Renesas R7F100GEG3CNP#HA0

Overview

R7F100GEG3CNP#HA0 from Renesas is a 40-pin HWQFN-packaged RL78/G23 16-bit microcontroller with 128 KB code flash, 8 KB data flash, and 16 KB RAM, operating from 1.6–5.5 V at -40 to +105°C. It delivers ultra-low power consumption (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, IICA, and SAU for industrial control and sensor node applications.

For engineers reviewing the R7F100GEG3CNP#HA0 datasheet, R7F100GEG3CNP#HA0 pinout, R7F100GEG3CNP#HA0 application, or R7F100GEG3CNP#HA0 equivalent, key selection criteria include its 40-pin HWQFN-0.5mm pitch package, industrial temperature grade (3C), SNOOZE mode sequencer for autonomous low-power sensing, and integrated CTSU2L supporting up to 64 keys in mutual capacitance mode.

Technical Context

The R7F100GEG3CNP#HA0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz high-speed oscillator or 30.5 µs @ 32.768 kHz subsystem clock). It supports background data flash rewriting (BGO) and self-programming with boot swapping, enabling field firmware updates without external programming hardware.

Its peripheral set includes a 32-bit interval timer, 16-bit TAU with up to 16 channels, real-time clock with alarm and correction, and Logic & Event Link Controller (ELCL) for hardware-triggered inter-peripheral signal routing-eliminating CPU intervention for time-critical event chains such as sensor wake-up → ADC conversion → DMA transfer → sleep.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.50-mm pitch), exposed die pad recommended to be connected to VSS. Pin count and function mapping align with RL78/G23 40-pin product definition (R01DS0395EJ0140, Page 17).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GEH3CNP#HA0 and R7F100GFG3CNP#HA0, the R7F100GEG3CNP#HA0 strikes optimal balance: sufficient 128 KB flash for certified firmware + bootloader, 16 KB RAM for real-time sensor buffering and stack depth, and identical ultra-low-power architecture - making it the default choice for industrial edge nodes requiring longevity, security, and field upgradeability.

Availability

R7F100GEG3CNP#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart building controllers, PLC I/O modules, and energy monitoring gateways requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for R7F100GEG3CNP#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 specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.

The RL78/G23 product line targets cost-sensitive, ultra-low-power embedded applications demanding robust peripheral integration, security, and long-term supply - particularly in industrial automation, home appliances, and sensor edge devices.

FAQ

What is the maximum operating frequency and corresponding instruction timing for the R7F100GEG3CNP#HA0?

The R7F100GEG3CNP#HA0 supports up to 32 MHz operation using the high-speed on-chip oscillator. At this frequency, the minimum instruction execution time is 0.03125 µs. The core also supports ultra-low-speed operation at 32.768 kHz (subsystem clock), where the minimum instruction time extends to 30.5 µs - enabling precise RTC timing and ultra-low-power background tasks without CPU wake-up.

Does the R7F100GEG3CNP#HA0 support hardware-accelerated capacitive touch sensing, and what configurations are available?

Yes, the R7F100GEG3CNP#HA0 integrates the CTSU2L (Capacitive Touch Sensing Unit Level 2) supporting both self-capacitance (up to 32 keys, single-pin per key) and mutual capacitance (up to 64 keys in 8×8 matrix) modes. It operates across the full VDD range of 1.8–5.5 V and includes hardware noise cancellation, automatic drift compensation, and dedicated scan sequencer - eliminating need for external touch controller ICs in industrial HMI designs.

How does the SNOOZE mode sequencer (SMS) in the R7F100GEG3CNP#HA0 reduce system power consumption?

The SNOOZE mode sequencer (SMS) in the R7F100GEG3CNP#HA0 executes up to 32 pre-programmed commands (e.g., ADC start, compare result, GPIO toggle) autonomously - without waking the CPU, flash memory, or RAM. This allows the device to remain in ultra-low-power STOP mode while performing periodic sensing and decision logic, reducing average current draw by >90% compared to CPU-driven polling in battery-powered applications.

What serial communication interfaces are available on the R7F100GEG3CNP#HA0, and how many channels does each support?

The R7F100GEG3CNP#HA0 provides UARTA (3–6 channels, LIN-bus compatible), IICA (4–10 channels), and SAU (3–8 CSI/SPI, 3–6 UART, 4–10 I2C). For this 40-pin variant, all interfaces are fully accessible via multiplexed pins (e.g., P10–P17 for UARTA/IICA, P50–P51/P60–P62 for SAU/IICA), with peripheral I/O redirection (PIOR) enabling flexible pin assignment without PCB redesign.

Is the R7F100GEG3CNP#HA0 qualified for industrial temperature operation, and what is its specified ambient range?

Yes, the R7F100GEG3CNP#HA0 is qualified for industrial applications (3C grade) with an operating ambient temperature range of -40 to +105°C. This rating is confirmed by the "C" in the part number suffix and aligns with Renesas' industrial qualification standards - ensuring reliable operation in harsh environments such as factory floors, outdoor metering, and motor control enclosures.

What flash memory security features does the R7F100GEG3CNP#HA0 provide to protect firmware intellectual property?

The R7F100GEG3CNP#HA0 includes two key flash security features: (1) Block erase/write prohibition, which locks specific code flash blocks against modification, and (2) Flash shield window, which restricts read access to designated memory regions during debug or normal operation. These features are configured via dedicated registers and do not require external secure elements - providing foundational IP protection for industrial firmware deployments.