Renesas R5F104LFGFP#10

Overview

R5F104LFGFP#10 from Renesas is a 64-pin LFQFP, 512 KB flash, 8 KB data flash, 20 KB RAM RL78/G14 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in industrial motor control and sensor interface modules.

For engineers reviewing the R5F104LFGFP#10 datasheet, R5F104LFGFP#10 pinout, R5F104LFGFP#10 application, or R5F104LFGFP#10 equivalent, key selection criteria include its 64-pin LFQFP-0.5 mm pitch package, integrated RTC + LVD + 10-bit ADC (20 ch), dual UART/LIN support, and industrial-grade −40°C to +105°C operation.

Technical Context

The R5F104LFGFP#10 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 integrates a Data Transfer Controller (DTC) supporting normal/repeat/block transfer modes triggered by 19–26 event sources via the Event Link Controller (ELC).

It features a high-accuracy ±1.0% on-chip oscillator (selectable 1–64 MHz), 10-bit A/D converter with internal 1.45 V reference and temperature sensor, and real-time D/A output capability across up to two 8-bit channels - all optimized for deterministic low-power embedded control.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP, 10 × 10 mm body, 0.5 mm pitch, exposed pad not present (non-HWQFN variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LGFP#10 and R5F104LJFP#10, the R5F104LFGFP#10 provides maximum flash headroom for complex control algorithms and retains real-time DAC capability - making it optimal for applications requiring both firmware extensibility and analog actuation within a single chip.

Availability

R5F104LFGFP#10 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home appliance UI panels, and PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R5F104LFGFP#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs targeting cost-sensitive industrial and consumer applications requiring robust peripheral integration, long battery life, and seamless toolchain support.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104LFGFP#10?

The R5F104LFGFP#10 operates at up to 32 MHz, achieving 44 DMIPS (Dhrystone MIPS) performance. Its RL78 CPU core supports configurable instruction timing - minimum execution time is 0.03125 µs at 32 MHz using the high-speed on-chip oscillator, and extends to 30.5 µs at 32.768 kHz for ultra-low-power RTC operation. This dual-speed capability enables both high-throughput control loops and energy-efficient background monitoring in the same device.

Does the R5F104LFGFP#10 support in-system programming and secure firmware updates?

Yes, the R5F104LFGFP#10 supports secure in-system programming via its on-chip debug interface and flash shield window function. It implements boot swapping with dual-bank flash layout, allowing validated firmware images to be written to inactive bank while running from the active bank - ensuring zero-downtime updates. Block erase prohibition and flash write protection registers prevent unauthorized modification of protected code regions.

What are the analog capabilities of the R5F104LFGFP#10, and how are they applied in sensor systems?

The R5F104LFGFP#10 integrates a 10-bit A/D converter with 20 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor - enabling direct ambient temperature measurement without external components. It also includes two 8-bit D/A converters with real-time output capability. In sensor systems, this allows simultaneous acquisition of multiple analog signals (e.g., pressure, humidity, current) and closed-loop analog conditioning (e.g., DAC-driven offset correction for precision ADC front-ends).

How does the Event Link Controller (ELC) enhance deterministic timing in the R5F104LFGFP#10?

The ELC in the R5F104LFGFP#10 enables hardware-level linking of up to 26 peripheral events - such as ADC conversion completion, timer match, or UART receive - directly to target functions like DTC transfers or interrupt generation. This eliminates CPU polling and ISR latency, achieving sub-microsecond response times. For example, an ADC end-of-conversion event can trigger immediate DMA transfer to RAM and auto-reload of PWM registers - all without CPU involvement - ensuring jitter-free motor commutation or sensor sampling.

What industrial temperature and voltage specifications apply to the R5F104LFGFP#10?

The R5F104LFGFP#10 is rated for industrial operation from −40°C to +105°C (G-grade) and supports a wide 1.6 V to 5.5 V supply range. Its on-chip voltage detector (LVD) offers 14 programmable threshold levels for brown-out detection and reset generation, and the internal regulator maintains stable core voltage across this full range. These specifications make the R5F104LFGFP#10 suitable for harsh environments including factory automation, HVAC controls, and outdoor metering equipment.