Renesas R5F101GFAFB#V0

Overview

R5F101GFAFB#V0 from Renesas is a 48-pin LFQFP-48, 5 V-tolerant 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB data flash, and 12 KB RAM, operating from 1.6–5.5 V at up to 32 MHz (41 DMIPS), optimized for ultra-low-power industrial control applications including sensor nodes and battery-powered HMI.

For engineers reviewing the R5F101GFAFB#V0 datasheet, R5F101GFAFB#V0 pinout, R5F101GFAFB#V0 application, or R5F101GFAFB#V0 equivalent, key selection criteria include its 0.5 μA STOP mode current, integrated RTC + LVD, 26-channel 10-bit ADC, and dual UART/LIN support - all in an industrial-grade −40°C to +105°C rated package.

Technical Context

The R5F101GFAFB#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates a high-accuracy ±1.0% on-chip oscillator and supports HALT/STOP/SNOOZE low-power modes.

It features 8–16 channels of 16-bit timer, one 12-bit interval timer, one calendar RTC with alarm/correction, and a watchdog timer running on a dedicated low-speed oscillator - enabling precise timing and robust system supervision without external components.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 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 R5F100GFAFB#V0, the R5F101GFAFB#V0 eliminates data flash to reduce cost and die size while retaining full code flash, RAM, and peripheral set - ideal for fixed-parameter firmware. Compared with R5F101GFAFB#V1, it offers identical functionality but optimized for manual/small-batch tray handling.

Availability

R5F101GFAFB#V0 is available at Aetrix Electronics and suitable for industrial control, smart metering, and battery-powered HMI applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F101GFAFB#V0 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 automotive, industrial, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, energy-constrained industrial and consumer devices requiring high integration and extended temperature operation.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101GFAFB#V0?

The R5F101GFAFB#V0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs in HS mode, and it supports dynamic clock switching down to 32.768 kHz for ultra-low-power RTC operation. All timing specifications are validated across the full −40°C to +105°C industrial temperature range.

Does the R5F101GFAFB#V0 include data flash memory?

No, the R5F101GFAFB#V0 does not include data flash memory. Per Renesas part numbering convention, the "101" prefix indicates absence of data flash, distinguishing it from "100"-series variants (e.g., R5F100GFAFB#V0) which integrate 8 KB of data flash. The R5F101GFAFB#V0 retains 128 KB of code flash and 12 KB of SRAM for program and runtime data storage.

What package type and pin count does the R5F101GFAFB#V0 use?

The R5F101GFAFB#V0 uses a 48-pin LFQFP package (7 mm × 7 mm, 0.5 mm pitch), identified by the "FB" suffix in the part number. The "#V0" suffix specifies tray packaging per JEDEC standard J-STD-020. This package provides full access to all 48 I/O pins, including dedicated analog inputs, serial interface signals, and power/ground connections required for industrial-grade layout robustness.

How does the R5F101GFAFB#V0 support low-power system design?

The R5F101GFAFB#V0 supports low-power design through multiple hardware-optimized modes: STOP mode draws just 0.57 μA while maintaining RTC and LVD operation; HALT mode consumes 66 μA/MHz; and SNOOZE mode allows selective peripheral wake-up without full CPU restart. Its 1.6–5.5 V supply range and integrated POR/LVD eliminate external power management ICs in many applications.

Which serial communication interfaces are available on the R5F101GFAFB#V0?

The R5F101GFAFB#V0 integrates up to 10 I²C/Simplified I²C channels, 4 UART/LIN channels (supporting LIN 2.2 protocol), and 8 CSI (SPI-compatible) channels. These interfaces are independently configurable and share no fixed pin conflicts - enabling concurrent use of UART for host communication, I²C for sensor buses, and CSI for display or memory peripherals without resource contention.