Renesas R7F100GEH3CNP#AA0

Overview

R7F100GEH3CNP#AA0 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. It delivers ultra-low power consumption (41 µA/MHz active, 210 nA data retention), integrates capacitive touch sensing (CTSU2L), RTC, 16-bit timers, 12-bit ADC (26 channels), and dual DAC outputs - deployed in industrial human-machine interfaces and battery-powered sensor nodes.

For engineers reviewing the R7F100GEH3CNP#AA0 datasheet, R7F100GEH3CNP#AA0 pinout, R7F100GEH3CNP#AA0 application, or R7F100GEH3CNP#AA0 equivalent, key selection criteria include its 40-pin HWQFN-0.5 mm pitch package, -40°C to +105°C industrial temperature grade, CTSU2L-based touch interface support, and SNOOZE mode sequencer for autonomous low-power peripheral sequencing without CPU wake-up.

Technical Context

The R7F100GEH3CNP#AA0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz). Its SNOOZE mode sequencer (SMS) executes up to 32 predefined commands-including comparisons and calculations-using dedicated hardware, enabling periodic sensor sampling and threshold checking while keeping CPU, flash, and RAM powered down.

Peripheral integration includes Logic & Event Link Controller (ELCL) for configurable event routing between modules, Data Transfer Controller (DTC) with chain transfer, and dual-clock domain operation: high-speed on-chip oscillator (±1.0% accuracy at 32 MHz) plus independent 32.768 kHz subsystem clock for RTC and low-power timing.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.50-mm pitch), exposed die pad recommended to be connected to VSS. Industrial-grade (-40°C to +105°C) with tray packaging (#AA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GEG3CNP#AA0 and R7F100GEJ3CNP#AA0, the R7F100GEH3CNP#AA0 uniquely balances industrial temperature rating, sufficient flash for secure bootloader + application, and full peripheral set - making it the default choice for new industrial HMI and sensor node designs requiring long-term reliability.

Availability

R7F100GEH3CNP#AA0 is available at Aetrix Electronics and suitable for industrial panel meters, smart thermostats, PLC I/O modules, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for R7F100GEH3CNP#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 solutions for automotive, industrial, and IoT markets.

The RL78/G23 product line targets ultra-low-power embedded control applications demanding robust capacitive touch, precise timing, and secure firmware updates - optimized for cost-sensitive industrial and consumer HMI systems.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time for the R7F100GEH3CNP#AA0?

The R7F100GEH3CNP#AA0 supports a maximum CPU operating frequency of 32 MHz using the high-speed on-chip oscillator. At this speed, the minimum instruction execution time is 0.03125 µs. This timing is confirmed in the RL78/G23 datasheet (R01DS0395EJ0140) Section 1.1, which specifies high-speed operation with ±1.0% accuracy across 1.8–5.5 V and -40°C to +105°C.

Does the R7F100GEH3CNP#AA0 support hardware-accelerated cryptographic functions?

No, the R7F100GEH3CNP#AA0 does not include dedicated cryptographic accelerators such as AES or SHA engines. Its security features are limited to flash memory block erase/write prohibition and boot swapping with flash shield window. For applications requiring certified encryption, Renesas' RA-family or Secure MCU variants must be considered instead of the RL78/G23 series.

Can the CTSU2L unit on the R7F100GEH3CNP#AA0 drive mutual-capacitance touch panels larger than 8×8?

No - the CTSU2L unit in the R7F100GEH3CNP#AA0 supports mutual capacitance only in an 8×8 matrix configuration (up to 64 keys), as explicitly stated in Section 1.1 of the datasheet. Expanding beyond this requires external touch controller ICs or migrating to higher-pin-count RL78 devices with additional CTSU channels, neither of which is supported by the R7F100GEH3CNP#AA0's 40-pin HWQFN package.

What debug interface does the R7F100GEH3CNP#AA0 use, and is SWD supported?

The R7F100GEH3CNP#AA0 uses Renesas' proprietary FINE (Fast In-Circuit Emulator) debug interface via the TOOL0 and TOOLRxD/TOOLTxD pins. It does not support ARM-standard SWD or JTAG. Debugging requires Renesas E2 or E2 Lite emulators and CS+ or e2 studio IDE - confirmed in Section 1.1 "Features" and Section 4.3.10 (PIOR register) of the R01DS0395EJ0140 datasheet.

Is the 32.768 kHz RTC clock source on the R7F100GEH3CNP#AA0 derived solely from an external crystal, or can it use the internal low-speed oscillator?

The RTC on the R7F100GEH3CNP#AA0 requires an external 32.768 kHz crystal connected to X1/X2 pins; the internal low-speed oscillator is not RTC-capable. Section 1.1 explicitly lists "Realtime clock: 1 channel (counting of one second to 99 years…)" under crystal-dependent features, and Figure 1-1 shows X1/XT1 and X2/XT2 as dedicated RTC crystal pins - no internal RC option is documented for RTC timekeeping.