Renesas R5F104MGAFA#10

Overview

R5F104MGAFA#10 from Renesas Electronics is a 32-bit RL78/G14 microcontroller featuring 192 KB flash memory, 20 KB RAM, and 80-pin LQFP-0.65 mm pitch package. It delivers 44 DMIPS at 32 MHz, operates from 1.6–5.5 V, supports -40 to +85°C ambient temperature (A-grade), and integrates 12-bit ADC (20 channels), UART/LIN, I²C, SPI, RTC, and ultra-low-power modes (0.60 μA in STOP with RTC+LVD).

For engineers reviewing the R5F104MGAFA#10 datasheet, R5F104MGAFA#10 pinout, R5F104MGAFA#10 application, or R5F104MGAFA#10 equivalent, key selection considerations include its 80-pin LQFP-0.65 mm footprint, A-grade industrial temperature rating, integrated LIN-capable UARTs for automotive body electronics, and hardware-based Data Transfer Controller (DTC) for autonomous peripheral data movement without CPU intervention.

Technical Context

The R5F104MGAFA#10 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 embeds dual clock domains: high-speed on-chip oscillator (selectable up to 32 MHz) and subsystem clock (32.768 kHz) for independent RTC and low-power operation.

Peripheral integration includes Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation (e.g., ADC conversion start on timer match), and Serial Interface (CSI) modules configured as SPI-compatible interfaces with programmable polarity/phase-distinct from standard SPI per Renesas documentation note.

Key Specifications

Pinout & Package

Package: 80-pin LQFP, 14 × 14 mm, 0.65 mm pitch, exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104LGAFA#10, the R5F104MGAFA#10 provides 16 additional GPIOs and enhanced peripheral routing flexibility; versus R5F104MGAFB#30, it offers easier hand-soldering and rework due to larger 0.65 mm pitch, while maintaining identical electrical behavior and software compatibility.

Availability

R5F104MGAFA#10 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart energy meters, and automotive body electronics requiring stable component supply across production lifecycles.

Supply support for R5F104MGAFA#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 industrial, automotive, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose applications - delivering optimized balance of performance, energy efficiency, and integrated peripherals for embedded control in appliances, meters, and sensor systems.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104MGAFA#10?

The R5F104MGAFA#10 operates at up to 32 MHz, delivering 44 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator. The device maintains this performance across its full 1.6–5.5 V supply range and -40°C to +85°C operating temperature, making R5F104MGAFA#10 suitable for deterministic real-time control in industrial and consumer equipment.

Does the R5F104MGAFA#10 support LIN bus communication, and how is it implemented?

Yes, the R5F104MGAFA#10 supports LIN bus communication through its UART peripherals, which include LIN-specific features such as automatic sync byte detection, checksum calculation (classic and enhanced), and break field generation. The UART modules used for LIN are configurable via registers and do not require external transceivers beyond standard LIN physical layer ICs. This capability is fully documented in the R5F104MGAFA#10 hardware manual and supported by Renesas' LIN driver libraries.

What are the power consumption characteristics of the R5F104MGAFA#10 in low-power modes?

The R5F104MGAFA#10 achieves 0.60 μA in STOP mode with only RTC and LVD active, and 66 μA/MHz in active RUN mode at 32 MHz. HALT mode draws 1.23 μA typical. These values are measured at VDD = 3.0 V and TA = 25°C per the official datasheet. The low-power profile makes R5F104MGAFA#10 ideal for battery-backed applications like utility meters and portable sensors where multi-year operation is required.

How many analog-to-digital converter (ADC) channels does the R5F104MGAFA#10 provide, and what is its resolution?

The R5F104MGAFA#10 integrates a 12-bit successive-approximation ADC with up to 20 analog input channels. It supports single-ended and differential input configurations, internal reference voltage (1.45 V), and temperature sensor readout. Conversion time is 1.6 μs per sample at maximum clock rate, and the ADC operates across the full 1.6–5.5 V supply range - enabling precise sensor interfacing in R5F104MGAFA#10-based measurement systems without external signal conditioning.

Is the R5F104MGAFA#10 pin-compatible with other RL78/G14 family members, and what are the constraints?

The R5F104MGAFA#10 is not pin-compatible with smaller-package RL78/G14 variants (e.g., 48- or 64-pin) due to its 80-pin LQFP-0.65 mm footprint. However, it shares identical peripheral register mapping, memory layout, and instruction set with all RL78/G14 devices. Firmware developed for R5F104MGAFA#10 can be ported to other G14 members with appropriate pin remapping and resource scaling - but hardware layout changes are required when switching to non-80-pin packages.