Renesas R5F104LGGXXXFB#V0

Overview

R5F104LGGXXXFB#V0 from Renesas is a 64-pin LFQFP, 512 KB flash, 8 KB data flash, 48 KB RAM RL78/G14 16-bit MCU operating at 32 MHz (44 DMIPS), featuring ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), 10-bit ADC (20 channels), and integrated RTC with calendar support - deployed in industrial motor control and smart sensor nodes.

For engineers reviewing the R5F104LGGXXXFB#V0 datasheet, R5F104LGGXXXFB#V0 pinout, R5F104LGGXXXFB#V0 application, or R5F104LGGXXXFB#V0 equivalent, key selection criteria include its -40°C to +105°C industrial-grade temperature rating (G suffix), 0.5 mm pitch LFQFP-64 package (FB), and hardware-peripheral flexibility including ELC, DTC, and dual SPI/I²C/UART interfaces for deterministic real-time control.

Technical Context

The R5F104LGGXXXFB#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 Event Link Controller (ELC) for hardware-triggered peripheral chaining and Data Transfer Controller (DTC) for zero-CPU-overhead memory transfers.

Its mixed-signal subsystem includes a 10-bit 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). The high-accuracy ±1.0% on-chip oscillator (1–64 MHz selectable) eliminates external crystal dependency in cost-sensitive designs.

Key Specifications

Pinout & Package

Package: LFQFP-64, 10 × 10 mm body, 0.5 mm pitch, exposed thermal pad (not electrically connected per datasheet), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LGGXXXFB#V0, the R5F104LGGBFB#V0 reduces flash/RAM capacity while retaining identical timing, power, and peripheral capabilities - ideal for cost-constrained volume production; the R5F104LJGFB#V0 offers intermediate memory scaling with identical thermal and packaging compliance, easing migration from legacy RL78 designs.

Availability

R5F104LGGXXXFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and medical infusion pump controllers requiring stable component supply across extended product lifecycles.

Supply support for R5F104LGGXXXFB#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 family delivers true low-power 16-bit performance for cost-sensitive industrial and consumer applications - designed specifically for systems demanding sub-μA sleep, rich analog integration, and robust real-time peripheral orchestration without external co-processors.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104LGGXXXFB#V0?

The R5F104LGGXXXFB#V0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This is achieved using the high-speed on-chip oscillator (±1.0% accuracy) without requiring an external crystal. Its RL78 CPU core executes instructions in as little as 0.03125 µs at this frequency, enabling deterministic real-time response in motor control and sensor fusion applications. The R5F104LGGXXXFB#V0 maintains full peripheral functionality across the entire 1.6–5.5 V supply range.

Does the R5F104LGGXXXFB#V0 support background data flash rewriting while executing code from main flash memory?

Yes, the R5F104LGGXXXFB#V0 supports Background Operation (BGO) for data flash. Instructions can be fetched and executed from code flash memory while simultaneously rewriting data flash sectors - critical for over-the-air updates and runtime parameter storage. The data flash endurance is rated at 1,000,000 write cycles (typical), and rewrites are supported across the full 1.8–5.5 V VDD range. This capability is implemented in hardware and requires no CPU suspension.

What are the key power-saving modes available on the R5F104LGGXXXFB#V0, and what is the lowest achievable current draw?

The R5F104LGGXXXFB#V0 offers HALT, STOP, and SNOOZE low-power modes. In STOP mode with only RTC and LVD active, it draws just 0.60 μA (typical) at 25°C - verified per datasheet R01DS0053EJ0370. HALT mode consumes 66 μA/MHz during active operation. SNOOZE mode enables selective peripheral operation (e.g., UART receive) while CPU remains halted, reducing average current in polling-based communication. All modes retain RAM content and support fast wake-up (< 4 µs from HALT).

How many analog input channels does the 10-bit ADC in the R5F104LGGXXXFB#V0 support, and does it include internal reference and temperature sensing?

The R5F104LGGXXXFB#V0 integrates a 10-bit successive-approximation ADC with up to 20 analog input channels (ANI0–ANI19), including dedicated VCOUT0/VCOUT1 pins for voltage-controlled oscillator monitoring. It features an internal 1.45 V reference voltage and an on-die temperature sensor - both accessible without external components. The ADC operates across the full 1.6–5.5 V supply range and supports scan-mode conversion with automatic channel sequencing.

Is the R5F104LGGXXXFB#V0 pin-compatible with other RL78/G14 variants in the same 64-pin LFQFP package?

Yes, all RL78/G14 devices in the 64-pin LFQFP package (FB suffix) share identical pinouts and electrical characteristics - including R5F104LGGXXXFB#V0, R5F104LJGFB#V0, and R5F104LGGBFB#V0. This enables direct hardware reuse across memory variants. Pin functions (e.g., P30 = RTC1HZ, P121/X1 = crystal input) are consistent; only flash/RAM sizes and some peripheral enablement differ in firmware configuration. No PCB redesign is needed when migrating between these FB-package G-grade variants.