Renesas R5F104MFAFB#V0

Overview

R5F104MFAFB#V0 from Renesas is an RL78/G14 8-bit microcontroller with 256 KB flash, 24 KB RAM, and 80-pin LFQFP-0.5 mm package, operating from 1.6–5.5 V at -40 to +105°C (industrial G-grade). It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates UART, I²C, SPI, 12-bit ADC (20 ch), RTC, and hardware DTC/ELC for sensor and control applications in industrial automation.

For engineers reviewing the R5F104MFAFB#V0 datasheet, R5F104MFAFB#V0 pinout, R5F104MFAFB#V0 application, or R5F104MFAFB#V0 equivalent, key selection criteria include its G-grade temperature rating, 80-pin LFQFP footprint, integrated data flash (8 KB), real-time clock with calendar, and support for background data flash rewriting - critical for firmware-over-the-air and field-upgradable embedded systems.

Technical Context

The R5F104MFAFB#V0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). Its power management includes HALT, STOP, and SNOOZE modes, plus on-chip LVD with 14 selectable voltage detection levels and POR circuitry.

Peripheral integration includes Event Link Controller (ELC) enabling direct hardware-triggered peripheral chaining (e.g., ADC conversion → DMA transfer → interrupt), Data Transfer Controller (DTC) with block/repeat/chain transfer modes, and dual-clock domain operation (main/subsystem clocks) for independent RTC and low-power subsystem control.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP, 12 × 12 mm, 0.5 mm pitch (Renesas code PLQP0080KE-A). Exposed pad recommended for thermal dissipation and grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104MGAFB#V0 and R5F104MHAFB#V0, the R5F104MFAFB#V0 offers optimal balance of flash capacity (256 KB), data flash (8 KB), and industrial temperature range (-40 to +105°C), making it ideal for field-deployed controllers needing firmware update capability and long-term reliability without over-provisioning memory.

Availability

R5F104MFAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R5F104MFAFB#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, and power management solutions for automotive, industrial, and IoT markets.

The RL78/G14 family is designed for ultra-low-power general-purpose industrial control, integrating rich analog peripherals, robust communication interfaces, and advanced power management to replace legacy 8-bit MCUs in cost-sensitive, reliability-critical applications.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104MFAFB#V0?

The R5F104MFAFB#V0 operates up to 32 MHz with the RL78 CPU core, delivering 44 DMIPS of processing performance. This is achieved using the high-speed on-chip oscillator calibrated to ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C. The R5F104MFAFB#V0 supports dynamic clock switching between main and subsystem domains, enabling real-time trade-offs between performance and power consumption in industrial applications.

Does the R5F104MFAFB#V0 support in-system programming and secure firmware updates?

Yes, the R5F104MFAFB#V0 supports full in-system programming via its on-chip debug interface and includes flash security features such as block erase prohibition and flash shield window protection. It enables background operation (BGO) for data flash rewriting while executing code from program memory, allowing safe over-the-air firmware updates without system interruption. The R5F104MFAFB#V0 also supports boot swap functionality for fail-safe bootloader transitions.

What analog peripherals are integrated into the R5F104MFAFB#V0?

The R5F104MFAFB#V0 integrates a 12-bit successive approximation register (SAR) ADC with up to 20 input channels, internal 1.45 V reference voltage, and on-chip temperature sensor. It also includes an 8-bit D/A converter with up to two output channels (0 V to VDD), two analog comparators with window mode, and dedicated AVREFP/AVREFM pins for precision ratiometric measurements - all accessible within the 80-pin LFQFP package of the R5F104MFAFB#V0.

How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F104MFAFB#V0?

The Event Link Controller (ELC) in the R5F104MFAFB#V0 enables direct hardware-level linking of 19–26 peripheral events (e.g., ADC end-of-conversion, timer overflow) to target functions (e.g., DTC trigger, interrupt request) without CPU intervention. This eliminates software latency in time-critical sequences such as ADC sampling → DMA transfer → interrupt notification, ensuring deterministic sub-microsecond response - a key advantage of the R5F104MFAFB#V0 in closed-loop industrial control.

What is the industrial temperature grade and packaging specification for the R5F104MFAFB#V0?

The R5F104MFAFB#V0 is rated for industrial operation from -40 to +105°C (G-grade) and packaged in an 80-pin LFQFP with 0.5 mm pitch (Renesas code PLQP0080KE-A). The package includes an exposed die pad recommended for thermal and electrical grounding. This specification meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 and supports reflow soldering per JEDEC standards - confirming the R5F104MFAFB#V0's suitability for harsh industrial environments.