Renesas R7F100GLG3CFA#AA0

Overview

R7F100GLG3CFA#AA0 from Renesas is a 64-pin, industrial-grade RL78/G23 16-bit MCU with 512 KB code flash, 48 KB RAM, and 8 KB data flash, operating from 1.6–5.5 V. It delivers ultra-low power consumption (41 µA/MHz active, 210 nA data retention), integrated capacitive touch sensing (up to 64 keys), and supports real-time clock, multiple UART/I²C/SPI interfaces, and SNOOZE mode for battery-powered HMI applications.

For engineers reviewing the R7F100GLG3CFA#AA0 datasheet, R7F100GLG3CFA#AA0 pinout, R7F100GLG3CFA#AA0 application, or R7F100GLG3CFA#AA0 equivalent, key selection criteria include its LQFP-64 (0.65 mm pitch) package, -40°C to +105°C industrial temperature rating, on-chip 32.768 kHz RTC oscillator, and hardware-accelerated CTSU2L capacitive sensing unit for touch panel control.

Technical Context

The R7F100GLG3CFA#AA0 implements the RL78 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz high-speed mode) to 30.5 µs (32.768 kHz ultra-low-speed mode). Its SNOOZE mode sequencer executes up to 32 low-power background processes without CPU wake-up, using dedicated command set and internal timing resources.

Peripheral integration includes a Logic and Event Link Controller (ELCL) enabling configurable signal routing between peripherals, a Data Transfer Controller (DTC) supporting chain transfers triggered by interrupts, and a Remote Control Signal Receiver with 4-waveform pattern matching for IR remote decoding - all operating independently of CPU intervention in low-power states.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65-mm pitch), lead-free, RoHS-compliant, industrial temperature grade (C suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GLG3CFA#AA0, R7F100GLL3CFA#AA0 trades RAM capacity for cost in identical packaging, while R7F100GMJ3CFA#AA0 expands I/O and timer count at the expense of flash size and footprint - enabling scalable design reuse across product tiers.

Availability

R7F100GLG3CFA#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, and programmable logic controllers requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature compliance.

Supply support for R7F100GLG3CFA#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, and power management solutions for industrial, automotive, and IoT markets.

The RL78/G23 product line targets ultra-low-power, cost-sensitive industrial and consumer applications requiring integrated analog peripherals, capacitive touch, and robust real-time performance - with emphasis on seamless migration from legacy RL78/G1x devices.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R7F100GLG3CFA#AA0?

The R7F100GLG3CFA#AA0 operates at up to 32 MHz using its high-speed on-chip oscillator, with guaranteed functionality across its full 1.6–5.5 V supply range. At 32 MHz, minimum VDD is 2.7 V per the datasheet's AC characteristics table; operation below 2.7 V requires reduced frequency scaling (e.g., 24 MHz at 2.4 V, 16 MHz at 1.8 V). The R7F100GLG3CFA#AA0 maintains full peripheral functionality-including CTSU2L and RTC-across this voltage-frequency envelope.

Does the R7F100GLG3CFA#AA0 support hardware-based AES encryption or secure boot features?

No, the R7F100GLG3CFA#AA0 does not integrate hardware AES accelerators or dedicated secure boot ROM. It provides flash security features including block erase/write prohibition and flash shield window protection to prevent unauthorized readout of code flash contents. Secure firmware updates must be implemented in software using authenticated checksums or external secure elements; the R7F100GLG3CFA#AA0 relies on these configurable lock bits rather than cryptographic hardware.

Can the CTSU2L capacitive sensing unit on the R7F100GLG3CFA#AA0 operate during STOP mode?

Yes, the CTSU2L unit on the R7F100GLG3CFA#AA0 can perform touch scans autonomously during STOP mode using the subsystem clock (32.768 kHz), with results stored in dedicated registers accessible upon wake-up. This capability is enabled via the CTSU module's STOP mode control bit and requires proper configuration of the SNOOZE mode sequencer or dedicated CTSU trigger sources - allowing true low-power touch wake-up without CPU involvement.

What debug interface does the R7F100GLG3CFA#AA0 use, and is JTAG supported?

The R7F100GLG3CFA#AA0 uses the single-wire debug interface (SWD) via the TOOL0 (pin 1) and RESET (pin 2) pins - compatible with Renesas E2 studio and CS+ IDEs using E2 Lite or E2 emulator hardware. JTAG is not supported; the device implements the Renesas-specific FINE (Fast In-Circuit Emulator) debug protocol over SWD, providing full breakpoint, watchpoint, and memory access capabilities without requiring additional debug pins beyond the standard two.

How many independent UART channels does the R7F100GLG3CFA#AA0 support, and do they include LIN physical layer compliance?

The R7F100GLG3CFA#AA0 supports three UARTA channels, each capable of LIN 2.2-compliant physical layer operation via programmable slew rate control and dominant timeout detection. All three UARTA modules support automatic LIN header detection, checksum generation/verification, and wakeup-on-break functionality - enabling direct connection to LIN transceivers without external level-shifting or protocol offload ICs.