Renesas R5F104FFAFP#30

Overview

R5F104FFAFP#30 from Renesas is a 44-pin LQFP, 96 KB flash, 5.5 KB RAM RL78/G14 16-bit microcontroller featuring ultra-low power operation (66 μA/MHz), 1.6–5.5 V supply range, and integrated 10-bit ADC (20-channel), RTC, and UART/I²C/CSI interfaces. It targets battery-powered industrial sensors and smart metering endpoints requiring long runtime and mixed-signal control.

For engineers reviewing the R5F104FFAFP#30 datasheet, R5F104FFAFP#30 pinout, R5F104FFAFP#30 application, or R5F104FFAFP#30 equivalent, key selection criteria include its 96 KB code flash with data flash shield window, 44-pin 0.8 mm pitch LQFP package, -40°C to +85°C industrial temperature grade (D), and support for background data flash rewriting (BGO) at VDD = 1.8–5.5 V.

Technical Context

The R5F104FFAFP#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (@32 MHz high-speed oscillator) to 30.5 µs (@32.768 kHz subsystem clock). It integrates a Data Transfer Controller (DTC) with chain transfer and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event routing without CPU intervention.

Its analog subsystem includes a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus two comparator channels with selectable external/internal reference. The serial interface set comprises three UART channels (one LIN-capable), four I²C channels, and up to eight CSI channels - all configurable via peripheral I/O redirection registers (PIOR0/1).

Key Specifications

Pinout & Package

Package: 44-pin plastic LQFP (10 × 10 mm, 0.8 mm pitch), industrial-grade (D), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104FFAFP#30, R5F104FGAFP#30 offers scalable flash headroom for future feature expansion, while R5F104FEAFP#30 delivers identical functionality at lower memory cost-both maintain full pin and software compatibility within the RL78/G14 family.

Availability

R5F104FFAFP#30 is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for R5F104FFAFP#30 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 management solutions for industrial, automotive, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial and consumer devices requiring rich analog integration and robust real-time control.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F104FFAFP#30?

The R5F104FFAFP#30 operates at up to 32 MHz using its high-speed on-chip oscillator, achieving 44 DMIPS performance. At this frequency, it consumes 66 μA per MHz under typical conditions. In HALT mode with only RTC and LVD active, current drops to 0.60 μA-enabling decade-long operation on primary batteries. Its 1.6–5.5 V supply range supports direct connection to common energy sources without external regulators.

Does the R5F104FFAFP#30 support in-system programming and secure firmware updates?

Yes, the R5F104FFAFP#30 supports full in-system programming via its on-chip debug interface and boot swapping capability. It includes a flash shield window to prevent unauthorized access to protected code regions, and block-erase prohibition enhances security against malicious reprogramming. Self-programming is enabled across the full 1.8–5.5 V VDD range, allowing field updates even under brown-out conditions.

How many serial communication interfaces does the R5F104FFAFP#30 provide, and what protocols are supported?

The R5F104FFAFP#30 integrates three UART channels (one LIN-bus compatible), four I²C channels, and up to eight CSI (serial interface) channels. CSI supports SPI-like operation but is configured independently per channel. All interfaces are accessible through the Peripheral I/O Redirection Registers (PIOR0/1), enabling flexible pin mapping without hardware changes. No external transceivers are needed for basic I²C or UART operation.

What analog features are integrated into the R5F104FFAFP#30 for sensor interfacing?

The R5F104FFAFP#30 includes a 10-bit A/D converter with 20 input channels, selectable internal 1.45 V reference voltage, and an integrated temperature sensor calibrated to ±2°C accuracy. It also provides up to two comparator channels with window mode, high-speed/low-speed operation modes, and selectable reference sources (internal or external). These features enable direct connection of resistive, capacitive, and thermistor-based sensors without external signal conditioning.

Is the R5F104FFAFP#30 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104FFAFP#30 is fully pin-compatible with all other 44-pin LQFP RL78/G14 variants-including R5F104FEAFP#30 (48 KB flash), R5F104FGAFP#30 (128 KB flash), and R5F104FHAFP#30 (192 KB flash). They share identical pin functions, electrical characteristics, and thermal profiles, enabling drop-in replacement for memory scaling or firmware revision without PCB modification.