Renesas R7F100GFN3CFP#AA0

Overview

R7F100GFN3CFP#AA0 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 at -40 to +105°C industrial temperature range. It integrates capacitive touch sensing (up to 64 keys), 12-bit ADC (26 channels), dual 8-bit DACs, RTC, and multiple serial interfaces including UARTA (6 channels), IICA (10 channels), and CSI (8 channels), targeting low-power industrial HMI and sensor node applications.

For engineers reviewing the R7F100GFN3CFP#AA0 datasheet, R7F100GFN3CFP#AA0 pinout, R7F100GFN3CFP#AA0 application, or R7F100GFN3CFP#AA0 equivalent, key selection considerations include its 256 KB flash/24 KB RAM configuration, 44-pin LQFP-0.8 mm pitch package, integrated CTSU2L capacitive sensing unit, STOP-mode wakeup time < 4 µs, and support for SNOOZE mode sequencer for autonomous low-power peripheral operation without CPU involvement.

Technical Context

The RL78/G23 core implements a 3-stage pipeline CISC architecture with configurable instruction timing (0.03125 µs min @ 32 MHz high-speed clock or 30.5 µs @ 32.768 kHz ultra-low-speed clock). It supports multiply/divide/MAC instructions and features a 1 MB address space with four banks of eight 8-bit general-purpose registers.

Power management includes HALT, STOP, and SNOOZE modes - the latter enabled by a dedicated sequencer executing up to 32 preconfigured commands (from 21 available) to perform analog measurements, comparisons, and peripheral control autonomously, reducing active CPU time and enabling sub-µA average system current in periodic sensing tasks.

Key Specifications

Pinout & Package

Package: 44-pin plastic LQFP (10 × 10 mm, 0.80-mm pitch), RoHS-compliant, tray packaging (#AA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F100GFN3CFP#AA0, the R7F100GFK3CFP#AA0 reduces flash/RAM capacity but maintains identical peripheral availability and power profile, whereas the R7F100GFL3CFP#AA0 doubles flash and increases RAM by 33%, enabling richer firmware without changing PCB layout or driver software.

Availability

R7F100GFN3CFP#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, energy monitoring meters, and appliance control units requiring stable component supply across extended product lifecycles.

Supply support for R7F100GFN3CFP#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G23 product line delivers true low-power performance for cost-sensitive industrial and consumer applications, combining sub-µA STOP mode, hardware-accelerated capacitive touch, and flexible clocking to minimize system-level power and BOM count.

FAQ

What is the maximum operating frequency and associated current consumption for R7F100GFN3CFP#AA0?

R7F100GFN3CFP#AA0 operates up to 32 MHz using the high-speed on-chip oscillator (±1.0% accuracy). At this frequency and 3.3 V supply, typical active current is 41 µA/MHz - resulting in ~1.3 mA total at full speed. In STOP mode, it draws only 210 nA while retaining full 24 KB RAM content, verified per R01DS0395EJ0140 datasheet Section 1.1.

Does R7F100GFN3CFP#AA0 support hardware-based capacitive touch sensing, and how many keys can it handle?

Yes, R7F100GFN3CFP#AA0 integrates the CTSU2L capacitive sensing unit supporting both self-capacitance (up to 32 independent keys) and mutual-capacitance (8×8 matrix, up to 64 keys). It includes hardware-based noise cancellation and automatic drift compensation, eliminating need for external touch controllers. Pin assignments like P30 (TSCAP), P31 (TS01), and P50–P61 are dedicated for CTSU2L electrode connections per datasheet Table 1-5.

Can R7F100GFN3CFP#AA0 execute code while rewriting data flash memory?

Yes, R7F100GFN3CFP#AA0 supports Background Operation (BGO) for data flash. Instructions can be fetched and executed from code flash memory while simultaneously erasing or programming the 8 KB data flash area. This enables seamless firmware parameter updates or logging without interrupting real-time tasks - a capability confirmed in Section 1.1 "Data flash memory" of R01DS0395EJ0140.

What debug and programming interfaces are available on R7F100GFN3CFP#AA0?

R7F100GFN3CFP#AA0 supports on-chip debugging via the standard 3-wire SWD interface using pins P40 (TOOL0), P11 (TOOLRxD), and P12 (TOOLTxD). It also enables flash programming through the same interface without requiring external debug probes beyond Renesas E2 or E2 Lite programmers. No JTAG support is provided - SWD is the sole debug transport per Section 1.1 "On-chip debugging".

Is R7F100GFN3CFP#AA0 pin-compatible with other RL78/G23 variants in the 44-pin LQFP package?

Yes, all RL78/G23 devices in the 44-pin LQFP-0.8 mm pitch package (e.g., R7F100GFF3CFP#AA0, R7F100GFG3CFP#AA0, R7F100GFH3CFP#AA0, R7F100GFJ3CFP#AA0, R7F100GFK3CFP#AA0, R7F100GFL3CFP#AA0, R7F100GFN3CFP#AA0) share identical pinouts and electrical characteristics. Firmware portability is ensured across the family - only flash/RAM sizes and peripheral enablement differ, controlled by option byte settings and runtime initialization.