Renesas R5F101MFAFB#30

Overview

R5F101MFAFB#30 from Renesas is an RL78/G13 80-pin, 32-bit ultra-low-power MCU with 64 KB flash, 4 KB data flash, 4 KB RAM, 10-bit ADC (16 channels), and integrated RTC/LVD - designed for battery-powered industrial sensors and smart metering endpoints operating from 1.6 V to 5.5 V.

For engineers reviewing the R5F101MFAFB#30 datasheet, R5F101MFAFB#30 pinout, R5F101MFAFB#30 application, or R5F101MFAFB#30 equivalent, key selection criteria include its 0.57 μA STOP-mode current, 44 MHz-equivalent 41 DMIPS performance at 32 MHz, LFQFP-80 (12 × 12 mm, 0.5 mm pitch) package, and support for LIN/UART/SPI/I²C interfaces in a single-chip solution.

Technical Context

The R5F101MFAFB#30 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 subsystem clock). It integrates a 12-bit interval timer, real-time clock with calendar/alarm, and watchdog timer with dedicated low-speed oscillator.

Its peripheral set includes up to 16-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 2–4 channel DMA controller (2-cycle transfers between SFR and RAM), and serial interfaces: 2–4 UART/LIN channels, 2–8 CSI (SPI-compatible), and 3–10 I²C/Simplified I²C channels - all configurable without external components.

Key Specifications

Pinout & Package

Package: LFQFP-80 (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101MFAFB#30, R5F100MFAFB#30 adds data flash for persistent configuration storage without increasing pin count or footprint, while RL78/G14 R5F11MMAFP#30 trades ultra-low-power optimization for higher integration including CAN - making it suitable for networked control nodes rather than energy-constrained endpoints.

Availability

R5F101MFAFB#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home energy monitors, and HVAC controllers requiring stable component supply across long-lifecycle deployments.

Supply support for R5F101MFAFB#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 solutions for industrial, automotive, and IoT markets.

The RL78/G13 product line delivers true low-power MCUs optimized for cost-sensitive, battery-operated applications demanding high integration, robustness, and long-term supply assurance - especially in utility, sensor, and building automation.

FAQ

What is the maximum operating frequency and performance rating of the R5F101MFAFB#30?

The R5F101MFAFB#30 operates at up to 32 MHz with a measured performance of 41 DMIPS. Its RL78 CPU core achieves this through a 3-stage pipeline and high-efficiency CISC architecture, enabling deterministic real-time response in time-critical control loops without requiring external cache or accelerators.

Does the R5F101MFAFB#30 include data flash memory, and what is its endurance specification?

No, the R5F101MFAFB#30 does not include data flash memory - it belongs to the "101" family variant explicitly defined as data-flash-free in the RL78/G13 datasheet. This distinguishes it from "100" series parts like R5F100MFAFB#30, which integrate 4 KB data flash rated for 1,000,000 write/erase cycles.

What package type and pin count does the R5F101MFAFB#30 use, and is it RoHS-compliant?

The R5F101MFAFB#30 uses an 80-pin LFQFP package (12 × 12 mm, 0.5 mm pitch) with lead-free, RoHS-compliant construction. The "FB" suffix in the part number confirms the LFQFP-80 package, and the "#30" denotes tray packaging per Renesas ordering conventions.

Can the R5F101MFAFB#30 operate from a single 1.8 V supply, and what is its guaranteed temperature range?

Yes, the R5F101MFAFB#30 supports operation from 1.6 V to 5.5 V, fully functional at 1.8 V. It is qualified for industrial applications with a guaranteed ambient operating temperature range of –40°C to +85°C (D-grade), validated across voltage and process corners per JEDEC JESD47.

Which serial communication interfaces are supported by the R5F101MFAFB#30, and how many channels are available?

The R5F101MFAFB#30 supports UART/LIN (2–4 channels), CSI (SPI-compatible, 2–8 channels), and I²C/Simplified I²C (3–10 channels). Channel count depends on pin multiplexing and package size; the 80-pin LFQFP enables full peripheral allocation including simultaneous use of UART0 (LIN), CSI0, and I²C0.