Renesas R7F100GMJ3CFB#AA0

Overview

R7F100GMJ3CFB#AA0 from Renesas is an RL78/G23 80-pin, 256-KB flash, 24-KB RAM ultra-low-power 16-bit MCU operating from 1.6 to 5.5 V, featuring 210-nA data retention current, 41-µA/MHz active current, and integrated capacitive touch sensing (CTSU2L) for up to 64 keys - deployed in industrial HMI control panels requiring extended battery life and robust noise immunity.

For engineers reviewing the R7F100GMJ3CFB#AA0 datasheet, R7F100GMJ3CFB#AA0 pinout, R7F100GMJ3CFB#AA0 application, or R7F100GMJ3CFB#AA0 equivalent, key selection criteria include its 80-pin LFQFP-0.5mm package, -40°C to +105°C industrial temperature grade, 256-KB code flash with 8-KB data flash, and support for SNOOZE mode sequencer-driven autonomous peripheral operation without CPU wake-up.

Technical Context

The R7F100GMJ3CFB#AA0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz high-speed on-chip oscillator) to 30.5 µs (32.768 kHz subsystem clock). It integrates a SNOOZE mode sequencer (SMS) capable of executing 32 sequential low-power processes using 21 command types, enabling sensor polling and event handling without CPU involvement.

Peripheral integration includes a Logic and Event Link Controller (ELCL) for configurable signal routing between peripherals, a Data Transfer Controller (DTC) with chain transfer support, and dual-mode A/D converter (8/10/12-bit resolution across 26 channels) with internal 1.48-V reference and temperature sensor - all operating within the same 1.6–5.5 V supply range as the core.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.50-mm pitch), RoHS-compliant, industrial-grade (C-field), tray packaging (#AA0).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit ultra-low-power MCU applications.

Compared with R7F100GMJ3CFB#AA0, the R7F100GLJ3CFB#AA0 delivers double flash/RAM for complex protocol stacks or GUI buffering, while R7F100GMK3CFB#AA0 offers 50% more flash than R7F100GMJ3CFB#AA0 with only 33% more RAM - making it ideal for applications adding modest feature sets without increasing data-handling requirements.

Availability

R7F100GMJ3CFB#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, PLC I/O modules, and power supply monitors requiring stable component supply across long-life production programs.

Supply support for R7F100GMJ3CFB#AA0 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 industrial, automotive, and IoT markets.

The RL78/G23 product line delivers true ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial controls, sensor nodes, and human-machine interfaces - emphasizing sub-µA retention, hardware-accelerated capacitive touch, and autonomous peripheral sequencing.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R7F100GMJ3CFB#AA0?

The R7F100GMJ3CFB#AA0 supports up to 32 MHz operation using its high-speed on-chip oscillator, with guaranteed functionality across its full 1.6–5.5 V supply range. At 32 MHz, minimum instruction execution time is 0.03125 µs. The oscillator maintains ±1.0% accuracy from -20°C to +85°C and 1.8–5.5 V - making R7F100GMJ3CFB#AA0 suitable for timing-critical industrial communications without external crystal dependency.

Does the R7F100GMJ3CFB#AA0 support hardware-based capacitive touch sensing, and what configurations are available?

Yes, the R7F100GMJ3CFB#AA0 integrates the CTSU2L capacitive sensing unit supporting both self-capacitance (up to 32 independent keys) and mutual capacitance (8×8 matrix = 64 keys) configurations. It operates at VDD = 1.8–5.5 V and includes hardware noise cancellation, automatic drift compensation, and dedicated TSCAP pin - enabling robust touch interfaces in electrically noisy industrial settings without external ICs or firmware-intensive scanning.

How does the SNOOZE mode sequencer (SMS) in the R7F100GMJ3CFB#AA0 reduce system-level power consumption?

The SNOOZE mode sequencer in the R7F100GMJ3CFB#AA0 executes up to 32 pre-programmed operations - including ADC conversions, GPIO toggles, timer comparisons, and data transfers - entirely autonomously without CPU, flash, or RAM activation. This eliminates wake-up latency and CPU leakage, reducing average current in sensor polling applications to sub-µA levels. R7F100GMJ3CFB#AA0 uses SMS to maintain responsiveness while achieving >90% power savings versus continuous active-mode polling.

What are the data flash endurance and background operation capabilities of the R7F100GMJ3CFB#AA0?

The R7F100GMJ3CFB#AA0 includes 8 KB of data flash rated for 1,000,000 write/erase cycles (typical) and supports Background Operation (BGO), allowing full program execution from code flash while simultaneously rewriting data flash. This enables seamless runtime parameter updates, logging, or OTA configuration changes without halting application code - a critical capability for R7F100GMJ3CFB#AA0 deployments in unattended industrial equipment.

Which communication interfaces are supported by the R7F100GMJ3CFB#AA0, and how many instances are available?

The R7F100GMJ3CFB#AA0 supports up to 10 I²C/Simplified I²C channels, 6 UART/UARTA channels (with LIN-bus physical layer support), 8 CSI/SPI channels, and 1 Remote Control Signal Receiver (REMC) channel. All interfaces are multiplexed across GPIO pins and configurable via peripheral I/O redirection registers (PIOR), enabling flexible board layout and protocol adaptation - essential for R7F100GMJ3CFB#AA0 integration into multi-sensor industrial gateways.