Renesas R7F100GEJ2DNP#HA0

Overview

R7F100GEJ2DNP#HA0 from Renesas is a 40-pin 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 true low-power operation (41 µA/MHz active, 210 nA data retention), integrates capacitive touch sensing (CTSU2L), 12-bit ADC (26 channels), dual DAC, RTC, and multiple serial interfaces including UARTA (up to 6 ch), IICA (up to 10 ch), and CSI (up to 8 ch), targeting battery-powered industrial HMI and sensor nodes.

For engineers reviewing the R7F100GEJ2DNP#HA0 datasheet, R7F100GEJ2DNP#HA0 pinout, R7F100GEJ2DNP#HA0 application, or R7F100GEJ2DNP#HA0 equivalent, key selection criteria include its 40-pin HWQFN package with exposed die pad, consumer-grade temperature range (−40 to +85°C), integrated CTSU2L for up to 64-key mutual-capacitance touch, and SNOOZE mode sequencer enabling ultra-low-power periodic sensing without CPU wake-up.

Technical Context

The RL78/G23 core implements a 3-stage pipeline CISC architecture with configurable instruction timing (0.03125 µs min at 32 MHz, 30.5 µs at 32.768 kHz). It supports multiply/divide/accumulate instructions and 1 MB address space, enabling deterministic real-time control in resource-constrained systems.

Power management includes HALT, STOP, and SNOOZE modes; the SNOOZE mode sequencer executes up to 32 preconfigured commands (e.g., ADC sampling, comparison, GPIO toggle) autonomously using only the subsystem clock, eliminating CPU, flash, and RAM activation during periodic sensing tasks.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.50-mm pitch) with exposed die pad (recommended connection to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GEJ2DNP#HA0, R7F100GFK2DFP offers higher memory but demands layout revision, while R7F100GEH2DNP provides identical form-factor and pin compatibility at lower density - making it the only true hardware-compatible alternative for memory-constrained revisions.

Availability

R7F100GEJ2DNP#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart home appliance controls, and battery-powered HMI requiring stable component supply across production lifecycles.

Supply support for R7F100GEJ2DNP#HA0 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 delivering 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 long battery life - designed specifically for cost-sensitive, space-constrained industrial and consumer devices.

FAQ

What is the maximum operating frequency and voltage range supported by the R7F100GEJ2DNP#HA0?

The R7F100GEJ2DNP#HA0 operates at up to 32 MHz using its high-speed on-chip oscillator and supports a wide single-supply voltage range of 1.6 V to 5.5 V. This allows direct integration with common battery sources (e.g., 2×AA, Li-ion, or coin cells) and eliminates level-shifting requirements for mixed-voltage peripherals. The ±1.0% oscillator accuracy over −20 to +85°C ensures reliable timing without external crystals in most applications.

Does the R7F100GEJ2DNP#HA0 support capacitive touch sensing, and what configurations are available?

Yes, the R7F100GEJ2DNP#HA0 integrates the CTSU2L capacitive touch sensing unit supporting both self-capacitance (up to 32 keys on dedicated pins) and mutual-capacitance (8×8 matrix = 64 keys) configurations. It operates under VDD = 1.8–5.5 V and includes built-in noise cancellation algorithms. The 40-pin HWQFN package provides dedicated TSxx pins (e.g., P30, P70–P73) and supports touch button, slider, and proximity detection without external components.

What low-power modes does the R7F100GEJ2DNP#HA0 offer, and how does SNOOZE mode differ from STOP mode?

The R7F100GEJ2DNP#HA0 supports HALT, STOP, and SNOOZE modes. STOP mode halts the CPU and most peripherals while retaining RAM and register contents at 210 nA. SNOOZE mode goes further: it disables the CPU, flash, and RAM entirely while allowing a dedicated sequencer to execute up to 32 preloaded commands (e.g., ADC sampling, comparison, GPIO toggle) using only the low-speed subsystem clock - achieving sub-µA average current in periodic sensing applications.

Can the R7F100GEJ2DNP#HA0 perform background data flash writes while executing code from main flash memory?

Yes, the R7F100GEJ2DNP#HA0 supports Background Operation (BGO) for its 8 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously erasing or programming data flash sectors - essential for seamless firmware updates, parameter logging, or configuration storage without interrupting real-time operation or requiring complex dual-bank schemes.

What is the package type and thermal requirement for the R7F100GEJ2DNP#HA0?

The R7F100GEJ2DNP#HA0 uses a 40-pin HWQFN package (6 × 6 mm, 0.50-mm pitch) with an exposed die pad. Renesas specifies that the exposed pad must be connected to VSS for optimal thermal performance and electrical noise immunity. A minimum 0.47 µF capacitor is required between the REGC pin and VSS to stabilize the internal regulator, and the pad should be soldered to a dedicated thermal land on the PCB per IPC-7351 guidelines.