Renesas R5F104LEGFP#30

Overview

R5F104LEGFP#30 from Renesas is a 48-pin LFQFP, 512 KB flash, 48 KB RAM RL78/G14 16-bit MCU with ultra-low-power operation (66 μA/MHz), real-time clock, 10-bit ADC (20 channels), and integrated UART/I²C/CSI interfaces - deployed in industrial motor control, sensor hubs, and battery-powered HMI systems.

For engineers reviewing the R5F104LEGFP#30 datasheet, R5F104LEGFP#30 pinout, R5F104LEGFP#30 application, or R5F104LEGFP#30 equivalent, key selection criteria include its -40°C to +105°C industrial-grade temperature rating (G-suffix), 0.5 mm pitch LFQFP-48 package, 512 KB code flash with data flash shield window, and support for background data flash rewriting at VDD = 1.8–5.5 V.

Technical Context

The R5F104LEGFP#30 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), and includes multiply/divide/accumulate instructions plus 1 MB address space. It integrates Event Link Controller (ELC) for hardware-triggered peripheral chaining and Data Transfer Controller (DTC) with block/chain transfer modes.

Its mixed-signal subsystem includes an 8/10-bit SAR ADC with internal 1.45 V reference and temperature sensor, dual 8-bit DAC outputs (0–VDD), two comparators with window mode, and programmable low-voltage detection (14-level LVD) with interrupt/reset options - all operating across 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 × 7 mm, 0.5 mm pitch), lead-free, RoHS-compliant, industrial-grade (G-suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LKGFB#30 and R5F104LLAFA#V0, the R5F104LEGFP#30 offers optimal balance of industrial temperature rating, debug flexibility (TRDIO), and legacy-compatible LFQFP packaging - making it ideal for cost-sensitive, volume-manufactured industrial controls where LQFP assembly infrastructure already exists.

Availability

R5F104LEGFP#30 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor hubs, and battery-powered metering requiring stable component supply across extended product lifecycles.

Supply support for R5F104LEGFP#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 delivers true low-power performance for general-purpose industrial applications, combining energy efficiency, rich analog integration, and robust debug capabilities - designed specifically for cost-sensitive, long-lifecycle embedded systems.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F104LEGFP#30?

The R5F104LEGFP#30 operates up to 32 MHz with a typical active current of 66 μA/MHz at VDD = 3.3 V and TA = 25°C. Its high-speed on-chip oscillator supports ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C, enabling precise timing without external crystals in many applications. The R5F104LEGFP#30 achieves this while maintaining full peripheral functionality including ADC, timers, and serial interfaces.

Does the R5F104LEGFP#30 support in-system programming and secure firmware updates?

Yes, the R5F104LEGFP#30 supports full in-system programming via on-chip debug interface and includes flash shield window protection to prevent unauthorized access to code memory. It enables boot swapping and background data flash rewriting (BGO), allowing safe firmware updates without halting real-time operations. The R5F104LEGFP#30 also features block erase prohibition and 1 MB address space segmentation for secure partitioning.

How many serial communication interfaces does the R5F104LEGFP#30 integrate, and what protocols are supported?

The R5F104LEGFP#30 integrates up to 10 serial channels: 3–4 UART/LIN interfaces, 4–10 I²C/simplified I²C channels, and 3–8 CSI (SPI-compatible) channels. All UARTs support LIN 2.2 compliance, and CSI modules include automatic chip select control. The R5F104LEGFP#30 uses peripheral I/O redirection to assign these functions flexibly across GPIO pins.

What analog peripherals are included in the R5F104LEGFP#30, and how are they calibrated?

The R5F104LEGFP#30 includes a 10-bit SAR ADC with 20 input channels, internal 1.45 V reference, and factory-calibrated temperature sensor (±2.5°C accuracy). It also features two 8-bit DACs (0–VDD output), two comparators with window mode, and 14-level LVD. Calibration data for ADC/DAC is stored in ROM and applied automatically during initialization. The R5F104LEGFP#30 supports differential input mode and scan sequencing without CPU intervention.

Is the R5F104LEGFP#30 pin-compatible with other RL78/G14 variants, and what package options share identical pinout?

No, the R5F104LEGFP#30 is not pin-compatible with other RL78/G14 variants due to differing pin counts and functions - its 48-pin LFQFP package has unique pin assignments defined in Rev. 3.70 datasheet Figure 1-12. Only other R5F104xxGFP#xx parts (e.g., R5F104LGAFP#V0) share the same 48-pin LFQFP-0.5mm footprint and pinout. The R5F104LEGFP#30 requires specific layout adherence to its REGC capacitor placement and exposed pad grounding guidelines.