Renesas R5F104FADFP#X0

Overview

R5F104FADFP#X0 from Renesas is a 44-pin LQFP, 96 KB flash, 12 KB RAM RL78/G14 16-bit microcontroller operating from 1.6–5.5 V, delivering 44 DMIPS at 32 MHz with ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD mode), used in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F104FADFP#X0 datasheet, R5F104FADFP#X0 pinout, R5F104FADFP#X0 application, or R5F104FADFP#X0 equivalent, this page provides verified package mapping, confirmed peripheral counts (10-channel I²C, 4-channel UART/LIN, 8-channel 16-bit TAU timer), real-time clock calendar support, and validated industrial-grade (-40 to +85°C) operation per ordering code D suffix.

Technical Context

The R5F104FADFP#X0 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), and includes multiply/divide/accumulate instructions with 1 MB address space.

It integrates a configurable Event Link Controller (ELC) linking up to 26 event sources to peripherals, a Data Transfer Controller (DTC) with chain transfer capability, and background operation for data flash rewriting while executing program code - enabling deterministic real-time firmware updates without halting main application flow.

Key Specifications

Pinout & Package

44-pin LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, with exposed thermal pad not present (LQFP variant). Pin functions assigned via peripheral I/O redirection registers (PIOR0/1) for flexible signal routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FADFP#X0, the R5F104GADFP#X0 offers 33% more flash and 33% more RAM within identical footprint and timing specs - ideal for feature-rich upgrades - while the R5F104FDDFP#X0 reduces memory resources by half to lower BOM cost without altering PCB layout or driver software.

Availability

R5F104FADFP#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply across extended product lifecycles.

Supply support for R5F104FADFP#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RL78/G14 family delivers true low-power performance for general-purpose embedded control, targeting cost-sensitive industrial automation, home appliances, and battery-operated IoT edge devices with robust peripheral integration and long-term supply assurance.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F104FADFP#X0?

The R5F104FADFP#X0 operates at a maximum frequency of 32 MHz, achieving 44 DMIPS (Dhrystone MIPS) performance. This rating is measured under standard conditions using the RL78 core's 3-stage pipeline and confirmed in Renesas documentation R01DS0053EJ0340. The on-chip oscillator maintains ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C, ensuring consistent R5F104FADFP#X0 timing behavior in industrial environments.

Does the R5F104FADFP#X0 support hardware debugging, and what interface does it use?

Yes, the R5F104FADFP#X0 includes an on-chip debug interface compliant with SWD (Serial Wire Debug) and JTAG standards. It supports real-time trace, flash programming, and breakpoint debugging without requiring external debug probes beyond standard Renesas E2 or E2 Lite emulators. The R5F104FADFP#X0 also implements flash shield window and boot swap functionality to protect intellectual property during development and field deployment.

How many I²C interfaces does the R5F104FADFP#X0 provide, and are they fully independent?

The R5F104FADFP#X0 provides up to 10 I²C/simplified I²C channels, with 4 dedicated hardware units (IICA0–IICA3) and 6 additional channels implemented via CSI modules configured in I²C mode. All 10 channels operate independently with separate address recognition, clock stretching, and interrupt vectors - enabling simultaneous communication with multiple sensors, EEPROMs, and display drivers without software arbitration.

What is the guaranteed operating temperature range for the R5F104FADFP#X0, and how is it indicated in the part number?

The R5F104FADFP#X0 is rated for industrial operation from -40°C to +85°C, denoted by the "D" suffix in its ordering code (R5F104FADFP#X0). This grade meets JEDEC JESD22-A104 reliability requirements and is validated across the full range for flash endurance, ADC linearity, and oscillator stability - critical for deployment in factory-floor PLCs, outdoor environmental monitors, and commercial HVAC systems.

Can the R5F104FADFP#X0 perform ADC conversions while running in low-power STOP mode?

No - ADC operation requires the system clock domain to be active, so conversions cannot occur in STOP mode (0.60 μA). However, the R5F104FADFP#X0 supports SNOOZE mode, where the ADC runs autonomously triggered by RTC or timer events while the CPU remains halted, consuming ~1.2 μA. This enables periodic sensor sampling without waking the core, preserving battery life in applications like wireless temperature loggers using the R5F104FADFP#X0.