Renesas R5F104FDAFP#50

Overview

R5F104FDAFP#50 from Renesas is a 44-pin LQFP, 96 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller with ultra-low power operation (66 μA/MHz), integrated 10-bit ADC (16 channels), RTC, and dual UART/LIN interfaces - deployed in industrial motor control and sensor node applications requiring extended battery life and robust peripheral integration.

For engineers reviewing the R5F104FDAFP#50 datasheet, R5F104FDAFP#50 pinout, R5F104FDAFP#50 application, or R5F104FDAFP#50 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, -40°C to +85°C industrial temperature grade (D suffix), 96 KB code flash with 4 KB data flash, and support for background data flash rewriting during program execution.

Technical Context

The R5F104FDAFP#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, enabling instruction execution times from 0.03125 µs (@32 MHz) to 30.5 µs (@32.768 kHz). It integrates a Data Transfer Controller (DTC) activated by 19–26 event sources via the Event Link Controller (ELC), enabling autonomous peripheral-to-memory transfers without CPU intervention.

Its mixed-signal subsystem includes an 8/10-bit ADC with internal 1.45 V reference and temperature sensor, dual UARTs with LIN-bus support, and a real-time clock with calendar function and alarm - all operating under a single 1.6–5.5 V supply with on-chip POR and 14-level LVD.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, industrial-grade (D suffix), rated for -40°C to +85°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FDAFP#50, the R5F104GDAFP#50 offers headroom for feature-rich firmware growth within identical PCB footprint, while the R5F104FCAFP#50 trades industrial qualification for lower unit cost - making the R5F104FDAFP#50 optimal for production-grade industrial designs needing guaranteed performance across full temperature range.

Availability

R5F104FDAFP#50 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and home appliance UI systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F104FDAFP#50 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 industrial, automotive, and IoT markets.

The RL78/G14 family delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer equipment - balancing ultra-low active/sleep current, rich analog integration, and LIN/UART connectivity in compact packages.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F104FDAFP#50?

The R5F104FDAFP#50 operates up to 32 MHz using its high-speed on-chip oscillator, achieving 44 DMIPS performance at 66 μA/MHz active current. At this frequency, typical active current is approximately 2.1 mA (32 MHz × 66 μA/MHz), verified per R01DS0053EJ0370 Section 1.1. Its ultra-low power STOP mode draws just 0.60 μA when only RTC and LVD remain active - a key specification for battery-backed applications.

Does the R5F104FDAFP#50 support in-system programming and secure flash protection?

Yes, the R5F104FDAFP#50 supports full in-system programming via on-chip debug interface and includes flash security features such as block erase prohibition and flash shield window. These mechanisms prevent unauthorized reading or modification of code flash contents during development or field deployment, as documented in Section 1.1 "Code Flash Memory" of the R01DS0053EJ0370 datasheet.

How many UART/LIN interfaces does the R5F104FDAFP#50 integrate, and are they hardware-supported?

The R5F104FDAFP#50 integrates three UART channels with native LIN-bus physical layer support, including automatic sync-break detection and LIN header generation. All three UARTs are implemented in hardware with dedicated registers and interrupt vectors - no bit-banging or software emulation required. This capability is confirmed in Section 1.1 "Serial Interfaces" and Table 1-1 of the R01DS0053EJ0370 datasheet.

What ADC resolution, channel count, and reference options are available on the R5F104FDAFP#50?

The R5F104FDAFP#50 features an 8/10-bit successive approximation ADC with 16 analog input channels. It supports both external voltage references and an internal 1.45 V reference, plus an integrated temperature sensor. The ADC operates across the full 1.6–5.5 V supply range, enabling direct measurement of sensors powered from the same rail - specifications fully detailed in Section 1.1 "A/D Converter" of R01DS0053EJ0370.

Is the R5F104FDAFP#50 pin-compatible with other RL78/G14 variants in the same 44-pin LQFP package?

Yes, all RL78/G14 devices in the 44-pin LQFP-0.8 mm pitch package - including R5F104FDAFP#50, R5F104GDAFP#50, and R5F104FCAFP#50 - share identical pinouts and electrical characteristics. This allows direct substitution within the same footprint for memory or temperature grade upgrades, as confirmed by consistent pin configuration diagrams across Sections 1.3.5 and Table 1-1 of R01DS0053EJ0370.