Renesas R5F21357MNFP#V0

Overview

R5F21357MNFP#V0 from Renesas is a 16-bit R8C CPU core MCU with 48 KB flash program ROM, 4 KB data flash (BGO-enabled), and 4 KB RAM, operating at up to 20 MHz (2.7–5.5 V) or 5 MHz (1.8–5.5 V). It integrates UART0/1/2, I²C, LIN, 12-channel 10-bit ADC, dual 8-bit DAC, four 8-/16-bit timers (including PWM-capable Timer RD), and voltage detection - deployed in consumer audio and office equipment control systems.

For engineers reviewing the R5F21357MNFP#V0 datasheet, R5F21357MNFP#V0 pinout, R5F21357MNFP#V0 application, or R5F21357MNFP#V0 equivalent, key selection criteria include its 52-pin LQFP package, -20°C to +85°C temperature grade (N version), background operation data flash, and hardware LIN support via Timer RA + UART0.

Technical Context

The R5F21357MNFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte (00000h–FFFFFh), with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash blocks A–D mapped to 03000h–03FFFh.

It supports four clock sources: XIN (up to 20 MHz), XCIN (32 kHz), high-speed on-chip oscillator (frequency-adjustable), and low-speed on-chip oscillator. Power modes include standard, wait (3.5 µA @ 3.0 V), and stop (2.0 µA @ 3.0 V), with oscillation stop detection and voltage monitoring (VDD/VDET0/VDET1).

Key Specifications

Pinout & Package

Package: 52-pin LQFP (PLQP0052JA-A), 10 mm × 10 mm, 0.65 mm pitch, N-version (-20°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit MCU applications.

Compared with R5F21357MDFP, the R5F21357MNFP#V0 trades industrial temperature range for lower cost and standard qualification; compared with R5F21356MNFP, it provides 16 KB additional program ROM and 1.5 KB more RAM for enhanced feature sets or future firmware expansion.

Availability

R5F21357MNFP#V0 is available at Aetrix Electronics and suitable for audio equipment control, office equipment motor drive, consumer appliance UI, and industrial sensor hub applications requiring stable component supply and long-term production continuity.

Supply support for R5F21357MNFP#V0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R8C/35M Group, including R5F21357MNFP#V0, was designed for cost-sensitive, low-power embedded control in consumer electronics - emphasizing integration of analog peripherals, motor control timers, and communication interfaces in compact LQFP packages.

FAQ

What is the maximum operating frequency of the R5F21357MNFP#V0 and under what voltage conditions?

The R5F21357MNFP#V0 operates at up to 20 MHz when supplied with 2.7–5.5 V, and at up to 5 MHz when supplied with 1.8–5.5 V. These ratings are specified in the official Renesas datasheet R01DS0021EJ0100 and reflect guaranteed timing margins across the full voltage and temperature range of the N-version device.

Does the R5F21357MNFP#V0 support background operation (BGO) for data flash writes?

Yes, the R5F21357MNFP#V0 supports background operation (BGO) for its 4 KB data flash (1 KB × 4 blocks). This allows the CPU to execute application code concurrently while data flash programming or erasure occurs - critical for logging runtime parameters without interrupting real-time control loops.

What peripheral modules enable hardware LIN bus communication on the R5F21357MNFP#V0?

The R5F21357MNFP#V0 implements hardware LIN 2.0 functionality using Timer RA for baud rate generation and UART0 for serial framing. This integrated LIN module eliminates the need for an external LIN transceiver in body electronics and appliance control applications.

How many analog input channels does the R5F21357MNFP#V0 ADC support, and what is its resolution?

The R5F21357MNFP#V0 features a 10-bit resolution successive-approximation ADC with 12 analog input channels (AN0–AN11). It includes sample-and-hold capability, sweep mode for automatic channel sequencing, and external trigger input (ADTRG) for synchronized sampling.

What is the package type and pin count of the R5F21357MNFP#V0, and is it RoHS compliant?

The R5F21357MNFP#V0 uses a 52-pin LQFP package (PLQP0052JA-A) with 10 mm × 10 mm body and 0.65 mm pitch. Per Renesas documentation, this package variant is RoHS compliant and lead-free, meeting JEDEC standard J-STD-020 moisture sensitivity level 3.