Renesas R5F104LCGFB#V0

Overview

R5F104LCGFB#V0 from Renesas is a 64-pin LFQFP (0.5 mm pitch), 512 KB flash, 8 KB data flash, 48 KB RAM RL78/G14 16-bit MCU operating from 1.6–5.5 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 control panels requiring extended temperature operation and secure firmware updates.

For engineers reviewing the R5F104LCGFB#V0 datasheet, R5F104LCGFB#V0 pinout, R5F104LCGFB#V0 application, or R5F104LCGFB#V0 equivalent, key selection criteria include its -40°C to +105°C industrial-grade rating (G suffix), LFQFP-64 package compatibility with high-density PCB layouts, integrated RTC with calendar/alarm, and support for background data flash rewriting during program execution.

Technical Context

The R5F104LCGFB#V0 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), multiply/divide/accumulate instructions, and 1 MB address space. It integrates a configurable Event Link Controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention.

Its power management includes HALT, STOP, and SNOOZE modes, on-chip POR and 14-level LVD, and a high-accuracy ±1.0% on-chip oscillator (1–64 MHz). The device supports simultaneous operation of multiple serial interfaces-including up to 10 I²C channels, 4 UART/LIN channels, and 8 CSI/SPI channels-coordinated via the Data Transfer Controller (DTC) with chain transfer capability.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LLGFB#V0 and R5F104LGGB#V0, the R5F104LCGFB#V0 uniquely combines maximum flash/RAM capacity with industrial-grade temperature range in the compact LFQFP-64 (0.5 mm) package - critical for space-constrained, high-reliability embedded controllers.

Availability

R5F104LCGFB#V0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, and programmable logic controller modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F104LCGFB#V0 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 performance for general-purpose industrial control, targeting applications needing robust analog integration, secure firmware, and extended temperature operation without external timing or power components.

FAQ

What is the maximum operating frequency and processing performance of the R5F104LCGFB#V0?

The R5F104LCGFB#V0 operates at up to 32 MHz and delivers 44 DMIPS performance using the RL78 CPU core. Its high-accuracy on-chip oscillator supports frequencies from 1 MHz to 64 MHz with ±1.0% tolerance across -20°C to +85°C, enabling precise timing without external crystals in many applications. The R5F104LCGFB#V0 achieves this while maintaining ultra-low active current consumption of 66 μA per MHz.

Does the R5F104LCGFB#V0 support background data flash rewriting during program execution?

Yes, the R5F104LCGFB#V0 supports background operation (BGO) for data flash rewriting. This allows the CPU to execute instructions from program memory while simultaneously erasing or programming the 8 KB data flash - essential for reliable firmware updates, parameter storage, and EEPROM emulation without system interruption. The R5F104LCGFB#V0 guarantees 1,000,000 rewrite cycles at VDD = 1.8–5.5 V.

What is the temperature grade and package type of the R5F104LCGFB#V0?

The R5F104LCGFB#V0 is an industrial-grade device rated for -40°C to +105°C operation (G-suffix), packaged in a 64-pin LFQFP with 0.5 mm pitch and 10 × 10 mm body. Its #V0 packaging specification indicates tray delivery, and the LFQFP-64 footprint ensures compatibility with high-density PCB layouts while providing 92 total I/O pins - including 20-channel 10-bit ADC inputs and multiple serial interface signals.

How does the Event Link Controller (ELC) enhance real-time performance in the R5F104LCGFB#V0?

The Event Link Controller (ELC) in the R5F104LCGFB#V0 enables hardware-level peripheral chaining - for example, triggering a DTC transfer upon ADC conversion completion, then starting a timer upon transfer completion - all without CPU involvement or interrupt latency. This reduces ISR overhead, improves deterministic response, and lowers power consumption. The R5F104LCGFB#V0 supports linking up to 26 event sources to designated peripheral functions.

Can the R5F104LCGFB#V0 operate from a single 1.8 V supply, and what analog features are included?

Yes, the R5F104LCGFB#V0 operates from a single supply spanning 1.6 V to 5.5 V - fully functional at 1.8 V. It integrates a 10-bit ADC with 20 input channels, internal 1.45 V reference voltage, on-chip temperature sensor, dual 8-bit DACs (0–VDD output), and two comparators with window mode. These analog resources allow the R5F104LCGFB#V0 to replace external signal conditioning components in sensor interface and closed-loop control applications.