Renesas R5F101GAAFB#V0

Overview

R5F101GAAFB#V0 from Renesas is a 48-pin LFQFP-packaged 16-bit RL78/G13 microcontroller with 128 KB flash memory, 8 KB data flash, 12 KB RAM, and industrial-grade operation up to +105°C. It features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), 32 MHz max CPU speed (41 DMIPS), integrated 10-bit ADC (26 channels), real-time clock, and multiple serial interfaces including UART, I²C, and CSI for embedded control in battery-powered and thermally demanding applications.

For engineers reviewing the R5F101GAAFB#V0 datasheet, R5F101GAAFB#V0 pinout, R5F101GAAFB#V0 application, or R5F101GAAFB#V0 equivalent, key selection criteria include its G-grade temperature rating (−40°C to +105°C), absence of on-chip data flash (R5F101x series), LFQFP-48 0.5-mm pitch package, and support for low-power modes (HALT/STOP/SNOOZE) in resource-constrained industrial sensing and motor control designs.

Technical Context

The R5F101GAAFB#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs at 32 MHz to 30.5 μs at 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–32 MHz selectable), 16-bit timer array (up to 16 channels), and background operation-capable data flash rewrite capability - though this part omits data flash per R5F101x family designation.

Power management includes on-chip POR and LVD with 14 programmable voltage levels, DMA controller (2/4 channels), and hardware multiplier/divider. Its I/O structure supports mixed-voltage interfacing (1.8 V/2.5 V/3 V), N-ch open-drain outputs (6 V tolerant), and key interrupt functionality - all optimized for deterministic real-time response in safety-aware industrial firmware.

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 R5F101GAAFB#V0, R5F100GAAFB#V0 adds data flash for persistent settings but increases cost and write-cycle management overhead; R5F101GAANA#U0 retains identical functionality in a leadless package that improves thermal performance and reduces board area - critical for compact industrial modules.

Availability

R5F101GAAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and energy metering front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F101GAAFB#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power 16-bit MCU performance for cost-sensitive industrial applications, emphasizing energy efficiency, robustness across wide temperature ranges, and integrated analog/mixed-signal capabilities.

FAQ

What is the maximum operating frequency and associated DMIPS rating for the R5F101GAAFB#V0?

The R5F101GAAFB#V0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This rating is achieved using the high-speed on-chip oscillator with ±1.0% accuracy over the full 1.8–5.5 V supply and −40°C to +105°C temperature range. The RL78 CPU core's 3-stage pipeline and optimized instruction set deliver consistent throughput for real-time control tasks without external clock components.

Does the R5F101GAAFB#V0 include on-chip data flash memory?

No, the R5F101GAAFB#V0 does not include on-chip data flash memory. As indicated by the "101" in its part number per Renesas' RL78/G13 naming convention, this variant provides 128 KB of code flash and 12 KB of RAM but omits dedicated data flash. Applications requiring nonvolatile parameter storage must use external EEPROM or leverage code flash sectors with self-programming routines.

What package type and pin count does the R5F101GAAFB#V0 use?

The R5F101GAAFB#V0 uses a 48-pin LFQFP package with 7 mm × 7 mm body size and 0.5 mm pin pitch. The "#V0" suffix confirms tray packaging for surface-mount assembly. This leaded package offers mechanical robustness and ease of inspection compared to QFN alternatives, making it suitable for industrial environments with vibration or thermal cycling stress.

What is the operating temperature grade of the R5F101GAAFB#V0?

The R5F101GAAFB#V0 is rated for industrial operation from −40°C to +105°C, designated by the "G" in its part number. This extended temperature range qualifies it for deployment in motor drives, power supplies, and outdoor sensor enclosures where ambient conditions exceed standard commercial limits, ensuring timing stability and flash retention under thermal stress.

Which serial communication interfaces are supported by the R5F101GAAFB#V0?

The R5F101GAAFB#V0 supports multiple serial interfaces: up to 8 CSI (Simplified SPI) channels, 4 UART/LIN channels, and up to 10 I²C/Simplified I²C channels. These are implemented via multiplexed GPIO pins (e.g., P10/P11/P12), allowing flexible peripheral assignment. Hardware flow control, LIN break detection, and multi-master I²C arbitration are natively supported without firmware overhead.