Renesas R5F104GCAFB#X0

Overview

R5F104GCAFB#X0 from Renesas is a 48-pin LFQFP, 0.5 mm pitch, industrial-grade (G) 16-bit RL78/G14 microcontroller with 96 KB flash, 8 KB data flash, 12 KB RAM, and operation from -40°C to +105°C. It integrates a 32 MHz RL78 CPU core delivering 44 DMIPS, ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), and peripherals including 10-channel 10-bit ADC, dual UART/LIN, I²C, SPI, RTC, and 12-bit interval timer - deployed in battery-powered industrial sensor nodes and motor control interfaces.

For engineers reviewing the R5F104GCAFB#X0 datasheet, R5F104GCAFB#X0 pinout, R5F104GCAFB#X0 application, or R5F104GCAFB#X0 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm package, G-grade temperature rating, 96 KB/8 KB/12 KB memory configuration, integrated LIN-capable UARTs, and support for background data flash rewriting with 1M-cycle endurance.

Technical Context

The R5F104GCAFB#X0 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 supports multiply/divide/accumulate instructions and a 1 MB address space across four register banks.

Its peripheral set includes an Event Link Controller (ELC) enabling direct hardware-triggered transfers between 19–26 event sources and peripherals, a Data Transfer Controller (DTC) supporting normal/repeat/block transfer modes with chain functionality, and a Real-Time Clock with calendar, alarm, and clock correction - all operating under single-supply 1.6–5.5 V.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch (Renesas code FB), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104GEAFB#X0 and R5F104GHAFB#X0, the R5F104GCAFB#X0 provides optimal balance of memory (96 KB flash / 12 KB RAM), ultra-low power (0.60 μA RTC+LVD), and industrial temperature range (-40°C to +105°C) for mid-complexity embedded control where cost, power, and reliability are co-prioritized.

Availability

R5F104GCAFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and G-grade thermal reliability.

Supply support for R5F104GCAFB#X0 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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, 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 optimized for cost-sensitive, battery-operated, and thermally demanding industrial applications - emphasizing energy efficiency, integrated analog, and robust debug capabilities.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104GCAFB#X0?

The R5F104GCAFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. Its RL78 CPU core supports configurable instruction timing - from 0.03125 μs per instruction at 32 MHz down to 30.5 μs at 32.768 kHz - enabling dynamic trade-offs between speed and ultra-low power in the R5F104GCAFB#X0.

Does the R5F104GCAFB#X0 support LIN bus communication, and how is it implemented?

Yes, the R5F104GCAFB#X0 supports LIN bus communication through its UART2 peripheral, which includes hardware features compliant with ISO 17987-4 for LIN physical layer timing and synchronization. When paired with an external LIN transceiver, the R5F104GCAFB#X0 handles protocol framing, checksum calculation, and slave node response timing without CPU intervention.

What are the flash memory configuration and write endurance specifications for the R5F104GCAFB#X0?

The R5F104GCAFB#X0 contains 96 KB of code flash memory organized in 1 KB blocks and 8 KB of data flash memory. The data flash supports background operation (BGO), allowing program execution during rewrites, and guarantees 1,000,000 write cycles at VDD = 1.8–5.5 V - making the R5F104GCAFB#X0 suitable for frequent parameter logging in industrial environments.

How does the R5F104GCAFB#X0 achieve ultra-low power consumption in STOP mode?

The R5F104GCAFB#X0 achieves 0.60 μA typical current in STOP mode by disabling the main CPU, flash, and most peripherals while retaining power to the RTC, LVD circuit, and selected wakeup sources (e.g., INTP0–INTP9, RTC alarm). This allows the R5F104GCAFB#X0 to maintain timekeeping and voltage monitoring with minimal energy draw for multi-year battery operation.

What development tools and debug interfaces are supported for the R5F104GCAFB#X0?

The R5F104GCAFB#X0 supports Renesas E2/E2 Lite emulators via SWD interface, with full compatibility for flash programming, real-time trace, and live register inspection. It also integrates an on-chip debug function compatible with CS+ and e2 studio IDEs - enabling rapid prototyping and validation of the R5F104GCAFB#X0 in industrial control applications.