Renesas R5F104GEGFB#10

Overview

R5F104GEGFB#10 from Renesas Electronics is a 48-pin LFQFP, 128 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller with ultra-low-power operation (66 μA/MHz), integrated 10-bit ADC (16 channels), RTC, and dual UART/LIN interfaces - deployed in industrial motor control and sensor node applications requiring extended battery life and -40°C to +105°C operation.

For engineers reviewing the R5F104GEGFB#10 datasheet, R5F104GEGFB#10 pinout, R5F104GEGFB#10 application, or R5F104GEGFB#10 equivalent, key selection criteria include its 128 KB code flash with data flash shield window, 48-pin 0.5 mm pitch LFQFP package, 16-channel 10-bit ADC with internal reference, real-time clock with calendar function, and support for SNOOZE mode wake-up via peripheral events.

Technical Context

The R5F104GEGFB#10 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). It integrates Event Link Controller (ELC) for hardware-triggered peripheral chaining and Data Transfer Controller (DTC) for interrupt-driven memory transfers without CPU intervention.

Its power management includes HALT, STOP, and SNOOZE modes, with 0.60 μA RTC+LVD operation. The high-accuracy on-chip oscillator delivers ±1.0% stability across 1.8–5.5 V and -20 to +85°C, enabling precise timing without external crystals in cost-sensitive designs.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade (G-grade, -40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GEGFB#10, R5F104GGGFB#10 offers 4 KB more RAM for enhanced multitasking, while R5F104GEAFB#10 reduces flash/RAM capacity and temperature rating to lower BOM cost - both retain identical pinout and peripheral set, enabling direct substitution only when memory and temp requirements align.

Availability

R5F104GEGFB#10 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and energy metering subsystems requiring stable component supply, long-term lifecycle assurance, and G-grade temperature compliance.

Supply support for R5F104GEGFB#10 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 solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications requiring robust analog integration, flexible connectivity, and extended temperature operation.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F104GEGFB#10?

The R5F104GEGFB#10 operates up to 32 MHz with a typical active current of 66 μA per MHz at VDD = 3.3 V and TA = 25°C. Its high-accuracy on-chip oscillator supports frequencies from 1 MHz to 64 MHz, and power scales linearly - e.g., 16 MHz operation draws ~1.06 mA. At 32.768 kHz RTC-only mode, it consumes just 0.60 μA, making R5F104GEGFB#10 ideal for always-on sensing applications.

Does the R5F104GEGFB#10 support in-system programming and secure firmware updates?

Yes, the R5F104GEGFB#10 supports full in-system programming via its on-chip debug interface and includes flash shield window functionality to protect critical bootloader sections. It enables self-programming with boot swapping, allowing safe dual-bank firmware updates without external tools. The R5F104GEGFB#10 also supports prohibition of block erase/write for security-critical regions, verified through Renesas Flash Self-Programming Library (R20UT2944).

How many analog input channels does the R5F104GEGFB#10 ADC support, and what reference options are available?

The R5F104GEGFB#10 integrates a 10-bit successive-approximation ADC with 16 analog input channels (ANI0–ANI15), plus two additional channels (ANI16–ANI19) accessible via alternate functions. It supports internal 1.45 V reference voltage, external reference (AVREFP/AVREFM), and temperature sensor readout - all selectable per channel. This flexibility allows R5F104GEGFB#10 to interface directly with resistive sensors, thermistors, and industrial transducers without external references.

What UART/LIN capabilities does the R5F104GEGFB#10 provide, and are they compliant with ISO 14229 or SAE J2602?

The R5F104GEGFB#10 features three independent UART modules, each supporting LIN 2.2 physical layer compliance (including automatic sync-break detection, checksum generation, and wakeup pulse handling). While it does not implement full ISO 14229 (UDS) or SAE J2602 stack in hardware, its UART peripherals meet the electrical and timing requirements for LIN bus communication - enabling R5F104GEGFB#10 to serve as LIN slave nodes in automotive body control modules when paired with appropriate software stack.

Is the R5F104GEGFB#10 pin-compatible with other RL78/G14 variants in the same 48-pin LFQFP package?

Yes, all RL78/G14 devices in the 48-pin LFQFP package (e.g., R5F104GKAFB#10, R5F104GLAFB#10, R5F104GAGFB#10) share identical pinouts and mechanical footprint. Signal assignments (e.g., P00–P01 for UART1, P20–P27 for ADC) are consistent across the family. This allows R5F104GEGFB#10 to be used in designs targeting scalability - for example, upgrading flash/RAM capacity later without PCB revision - provided peripheral configuration and firmware accommodate the variant's specific memory map and feature set.