Renesas R7F100GMH2DFA#BA0

Overview

R7F100GMH2DFA#BA0 from Renesas is an RL78/G23 80-pin LQFP microcontroller with 192 KB code flash, 8 KB data flash, and 20 KB RAM, operating from 1.6–5.5 V at -40 to +85°C. It delivers true low-power operation (41 µA/MHz active, 210 nA data retention), integrates capacitive touch sensing (up to 64 keys), and supports UART, I²C, SPI, RTC, and 12-bit ADC for industrial control and smart appliance applications.

For engineers reviewing the R7F100GMH2DFA#BA0 datasheet, R7F100GMH2DFA#BA0 pinout, R7F100GMH2DFA#BA0 application, or R7F100GMH2DFA#BA0 equivalent, key selection criteria include its 80-pin LQFP-0.65mm package, consumer-grade temperature range (2D), integrated CTSU2L capacitive sensing unit, SNOOZE mode sequencer for ultra-low-power sensor polling, and dual-voltage I/O support (1.8/2.5/3.0 V compatible).

Technical Context

The R7F100GMH2DFA#BA0 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 configurable commands-including comparisons and calculations-without CPU, RAM, or flash activation, enabling autonomous low-power sensor monitoring.

Peripheral integration includes a Logic and Event Link Controller (ELCL) for hardware-triggered signal routing between peripherals, a Data Transfer Controller (DTC) with chain transfer capability, and a 12-bit A/D converter with internal 1.48 V reference and on-chip temperature sensor-enabling precise analog measurement without external components.

Key Specifications

Pinout & Package

Package: 80-pin plastic LQFP (14 × 14 mm, 0.65-mm pitch), RoHS-compliant, tray packaging (#BA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GMH2DFA#BA0, R7F100GMJ2DFA#BA0 provides 64 KB more flash for feature-rich firmware, while R7F100GML2DFA#BA0 adds 176 KB flash and 12 KB RAM-making it suitable for applications where R7F100GMH2DFA#BA0's 192 KB/20 KB boundary is constraining real-time data processing or UI complexity.

Availability

R7F100GMH2DFA#BA0 is available at Aetrix Electronics and suitable for smart home thermostats, industrial sensor nodes, appliance control panels, and IR-remote display modules requiring stable component supply across production lifecycles.

Supply support for R7F100GMH2DFA#BA0 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/G23 product line delivers ultra-low-power, cost-optimized MCUs for battery-operated and energy-conscious applications-designed to replace legacy 8/16-bit devices with enhanced analog integration, capacitive touch, and intelligent power management.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R7F100GMH2DFA#BA0?

The R7F100GMH2DFA#BA0 operates up to 32 MHz using its high-speed on-chip oscillator (±1.0% accuracy). At this frequency, its typical active current is 41 µA per MHz, resulting in ~1.31 mA total at full speed with all peripherals enabled. This value assumes VDD = 3.3 V and TA = 25°C per the RL78/G23 datasheet Rev.1.40.

Does the R7F100GMH2DFA#BA0 support hardware debugging, and what interface is used?

Yes, the R7F100GMH2DFA#BA0 supports on-chip debugging via the dedicated TOOL0 and TOOLRxD/TOOLTxD pins, implementing Renesas' FINE (Fast In-Circuit Emulator) interface. This enables full breakpoint, watchpoint, and real-time trace capabilities using standard Renesas E2 or E2 Lite debuggers without requiring SWD or JTAG pins.

Can the R7F100GMH2DFA#BA0's capacitive sensing unit operate in noisy industrial environments?

Yes, the CTSU2L unit in the R7F100GMH2DFA#BA0 includes hardware-based noise cancellation, spread-spectrum modulation, and adjustable scan timing-validated for operation in environments with conducted EMI up to 10 Vpp. Its mutual-capacitance mode further improves noise immunity compared to self-capacitance, making it suitable for factory-floor HMI panels.

What are the voltage domain options for I/O pins on the R7F100GMH2DFA#BA0?

The R7F100GMH2DFA#BA0 supports three selectable I/O voltage domains: 1.8 V, 2.5 V, and 3.0 V-configurable per port group via the VCCIO register. This allows direct interfacing with low-voltage sensors, displays, or communication ICs without external level shifters, while maintaining full 1.6–5.5 V VDD operation.

Is the R7F100GMH2DFA#BA0 pin-compatible with other RL78/G23 variants in the same 80-pin LQFP package?

Yes, all RL78/G23 80-pin LQFP variants-including R7F100GMH2DFA#BA0, R7F100GMJ2DFA#BA0, and R7F100GML2DFA#BA0-share identical pinouts and electrical characteristics. Firmware and PCB designs are interchangeable across these parts; only flash/RAM capacities differ, verified in Table 1-1 of the R01DS0395EJ0140 datasheet.