X6. Development is usually done with Renesas e2 studio or similar tools. Typical applications: embedded control, sensors, home appliances, and power-management.

Pin count depends on the package variant. The exact R5F21257SNFP#X6 code refers to a Renesas R5F-series microcontroller and is offered in multiple packages; you need the specific package (e.g., LQFP/QFP variant) to know the pin count.
Function: It is a 16-bit Renesas MCU (R5F family) with on-chip flash and RAM, plus standard peripherals such as timers, ADC, and serial interfaces (SCI, I2C/SPI) for embedded control.
For an exact pin count and package details, please consult the official Renesas datasheet/product page for the SNFP X6 variant.

- Manufacturer: Renesas Electronics Corporation (Renesas)
- Company type: Japanese semiconductor company that designs and manufactures microcontrollers, microprocessors, SoCs, and other ICs for automotive, industrial, and consumer applications.

R5F21257SNFP#X6 is a Renesas 16‑bit RL78‑family MCU designed for low‑power embedded control. Common application areas include:
- Home appliances and white goods (washing machines, dishwashers, refrigerators)
- Small motor control (fans, pumps)
- Consumer electronics and peripherals
- Industrial automation and sensors
- Building automation and HVAC
- Energy management, metering and smart sensors
- IoT endpoints and data acquisition
These domains benefit from its low power, compact footprint and cost‑effective performance.

LQFP (Plastic Quad Flat Package), 64-pin.