Renesas R7F101GFG3CFP#AA1

Overview

R7F101GFG3CFP#AA1 from Renesas is a 44-pin LQFP-packaged RL78/G24 16-bit microcontroller featuring 128 KB code flash, 4 KB data flash, and 12 KB RAM, operating at up to 48 MHz with 50-µA/MHz active current. It integrates FAA for motor control acceleration, dual 12-bit ADCs (23-channel), DALI-2 interface, and 16-bit timers KB30–KB32 optimized for PFC and multi-phase power conversion in industrial lighting systems.

For engineers reviewing the R7F101GFG3CFP#AA1 datasheet, R7F101GFG3CFP#AA1 pinout, R7F101GFG3CFP#AA1 application, or R7F101GFG3CFP#AA1 equivalent, key selection criteria include its –40°C to +105°C industrial temperature grade, 44-pin LQFP (10 × 10 mm, 0.80-mm pitch) package, integrated DALI-2 transceiver, and hardware-based flexible application accelerator for real-time digital power control.

Technical Context

The RL78/G24 core combines CISC architecture with a 3-stage pipeline and configurable instruction timing (0.02083 µs min at 48 MHz). Its Flexible Application Accelerator (FAA) provides dedicated 32-bit signed arithmetic, limit operations, and shared 32-byte memory with the CPU for deterministic motor and power control loops.

Peripheral integration includes six I²C/Simplified I²C interfaces, two UART/LIN channels, one DALI-2 interface, and timer KB30–KB32 supporting complementary PWM outputs with 651-ps average resolution, dithering, and asynchronous forced stop triggered by comparators - all essential for Class D amplifiers and digitally controlled LED drivers.

Key Specifications

Pinout & Package

Package: 44-pin plastic LQFP (10 × 10 mm, 0.80-mm pitch), RoHS-compliant, tray packaging (#AA1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F101GFE3CFP#AA1, the R7F101GFG3CFP#AA1 provides 64 KB additional code space for advanced lighting features and firmware resilience; versus RL78/G14, it delivers hardware DALI-2 and FAA acceleration-reducing design effort and improving real-time determinism in power-constrained lighting and power applications.

Availability

R7F101GFG3CFP#AA1 is available at Aetrix Electronics and suitable for industrial LED drivers, digital power supplies, and motor control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R7F101GFG3CFP#AA1 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RL78/G24 product line targets intelligent power conversion and lighting control, integrating DALI-2, FAA, and ultra-low-power operation to replace discrete analog controllers and legacy 8-bit MCUs in cost-sensitive industrial applications.

FAQ

What is the maximum operating frequency and associated current consumption of the R7F101GFG3CFP#AA1?

The R7F101GFG3CFP#AA1 operates at up to 48 MHz with a typical active current of 50 µA/MHz, resulting in ~2.4 mA total at full speed. This is achieved using the high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and –40°C to +105°C, eliminating need for external crystal in many lighting and power applications.

Does the R7F101GFG3CFP#AA1 support DALI-2 communication natively, and what pins are used?

Yes, the R7F101GFG3CFP#AA1 includes a fully integrated DALI-2 physical layer and protocol engine. Pins P00 (DALITxD0) and P01 (DALIRxD0) provide the bidirectional DALI bus interface with internal line biasing and short-circuit protection, requiring only a single 100-Ω bus resistor and no external transceiver.

How does the Flexible Application Accelerator (FAA) in the R7F101GFG3CFP#AA1 improve motor control performance?

The FAA in the R7F101GFG3CFP#AA1 executes 32-bit signed multiply, add, subtract, and limit operations independently of the CPU, with 32-byte shared memory for real-time data exchange. This offloads field-oriented control (FOC) inner loops, reducing latency to under 1.2 µs and freeing the RL78 core for communication and supervisory tasks.

What are the flash memory capabilities of the R7F101GFG3CFP#AA1, particularly for firmware updates?

The R7F101GFG3CFP#AA1 features 128 KB code flash with boot swapping and flash shield window functionality. This enables safe over-the-air (OTA) updates by validating new firmware in a secondary bank before atomic swap, while the shield window prevents unauthorized readout or modification of protected sectors during field deployment.

Which timer peripherals in the R7F101GFG3CFP#AA1 support complementary PWM with dead-time insertion for power stage control?

The R7F101GFG3CFP#AA1 includes three dedicated 16-bit timers-KB30, KB31, and KB32-that support complementary PWM outputs with programmable dead-time, dithering, and asynchronous forced stop triggered by comparator events. These timers operate at up to 96 MHz internally, delivering 651-ps average PWM resolution for high-fidelity Class D amplifier and resonant converter control.