Renesas R5F104EGGNA#20

Overview

R5F104EGGNA#20 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G14 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 10-bit ADC (20 channels), UART/SPI/I²C interfaces, RTC, and on-chip debug.

For engineers reviewing the R5F104EGGNA#20 datasheet, R5F104EGGNA#20 pinout, R5F104EGGNA#20 application, or R5F104EGGNA#20 equivalent, key selection criteria include industrial-temperature operation, integrated data flash with 1M rewrite cycles, hardware event linking (ELC), and low-power STOP/HALT modes for battery-powered sensor nodes and motor control subsystems.

Technical Context

The R5F104EGGNA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It supports multiply/divide/accumulate instructions and 1 MB address space.

Its peripheral set includes Event Link Controller (ELC) for 19–26 event-source routing, Data Transfer Controller (DTC) with chain transfer, and dual-clock domain operation (main + subsystem clock) enabling concurrent RTC/LVD functionality in ultra-low-power STOP mode.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FGGNA#20, the R5F104EGGNA#20 provides 50% more flash and double the RAM for enhanced firmware flexibility; versus R5F104LGGNA#20, it offers identical data flash and temperature grade in a smaller 40-pin HWQFN package-ideal for space-constrained industrial modules where memory headroom matters but pin count must be minimized.

Availability

R5F104EGGNA#20 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, programmable power supplies, and PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104EGGNA#20 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 industrial and consumer applications requiring robust operation from -40 to +105°C, integrated analog peripherals, and ultra-low standby current.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104EGGNA#20?

The R5F104EGGNA#20 operates at up to 32 MHz, delivering 44 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C. The R5F104EGGNA#20 maintains this performance while consuming only 66 μA per MHz in active mode, making it suitable for real-time control applications with strict power budgets.

Does the R5F104EGGNA#20 support hardware-accelerated data movement without CPU involvement?

Yes, the R5F104EGGNA#20 includes a Data Transfer Controller (DTC) that supports normal, repeat, block, and chain transfer modes activated by interrupt sources. This allows autonomous movement of data between memory and peripherals such as ADC, UART, or SPI - reducing CPU load and improving deterministic response in time-critical applications like motor control or sensor acquisition.

What are the data flash endurance and programming voltage requirements for the R5F104EGGNA#20?

The R5F104EGGNA#20 integrates 8 KB of data flash rated for 1,000,000 write/erase cycles (typical) and supports background operation (BGO), enabling code execution during rewrites. Programming is supported across the full supply range of 1.8–5.5 V, eliminating the need for external voltage boost circuits and simplifying design for battery-powered or wide-input industrial systems.

How does the Event Link Controller (ELC) enhance real-time responsiveness in the R5F104EGGNA#20?

The ELC in the R5F104EGGNA#20 allows up to 26 peripheral event signals - including ADC end-of-conversion, timer overflow, or UART receive complete - to trigger other peripherals directly without CPU intervention. For example, an ADC completion event can automatically start a DTC transfer or increment a timer counter, reducing interrupt latency and firmware complexity in deterministic control loops.

Is the R5F104EGGNA#20 qualified for industrial temperature operation, and what packaging supports this grade?

Yes, the R5F104EGGNA#20 is specified for -40 to +105°C operation (G-grade industrial qualification) and is supplied in a 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) package with exposed die pad. This package meets JEDEC moisture sensitivity level 3 and supports reflow soldering, making it suitable for harsh-environment applications such as factory automation controllers and outdoor metering equipment.