Renesas R5F100JFAFA#30

Overview

R5F100JFAFA#30 from Renesas is a 52-pin LQFP-0.65mm, 16-bit RL78/G13 microcontroller with 96 KB flash, 8 KB data flash, 8 KB RAM, 10-bit ADC (16 channels), and real-time clock - designed for ultra-low-power industrial control and sensor interface applications operating from 1.6 V to 5.5 V.

For engineers reviewing the R5F100JFAFA#30 datasheet, R5F100JFAFA#30 pinout, R5F100JFAFA#30 application, or R5F100JFAFA#30 equivalent, key selection criteria include its 66 μA/MHz active current, STOP mode at 0.57 μA, integrated LIN-capable UART, and 52-pin LQFP package with 16-channel analog input support.

Technical Context

The R5F100JFAFA#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a 12-bit interval timer, calendar-based RTC with alarm and correction, and a watchdog timer driven by a dedicated low-speed on-chip oscillator.

Its peripheral set includes up to 4 UART/LIN channels, 10 CSI/SPI channels, and 10 I²C/Simplified I²C channels - all configurable per pin via register settings. The DMA controller supports 4 channels with 2-clock transfers between SFR and RAM, enabling efficient background data movement during ADC sampling or serial communication.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (10 × 10 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JFAFA#30, R5F100JGAFA#30 offers 33% more code flash without layout or power changes, while R5F101JFAFA#30 removes data flash to lower unit cost - both retain identical timing, I/O, and ultra-low-power behavior for drop-in compatibility in most designs.

Availability

R5F100JFAFA#30 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, and home appliance control requiring stable component supply across extended production lifecycles.

Supply support for R5F100JFAFA#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, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded systems - emphasizing energy efficiency, integrated analog peripherals, and simplified development for consumer, industrial, and metering applications.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100JFAFA#30?

The R5F100JFAFA#30 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This speed is achievable across the full 1.6 V to 5.5 V supply range and supports deterministic real-time execution for motor control, sensor fusion, and communication protocol handling in the R5F100JFAFA#30.

Does the R5F100JFAFA#30 include an integrated real-time clock (RTC)?

Yes, the R5F100JFAFA#30 includes a calendar-mode RTC with 99-year date range, alarm functionality, and automatic clock correction. It operates independently in STOP mode with only 0.57 μA current draw, enabling precise timestamping for data loggers and scheduling tasks without external components - a core feature of the R5F100JFAFA#30.

What are the analog capabilities of the R5F100JFAFA#30?

The R5F100JFAFA#30 features a 10-bit successive-approximation ADC with 16 analog input channels, internal 1.45 V reference voltage, and integrated temperature sensor. It supports single-ended and differential measurements, and the ADC can operate during low-power modes - making it suitable for precision sensing in battery-powered applications using the R5F100JFAFA#30.

How does the R5F100JFAFA#30 support low-power design?

The R5F100JFAFA#30 achieves ultra-low power via multiple modes: 66 μA/MHz active current, 0.57 μA STOP mode (RTC + LVD active), and HALT/SNOOZE modes. Its on-chip oscillators eliminate external crystals, and peripheral clocks can be gated individually - enabling aggressive power gating strategies essential for long-life battery operation in the R5F100JFAFA#30.

Is the R5F100JFAFA#30 pin-compatible with other RL78/G13 variants?

Yes, the R5F100JFAFA#30 shares the same 52-pin LQFP-0.65mm package and pinout with all other RL78/G13 devices in the "J" memory group (e.g., R5F100JGAFA#30, R5F101JFAFA#30), including identical signal assignments for power, reset, clocks, and I/O. This allows hardware reuse across firmware variants without PCB redesign for the R5F100JFAFA#30.