Renesas R7F100GJJ2DFA#BA0

Overview

R7F100GJJ2DFA#BA0 from Renesas is a 52-pin, consumer-grade RL78/G23 16-bit microcontroller with 256 KB code flash, 8 KB data flash, and 24 KB RAM, 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 rich peripherals including 16-bit timers, 12-bit ADC (26 channels), UART/LIN, I²C, and SPI for battery-powered HMI and sensor interface applications.

For engineers reviewing the R7F100GJJ2DFA#BA0 datasheet, R7F100GJJ2DFA#BA0 pinout, R7F100GJJ2DFA#BA0 application, or R7F100GJJ2DFA#BA0 equivalent, key selection criteria include its 52-pin LQFP-0.65mm package, -40°C to +85°C temperature grade, 256 KB flash/24 KB RAM memory configuration, and support for SNOOZE mode sequencer and CTSU2L capacitive sensing-critical for low-power industrial controls and smart appliances.

Technical Context

The RL78/G23 core implements a 3-stage pipeline CISC architecture with configurable instruction timing (0.03125 µs at 32 MHz high-speed mode; 30.5 µs at 32.768 kHz ultra-low-speed mode) and hardware multiply/divide/accumulate instructions. It integrates a dedicated SNOOZE mode sequencer (SMS) enabling up to 32 low-power autonomous operations without CPU wake-up.

Peripheral integration includes a Logic and Event Link Controller (ELCL) for flexible signal routing between functions, a Data Transfer Controller (DTC) supporting chain transfers, and dual-voltage I/O (1.8/2.5/3.0 V compatible) with N-ch open-drain capability. The CTSU2L unit supports both self- and mutual-capacitance sensing with on-chip voltage references and temperature compensation.

Key Specifications

Pinout & Package

Package: 52-pin plastic LQFP (10 × 10 mm, 0.65-mm pitch), RoHS-compliant, tray-packaged (#BA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GLJ2DFA#BA0 and R7F100GMJ2DFA#BA0, the R7F100GJJ2DFA#BA0 provides optimal balance of memory, I/O count, and package size for cost-sensitive consumer HMI designs - avoiding over-provisioned flash or unnecessary pin count while maintaining full peripheral feature set.

Availability

R7F100GJJ2DFA#BA0 is available at Aetrix Electronics and suitable for smart appliance control panels, portable medical sensors, industrial remote I/O modules, and energy-efficient smart home hubs requiring stable component supply and long-term production continuity.

Supply support for R7F100GJJ2DFA#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 targets ultra-low-power embedded applications demanding high integration, robust capacitive touch, and seamless connectivity - designed specifically for battery-operated and energy-conscious systems.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R7F100GJJ2DFA#BA0?

The R7F100GJJ2DFA#BA0 operates 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 instruction execution time is 0.03125 µs. The device maintains timing specifications down to 1.6 V, enabling direct operation from single-cell lithium or two alkaline batteries without regulation.

Does the R7F100GJJ2DFA#BA0 support hardware debugging, and what interface is used?

Yes, the R7F100GJJ2DFA#BA0 supports on-chip debugging via the on-chip debug emulator (OCDE) using the dedicated TOOL0 and TOOLRxD/TOOLTxD pins. It is compatible with Renesas E2 studio and CS+ IDEs, and supports breakpoints, watchpoints, and real-time variable monitoring without requiring external JTAG adapters.

How many capacitive touch channels does the R7F100GJJ2DFA#BA0 support, and what configurations are available?

The R7F100GJJ2DFA#BA0 integrates the CTSU2L unit supporting up to 32 self-capacitance keys (one pin per key) or up to 64 mutual-capacitance keys (8×8 matrix). It includes built-in voltage reference, temperature compensation, and noise rejection algorithms - all configurable via registers without external components.

What are the key low-power modes supported by the R7F100GJJ2DFA#BA0, and what is the typical current draw in each?

The R7F100GJJ2DFA#BA0 supports HALT (1.2 µA), STOP (0.32 µA), and SNOOZE modes. In STOP mode with RAM retention, current is 0.32 µA; in data retention mode (RAM retained, flash off), it drops to 210 nA. SNOOZE mode enables autonomous peripheral operation at ~1.5 µA - significantly lower than full active mode (41 µA/MHz).

Is the R7F100GJJ2DFA#BA0 pin-compatible with other RL78/G23 variants in the same package?

Yes, all RL78/G23 devices in the 52-pin LQFP-0.65mm package (e.g., R7F100GJF2DFA#BA0, R7F100GJK2DFA#BA0) share identical pinouts and electrical characteristics. Memory size and peripheral enablement differ by part number, but PCB layout and signal routing remain fully interchangeable across the 52-pin GJx family.