Renesas R5F104GJAFB#V0

Overview

R5F104GJAFB#V0 from Renesas is a 48-pin LFQFP, 0.5 mm pitch, industrial-grade (G) 16-bit RL78/G14 microcontroller with 192 KB flash, 8 KB data flash, 20 KB RAM, and operation up to 32 MHz delivering 44 DMIPS. It integrates 12-bit ADC (20 channels), dual 8-bit DACs, RTC with calendar, low-power STOP/HALT/SNOOZE modes (0.60 μA RTC+LVD), and multiple serial interfaces for embedded control in motor drives and sensor nodes.

For engineers reviewing the R5F104GJAFB#V0 datasheet, R5F104GJAFB#V0 pinout, R5F104GJAFB#V0 application, or R5F104GJAFB#V0 equivalent, this page delivers verified package mapping, validated peripheral roles, confirmed low-power timing specs, and real-world use context for rapid schematic integration and firmware validation.

Technical Context

The R5F104GJAFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). It features on-chip high-accuracy ±1.0% oscillator (1–64 MHz selectable) and dedicated low-speed oscillator for watchdog timer.

Peripheral integration includes Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/chain transfer, and background operation (BGO) for concurrent code execution during data flash rewrite - enabling seamless firmware updates without halting real-time tasks.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GJAFB#V0, R5F104GHAFB#V0 offers reduced memory capacity at lower cost for basic control, while R5F104GKAFB#V0 provides expanded flash/RAM for feature-rich firmware - all share identical pinout, timing, and peripheral configuration, enabling scalable design reuse.

Availability

R5F104GJAFB#V0 is available at Aetrix Electronics and suitable for smart metering, industrial motor drives, medical sensor hubs, and building automation nodes requiring stable component supply across extended product lifecycles.

Supply support for R5F104GJAFB#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, and power solutions for automotive, industrial, and enterprise markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally constrained industrial control applications - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F104GJAFB#V0?

The R5F104GJAFB#V0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating reflects Dhrystone 2.1 benchmark results under standard conditions (VDD = 3.3 V, TA = 25°C) and is enabled by the RL78 CPU's 3-stage pipeline and optimized instruction set - critical for real-time loop execution in motor control and sensor fusion applications where deterministic timing is required.

Does the R5F104GJAFB#V0 support hardware-accelerated data movement between peripherals without CPU involvement?

Yes, the R5F104GJAFB#V0 integrates both the Data Transfer Controller (DTC) and Event Link Controller (ELC). The DTC handles block, repeat, and chain transfers triggered by interrupts, while the ELC directly links 19–26 event sources (e.g., ADC conversion complete, timer overflow) to peripheral functions (e.g., PWM reload, DAC update) - enabling fully autonomous data flow and reducing CPU load by up to 30% in high-throughput sensor or motor control systems.

What are the flash memory configuration details - size, erase granularity, and security features - for the R5F104GJAFB#V0?

The R5F104GJAFB#V0 contains 192 KB of code flash memory organized in 1 KB blocks, with 8 KB of separate data flash. It supports block-erase prohibition and rewriting lock (security function), on-chip debug, and self-programming with boot swap and flash shield window - allowing secure firmware updates and protected bootloader regions essential for certified industrial and medical devices.

How does the R5F104GJAFB#V0 achieve ultra-low power consumption in STOP mode, and what peripherals remain active?

The R5F104GJAFB#V0 achieves 0.60 μA in STOP mode by powering down the CPU, flash, and most peripherals while retaining operation of the real-time clock (RTC), low-voltage detector (LVD), and associated wakeup logic. This enables decade-scale battery life in applications like utility meters and remote sensors - where periodic timestamped readings must occur autonomously without compromising system security or accuracy.

Is the R5F104GJAFB#V0 pin-compatible with other RL78/G14 variants in the same 48-pin LFQFP package?

Yes, all RL78/G14 devices in the 48-pin LFQFP (FB) package - including R5F104GJAFB#V0, R5F104GHAFB#V0, and R5F104GKAFB#V0 - share identical pinouts, electrical characteristics, and peripheral mappings. This allows direct substitution within the same footprint for memory-scaling decisions, simplifying design iteration and inventory management without PCB redesign.