Renesas R5F104FEGFP#50

Overview

R5F104FEGFP#50 from Renesas is a 44-pin LQFP-packaged RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, 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, 16-bit timers, 10-bit ADC (16 ch), and real-time clock - deployed in industrial motor control and sensor interface modules.

For engineers reviewing the R5F104FEGFP#50 datasheet, R5F104FEGFP#50 pinout, R5F104FEGFP#50 application, or R5F104FEGFP#50 equivalent, key selection criteria include its G-grade temperature rating, 44-pin LQFP-0.8 mm pitch package, integrated data flash with 1M-cycle endurance, and support for background operation during flash rewriting - critical for firmware-over-the-air updates in field-deployed equipment.

Technical Context

The R5F104FEGFP#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz). Its on-chip high-speed oscillator offers ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C, enabling precise timing without external crystals in cost-sensitive designs.

Peripheral integration includes Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/chain transfer modes, and dual-voltage I/O (1.8/2.5/3.0 V interface capability), allowing direct connection to low-voltage sensors and logic without level shifters in mixed-supply systems.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, industrial G-grade temperature rating (-40 to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FEGFP#50, R5F104FGGFP#50 provides 33% more flash and 33% more RAM for complex firmware, while R5F104FEAFP#50 reduces flash by 33% and RAM by 54% - enabling tiered product variants using identical PCB layouts and toolchains.

Availability

R5F104FEGFP#50 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable logic controller I/O modules, and power supply monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104FEGFP#50 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 industrial, automotive, and IoT markets.

The RL78/G14 family targets cost-sensitive, ultra-low-power embedded applications requiring robust industrial qualification, integrated analog peripherals, and secure firmware update capabilities - optimized for appliance control, sensor hubs, and factory automation edge devices.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104FEGFP#50?

The R5F104FEGFP#50 operates up to 32 MHz, delivering 44 DMIPS of processing performance. This frequency is achievable using the on-chip high-speed oscillator (±1.0% accuracy) or an external crystal. The RL78 CPU core's 3-stage pipeline and CISC architecture enable efficient execution of control-oriented code, making the R5F104FEGFP#50 well-suited for real-time motor control and sensor fusion tasks where deterministic timing matters.

Does the R5F104FEGFP#50 support in-system programming and secure firmware updates?

Yes, the R5F104FEGFP#50 supports full in-system programming via its on-chip debug function and self-programming capability. It includes boot swapping, flash shield window protection, and block-level erase/write prohibition - preventing unauthorized access to firmware. These features allow secure over-the-air or USB-based firmware updates in deployed R5F104FEGFP#50-based devices without requiring external programmers.

What analog peripherals are integrated into the R5F104FEGFP#50, and how are they calibrated?

The R5F104FEGFP#50 integrates a 10-bit ADC with 16 input channels, an internal 1.45 V reference voltage, and an on-chip temperature sensor. ADC offset and gain calibration values are stored in ROM and automatically applied during initialization. No user calibration is required - the R5F104FEGFP#50 achieves ±1 LSB integral nonlinearity across its operating range, ensuring accurate sensor readings in industrial environments.

How does the R5F104FEGFP#50 manage power in battery-operated applications?

The R5F104FEGFP#50 offers multiple low-power modes: HALT (CPU stopped, peripherals active), STOP (only RTC and LVD active at 0.60 μA), and SNOOZE (selected peripherals operate while CPU sleeps). Its 1.6–5.5 V wide supply range and 66 μA/MHz active current enable multi-year operation on coin cells or primary batteries - especially when paired with RTC wake-up and background data flash writes in the R5F104FEGFP#50's firmware design.

Is the R5F104FEGFP#50 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 devices in the 44-pin LQFP-0.8 mm package - including R5F104FEGFP#50, R5F104FGGFP#50, and R5F104FEAFP#50 - share identical pinouts and electrical characteristics. This enables hardware reuse across product tiers: designers can scale flash/RAM capacity without modifying PCB layout, simplifying qualification and reducing time-to-market for derivative R5F104FEGFP#50-based products.