Renesas R7F100GFG3CFP#HA0

Overview

R7F100GFG3CFP#HA0 from Renesas is a 44-pin LQFP-packaged 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 (CTSU2L), 12-bit ADC (26 channels), dual DAC, RTC, and multiple serial interfaces including UART, I²C, and CSI for industrial control and sensor node applications.

For engineers reviewing the R7F100GFG3CFP#HA0 datasheet, R7F100GFG3CFP#HA0 pinout, R7F100GFG3CFP#HA0 application, or R7F100GFG3CFP#HA0 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, -40 to +85°C industrial temperature grade, 256 KB flash/24 KB RAM memory configuration, and support for SNOOZE mode sequencer and ELCL event linking in resource-constrained embedded designs.

Technical Context

The R7F100GFG3CFP#HA0 implements the RL78 CPU core with CISC architecture and 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). It integrates a SNOOZE mode sequencer (SMS) capable of executing 32 sequential processes using 21 command types without CPU involvement, enabling low-power periodic sensing and wake-up control.

Peripheral integration includes a Logic and Event Link Controller (ELCL) for configurable signal routing between peripherals, a Data Transfer Controller (DTC) with chain transfer capability, and a capacitive sensing unit (CTSU2L) supporting both self-capacitance (up to 32 keys) and mutual capacitance (8×8 matrix, up to 64 keys) operation under 1.8–5.5 V supply conditions.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.80-mm pitch), industrial-grade (-40 to +85°C), embossed tape packaging (#HA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GFH3CFP#HA0 and R7F100GFK3CFP#HA0, the R7F100GFG3CFP#HA0 provides optimal balance of memory (256 KB flash/24 KB RAM), ultra-low power, and integrated CTSU2L for mid-complexity industrial HMI and sensor edge nodes - avoiding under-provisioning while minimizing cost premium over baseline variants.

Availability

R7F100GFG3CFP#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home control panels, programmable logic controller I/O modules, and energy metering front-ends requiring stable component supply across multi-year production cycles.

Supply support for R7F100GFG3CFP#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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/G23 product line targets ultra-low-power embedded control applications demanding high integration, robust capacitive touch, and long battery life - optimized for industrial automation, building controls, and consumer appliances.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R7F100GFG3CFP#HA0?

The R7F100GFG3CFP#HA0 operates at up to 32 MHz using the 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 also supports ultra-low-speed operation at 32.768 kHz for RTC and low-power timing, maintaining operation down to 1.6 V.

Does the R7F100GFG3CFP#HA0 support hardware encryption or secure boot features?

The R7F100GFG3CFP#HA0 does not integrate hardware cryptographic accelerators or secure boot ROM. Its security features are limited to flash memory protection mechanisms: block erase/write prohibition and flash shield window to prevent unauthorized readout. Secure firmware updates must be implemented in software using authenticated checksums or external secure elements.

How many capacitive touch channels does the R7F100GFG3CFP#HA0 support, and what configurations are available?

The R7F100GFG3CFP#HA0 integrates the CTSU2L capacitive sensing unit supporting up to 32 self-capacitance keys (single-pin per key) or up to 64 mutual-capacitance keys (8×8 matrix). It operates under 1.8–5.5 V supply and includes automatic drift compensation and noise rejection algorithms - all managed by dedicated hardware without CPU load.

Can the R7F100GFG3CFP#HA0's data flash be rewritten while executing code from main flash memory?

Yes, the R7F100GFG3CFP#HA0 supports Background Operation (BGO) for data flash, allowing program execution from code flash memory while simultaneously rewriting the 8 KB data flash. This enables seamless data logging, parameter storage, or firmware update staging without halting real-time application tasks.

What debug interface and programming method does the R7F100GFG3CFP#HA0 use?

The R7F100GFG3CFP#HA0 uses the on-chip debugging interface accessible via the TOOL0 (pin 5) and TOOLRxD/TOOLTxD (pins P11/P12) signals. It supports Renesas E2 studio and CS+ IDEs with E2 Lite or E2 emulator, enabling full JTAG/SWJ debugging, flash programming, and real-time trace - no external debug header required.