Renesas R5F104MFGFB#V0

Overview

R5F104MFGFB#V0 from Renesas is a 80-pin LFQFP (0.5 mm pitch), industrial-grade RL78/G14 16-bit microcontroller with 256 KB flash, 8 KB data flash, 24 KB RAM, and operation from -40°C to +105°C. It delivers 44 DMIPS at 32 MHz, consumes 66 μA/MHz active current and 0.60 μA in RTC+LVD-only mode, and integrates UART, I²C, SPI, 12-channel 16-bit timers, 10-bit ADC (16 ch), and real-time clock - deployed in motor control and industrial HMI systems.

For engineers reviewing the R5F104MFGFB#V0 datasheet, R5F104MFGFB#V0 pinout, R5F104MFGFB#V0 application, or R5F104MFGFB#V0 equivalent, key selection criteria include its 80-pin LFQFP-0.5mm package, G-grade temperature rating, integrated event link controller (ELC) for peripheral coordination, background data flash rewriting capability, and hardware-based low-power STOP/HALT/SNOOZE modes.

Technical Context

The R5F104MFGFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). It features on-chip debug, self-programming with boot swap and flash shield window functions, and BGO-capable data flash writes.

Its peripheral set includes an Event Link Controller (ELC) enabling direct signal routing between 19–26 event sources and target peripherals without CPU intervention, plus a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes triggered by interrupts - reducing CPU load during high-frequency data movement tasks.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP, 12 × 12 mm body, 0.5 mm pitch, exposed thermal pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104MFGFB#V0, R5F104MGGB#V0 trades extended temperature range for lower cost in milder environments, while R5F104MLGFB#V0 provides scalable memory for evolving feature sets - both retain identical peripheral sets, pinout, and low-power architecture.

Availability

R5F104MFGFB#V0 is available at Aetrix Electronics and suitable for motor control systems, industrial HMIs, smart energy meters, and factory automation sensor nodes requiring stable component supply across long production lifecycles.

Supply support for R5F104MFGFB#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 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally demanding industrial applications - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104MFGFB#V0?

The R5F104MFGFB#V0 operates at up to 32 MHz, delivering 44 DMIPS (Dhrystone MIPS) performance. Its RL78 CPU core achieves a minimum instruction execution time of 0.03125 μs in high-speed mode using the on-chip oscillator. This enables deterministic real-time response for motor control loops and communication protocol timing.

Does the R5F104MFGFB#V0 support background data flash rewriting?

Yes, the R5F104MFGFB#V0 supports Background Operation (BGO) for data flash. Code execution from program memory continues uninterrupted while data flash is being rewritten - critical for applications requiring persistent parameter storage or firmware updates without system downtime.

What low-power modes does the R5F104MFGFB#V0 offer, and what is the lowest current consumption?

The R5F104MFGFB#V0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes 0.60 μA (typical) - enabling multi-year battery life in metering and sensor applications. HALT mode draws 66 μA/MHz, scaling linearly with active clock frequency.

How many analog input channels and what resolution does the ADC in the R5F104MFGFB#V0 provide?

The R5F104MFGFB#V0 integrates a 10-bit successive approximation ADC with up to 16 analog input channels (ANI0–ANI15, plus ANI16–ANI19 on specific pins). It supports internal 1.45 V reference voltage and on-chip temperature sensing - suitable for precision voltage, current, and thermal monitoring.

Is the R5F104MFGFB#V0 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 MCUs in the 80-pin LFQFP-0.5mm package - including R5F104MFGFB#V0, R5F104MGGB#V0, and R5F104MLGFB#V0 - share identical pinouts and electrical characteristics. Firmware and PCB designs are interchangeable across these variants, differing only in flash/RAM capacity and temperature grade.