Renesas R5F104JEGFA#30

Overview

R5F104JEGFA#30 from Renesas is a 52-pin LQFP-0.65mm-pitch 16-bit RL78/G14 microcontroller with 256 KB flash, 8 KB data flash, 20 KB RAM, and industrial-grade operation (−40°C to +105°C). It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low-power modes (66 μA/MHz active, 0.60 μA RTC+LVD), 10-bit ADC (16 channels), UART/LIN ×3, I²C ×4, and 12-channel 16-bit timer array for embedded control in motor drives and sensor nodes.

For engineers reviewing the R5F104JEGFA#30 datasheet, R5F104JEGFA#30 pinout, R5F104JEGFA#30 application, or R5F104JEGFA#30 equivalent, key selection criteria include its G-grade temperature rating, 52-pin LQFP package with peripheral I/O redirection, integrated real-time clock with calendar, and support for background data flash rewriting during program execution.

Technical Context

The R5F104JEGFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz to 30.5 µs @ 32.768 kHz). It features an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event triggering without CPU intervention and a Data Transfer Controller (DTC) supporting block, repeat, and chain transfers activated by 19–26 interrupt sources.

Power management includes HALT, STOP, and SNOOZE modes, on-chip POR and LVD (14-level selectable), and a high-accuracy ±1.0% on-chip oscillator (1–64 MHz). The device supports self-programming with boot swapping and flash shield window protection, and executes instructions from code flash while rewriting data flash via Background Operation (BGO).

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, exposed pad not applicable (plastic body).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104JEGFA#30, R5F104JHGFA#30 reduces thermal qualification at no performance cost, while R5F104JEGFB#30 maintains full functionality in a denser package - both require explicit validation for safety-critical or high-reliability deployments where the original G-grade LQFP's proven thermal robustness is specified.

Availability

R5F104JEGFA#30 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, and home appliance UI systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104JEGFA#30 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 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for industrial controls, appliances, and sensor interfaces.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104JEGFA#30?

The R5F104JEGFA#30 operates at up to 32 MHz and delivers 44 DMIPS. This performance level is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, with minimum instruction execution time configurable from 0.03125 µs (at 32 MHz) down to 30.5 µs (at 32.768 kHz). The R5F104JEGFA#30 maintains this rating across its full industrial temperature range of −40°C to +105°C.

Does the R5F104JEGFA#30 support background data flash rewriting while executing code from main flash memory?

Yes, the R5F104JEGFA#30 supports Background Operation (BGO) for data flash. This allows the CPU to continue executing instructions from code flash memory while simultaneously rewriting data flash - essential for seamless firmware updates and parameter storage without system interruption. The R5F104JEGFA#30 guarantees 1,000,000 rewrite cycles (typical) at VDD = 1.8–5.5 V.

What are the key differences between the R5F104JEGFA#30 and R5F104JHGFA#30?

The R5F104JEGFA#30 and R5F104JHGFA#30 share identical memory (256 KB flash, 8 KB data flash, 20 KB RAM), peripherals, and pinout, but differ in temperature grade: R5F104JEGFA#30 is rated for −40°C to +105°C (G-field), while R5F104JHGFA#30 is rated for −40°C to +85°C (A/D-field). Both use the same 52-pin LQFP-0.65mm package and are functionally interchangeable where thermal requirements permit.

Which serial communication interfaces are available on the R5F104JEGFA#30, and how many channels does each support?

The R5F104JEGFA#30 provides UART/LIN ×3 channels, I²C ×4 channels, CSI (SPI-compatible) ×3 channels, and SSI ×1 channel. All interfaces are software-configurable and supported by the Event Link Controller (ELC) for hardware-triggered transfers. The R5F104JEGFA#30 also supports peripheral I/O redirection, allowing multiple serial functions to be assigned to alternate pins via PIOR registers.

How does the R5F104JEGFA#30 achieve ultra-low power consumption in STOP mode?

The R5F104JEGFA#30 achieves 0.60 μA in STOP mode by disabling the CPU, flash, and most peripherals while retaining operation of the real-time clock (RTC), low-voltage detector (LVD), and RAM retention. This mode is enabled via software control and supports wake-up via RTC alarm, LVD interrupt, or external pin interrupt - making the R5F104JEGFA#30 suitable for battery-powered applications requiring multi-year operation.