Renesas R5F104MFAFA#V0

Overview

R5F104MFAFA#V0 from Renesas is a 80-pin LQFP-0.65mm, 32-bit RL78/G14 microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, operating at 32 MHz (44 DMIPS), supporting ultra-low-power modes (0.60 μA RTC+LVD), 10-bit ADC (16 channels), UART/SPI/I²C interfaces, and real-time clock - deployed in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F104MFAFA#V0 datasheet, R5F104MFAFA#V0 pinout, R5F104MFAFA#V0 application, or R5F104MFAFA#V0 equivalent, key selection criteria include its 80-pin LQFP package, -40°C to +85°C industrial temperature grade (D-grade), integrated DTC/ELC peripherals for deterministic low-latency event handling, and support for background data flash rewriting.

Technical Context

The R5F104MFAFA#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, enabling instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes triggered by 19–26 event sources via the Event Link Controller (ELC).

Its mixed-signal subsystem includes an 8/10-bit ADC with internal 1.45 V reference and temperature sensor, dual 8-bit DAC outputs (0–VDD range), two comparators with window/high-speed/low-speed modes, and a calendar-equipped real-time clock with alarm and correction functions - all operating within 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (14 × 14 mm, 0.65 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F104MFAFA#V0, R5F104MGAFB#V0 delivers extended thermal reliability at higher cost, while R5F104MHAFA#V0 provides scalable memory headroom - both retain identical peripheral configuration, ELC/DTC behavior, and low-power profile.

Availability

R5F104MFAFA#V0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F104MFAFA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power performance (66 μA/MHz, 0.60 μA STOP) with rich analog/mixed-signal integration for cost-sensitive industrial control and sensing applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104MFAFA#V0?

The R5F104MFAFA#V0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This is achieved using the high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and -40°C to +85°C. The RL78 core's 3-stage pipeline and optimized instruction set enable this efficiency without external clock components.

Does the R5F104MFAFA#V0 support background data flash rewriting while executing application code?

Yes, the R5F104MFAFA#V0 supports Background Operation (BGO) for data flash. Instructions can execute from program memory during data flash erase/write cycles, enabling seamless firmware parameter updates or logging without halting real-time tasks - critical for uninterrupted operation in industrial controllers.

What are the analog capabilities of the R5F104MFAFA#V0, particularly regarding ADC and DAC?

The R5F104MFAFA#V0 integrates a 10-bit ADC with 16 input channels, internal 1.45 V reference, and on-die temperature sensor. It also features two 8-bit DACs with 0–VDD output range and real-time update capability - enabling closed-loop analog control, sensor biasing, and waveform generation without external converters.

How does the Event Link Controller (ELC) enhance deterministic response in the R5F104MFAFA#V0?

The ELC in the R5F104MFAFA#V0 eliminates software latency by directly linking 19–26 peripheral events (e.g., timer overflow, UART receive) to target functions (e.g., ADC start, DMA trigger). This hardware routing ensures sub-microsecond response - essential for time-critical industrial I/O and motor control loops.

What package and temperature grade does the R5F104MFAFA#V0 carry, and how is it indicated in the part number?

The R5F104MFAFA#V0 uses an 80-pin LQFP package with 0.65 mm pitch (denoted by "FA" in the suffix) and is rated for industrial temperature range (-40°C to +85°C), indicated by the "D" field in the full ordering code (R5F104MFDAFA#V0). The "#V0" denotes tray packaging per JEDEC standard.