Renesas R7F102G7C2DNP#AA0

Overview

R7F102G7C2DNP#AA0 from Renesas is a 24-pin HWQFN-packaged RL78/G22 16-bit microcontroller with 32 KB code flash, 4 KB RAM, and 2 KB data flash, operating from 1.6 to 5.5 V. It delivers ultra-low power consumption (37.5 µA/MHz active, 200 nA STOP mode), integrates a 10-bit ADC (10 channels), capacitive touch sensing (up to 29 keys), and real-time clock - deployed in battery-powered consumer HMI systems such as smart remote controls and portable appliance interfaces.

For engineers reviewing the R7F102G7C2DNP#AA0 datasheet, R7F102G7C2DNP#AA0 pinout, R7F102G7C2DNP#AA0 application, or R7F102G7C2DNP#AA0 equivalent, key selection considerations include its 24-pin HWQFN (4 × 4 mm, 0.50-mm pitch) package, 32 KB flash / 4 KB RAM memory configuration, -40 to +85°C temperature grade (D-field), integrated CTSU2La capacitive sensing unit, and support for UARTA, IICA, and SAU peripherals.

Technical Context

The R7F102G7C2DNP#AA0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting configurable instruction execution times from 0.03125 µs (32 MHz high-speed oscillator) to 30.5 µs (32.768 kHz subsystem clock). It features SNOOZE mode sequencer (SMS) with 32-process capability and 21 command set for low-power sensor polling without CPU wake-up.

Peripheral integration includes 8-channel 16-bit TAU timers, 1-channel 32-bit interval timer, RTC with alarm and correction, watchdog timer, and event link controller (ELC) enabling 20 configurable peripheral-to-peripheral event triggers - all coordinated under a unified low-power management system with HALT, STOP, and SNOOZE modes.

Key Specifications

Pinout & Package

Package: HWQFN-24 (4 × 4 mm, 0.50-mm pitch), exposed die pad (recommended connected to VSS), consumer-grade (-40 to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F102G7C2DNP#AA0, the R7F102G7E2DNP#AA0 offers double flash capacity without layout change, while the R7F102G6C2DSP#HA0 trades pin count and peripheral richness for lower assembly cost and smaller footprint - making each viable for distinct tiers of HMI complexity and production volume.

Availability

R7F102G7C2DNP#AA0 is available at Aetrix Electronics and suitable for smart remote controls, portable thermostats, wireless sensor nodes, and appliance control panels requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for R7F102G7C2DNP#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 management solutions for automotive, industrial, and IoT markets.

The RL78/G22 product line targets ultra-low-power human-machine interface applications, integrating capacitive touch, rich analog peripherals, and intelligent low-power sequencing to replace discrete touch controllers and reduce system-level power consumption.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R7F102G7C2DNP#AA0?

The R7F102G7C2DNP#AA0 supports up to 32 MHz operation using the high-speed on-chip oscillator, with guaranteed functionality across its full 1.6 V to 5.5 V supply range. At 32 MHz, minimum instruction execution time is 0.03125 µs; accuracy is ±1.0% over VDD = 1.8–5.5 V and TA = -20 to +85°C. The device also supports ultra-low-speed operation at 32.768 kHz for RTC and deep-sleep functions.

Does the R7F102G7C2DNP#AA0 support hardware-accelerated capacitive touch sensing, and how many keys can it handle?

Yes, the R7F102G7C2DNP#AA0 integrates the CTSU2La capacitive touch sensing unit, supporting up to 29 keys in self-capacitance mode (one pin per key) or scalable matrix configurations using mutual-capacitance methods. It operates across the full 1.8–5.5 V VDD range and includes automatic drift compensation, noise rejection, and low-power scan modes - all implemented without CPU intervention via the SNOOZE mode sequencer.

What debug interface does the R7F102G7C2DNP#AA0 use, and which pins are required?

The R7F102G7C2DNP#AA0 uses Renesas' proprietary FINE debug interface, accessed via the TOOL0 (P40) and RESET pins. No additional debug pins (e.g., SWDIO/SWCLK) are required. This single-wire interface supports full in-circuit debugging, flash programming, and real-time trace through compatible emulators such as the E2 or E2 Lite, with minimal PCB footprint impact.

Can the R7F102G7C2DNP#AA0 execute code while rewriting data flash memory?

Yes, the R7F102G7C2DNP#AA0 supports Background Operation (BGO) for data flash memory. Code execution continues uninterrupted from program memory during data flash erase/write cycles, enabling seamless parameter updates, firmware patching, or event logging without application stalls or visible latency - critical for responsive HMI and real-time control tasks.

What are the key differences between the R7F102G7C2DNP#AA0 and the R7F102G7E2DNP#AA0?

The R7F102G7C2DNP#AA0 and R7F102G7E2DNP#AA0 share identical 24-pin HWQFN packaging, pinout, peripherals, low-power specifications, and temperature grade (-40 to +85°C). Their sole difference is code flash capacity: 32 KB in the R7F102G7C2DNP#AA0 versus 64 KB in the R7F102G7E2DNP#AA0. All other electrical, thermal, and functional characteristics are fully matched.