Renesas R5F100GAAFB#V0

Overview

R5F100GAAFB#V0 from Renesas is a 48-pin LFQFP-packaged RL78/G13 16-bit MCU with 128 KB flash, 8 KB data flash, 12 KB RAM, 32 MHz max CPU speed (41 DMIPS), and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode) for industrial control panels, smart sensors, and battery-powered metering systems.

For engineers reviewing the R5F100GAAFB#V0 datasheet, R5F100GAAFB#V0 pinout, R5F100GAAFB#V0 application, or R5F100GAAFB#V0 equivalent, key selection criteria include its industrial-grade temperature range (−40°C to +105°C), integrated RTC with calendar/alarm, 26-channel 10-bit ADC, and hardware multiplier/divider supporting real-time sensor fusion and deterministic control loops.

Technical Context

The R5F100GAAFB#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, 1–32 MHz selectable) and dedicated low-speed oscillator for watchdog/RTC.

Peripherals include 8× 16-bit timers, 1× 12-bit interval timer, 1× real-time clock with calendar and clock correction, 3× I²C/Simplified I²C channels, 2× UART/LIN, 2× CSI/SPI, 2-channel DMA, and 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor.

Key Specifications

Pinout & Package

Package: LFQFP-48 (7 × 7 mm, 0.5 mm pitch), lead-free, RoHS-compliant, industrial-grade thermal performance (θ_JA = 42°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100GAAFB#V0, R5F100GCAFB#V0 trades industrial temperature tolerance for lower qualification cost, while R5F101GAAFB#V0 removes data flash to simplify programming flow and reduce die area-both require PCB reuse but differ in runtime data persistence and environmental robustness.

Availability

R5F100GAAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart utility metering, building automation sensor nodes, and medical portable monitors requiring stable component supply across long product lifecycles.

Supply support for R5F100GAAFB#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 family delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications requiring high integration, long battery life, and robust peripheral sets-including RTC, ADC, and LIN/UART.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100GAAFB#V0?

The R5F100GAAFB#V0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This is achieved using the high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V and −40°C to +105°C. The RL78 CPU core's 3-stage pipeline and efficient CISC instruction set enable this throughput while maintaining ultra-low power consumption-critical for real-time control tasks in the R5F100GAAFB#V0.

Does the R5F100GAAFB#V0 support background data flash rewriting while executing application code?

Yes, the R5F100GAAFB#V0 supports Background Operation (BGO) for data flash. Its 8 KB data flash can be rewritten while instructions continue executing from program memory. This enables seamless firmware updates, parameter storage, and secure logging without halting real-time operations-a key capability confirmed in the R01DS0131EJ0380 datasheet Section 1.1.

What analog features are integrated into the R5F100GAAFB#V0 for sensor interfacing?

The R5F100GAAFB#V0 integrates a 10-bit ADC with 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor. These features allow direct connection of resistive, thermistor, and voltage-output sensors without external references or signal conditioning. The ADC operates across the full 1.6–5.5 V VDD range, ensuring consistent accuracy during battery discharge-verified in the RL78/G13 datasheet Section 1.1.

What is the industrial temperature grade of the R5F100GAAFB#V0, and how is it indicated in the part number?

The R5F100GAAFB#V0 is rated for −40°C to +105°C operation, designated by the "G" suffix in its part number (R5F100GAAFB#V0). This "G" denotes the industrial temperature grade per Renesas' RL78/G13 ordering convention (Figure 1-1, Page 3), distinguishing it from "A" (consumer: −40°C to +85°C) and "D" (industrial: −40°C to +85°C) variants-ensuring reliability in demanding environments.

How many general-purpose I/O pins does the R5F100GAAFB#V0 provide, and what interface levels do they support?

The R5F100GAAFB#V0 provides 39 general-purpose I/O pins in its 48-pin LFQFP package. These support multiple configurations: N-ch open drain (6 V tolerant), TTL input buffer, and on-chip pull-up resistors. Crucially, they enable different-potential interfacing-allowing direct connection to 1.8 V, 2.5 V, or 3 V external logic without level shifters-as specified in the RL78/G13 datasheet Section 1.1.