Renesas R7F102GBC2DNP#BA0

Overview

R7F102GBC2DNP#BA0 from Renesas is a 32-pin HWQFN-packaged RL78/G22 16-bit microcontroller with 32 KB code flash, 4 KB RAM, and 2 KB data flash, operating from 1.6–5.5 V. It delivers ultra-low power consumption (37.5 µA/MHz active, 200 nA STOP mode), integrates up to 29 capacitive touch sensors, and supports UART, I²C, SPI, RTC, and 16-bit timers for embedded control in consumer-grade applications (−40 to +85°C).

For engineers reviewing the R7F102GBC2DNP#BA0 datasheet, R7F102GBC2DNP#BA0 pinout, R7F102GBC2DNP#BA0 application, or R7F102GBC2DNP#BA0 equivalent, this page provides verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for low-power HMI and sensor-based designs.

Technical Context

The RL78/G22 core implements a CISC architecture with 3-stage pipeline and configurable instruction timing-0.03125 µs at 32 MHz (high-speed on-chip oscillator) or 30.5 µs at 32.768 kHz (subsystem clock). It supports multiply/divide/accumulate instructions and a 1 MB address space with four banks of 8-bit general-purpose registers.

Power management includes HALT, STOP, and SNOOZE modes; the latter enables CPU-free periodic processing via a 32-step sequencer using 21 command types. Peripheral integration includes Event Link Controller (20 event signals), Data Transfer Controller (DTC), and Capacitive Touch Sensing Unit (CTSU2La) supporting self- and mutual-capacitance configurations.

Key Specifications

Pinout & Package

32-pin HWQFN (5 × 5 mm, 0.50-mm pitch) with exposed die pad recommended to be connected to VSS. REGC requires 0.47–1 µF capacitor to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F102GBC2DNP#BA0, R7F102GBE2DNP#BA0 offers double code flash without altering power or peripheral capability, while R7F102GCC2DLA#AC0 trades pin count for higher analog/touch channel density in a smaller-area WFLGA package - enabling either scalability or miniaturization based on system constraints.

Availability

R7F102GBC2DNP#BA0 is available at Aetrix Electronics and suitable for smart home remotes, portable medical sensors, and white goods control systems requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for R7F102GBC2DNP#BA0 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/G22 product line targets cost-sensitive, ultra-low-power embedded applications in consumer and industrial equipment, emphasizing capacitive touch, sensor interfacing, and energy-efficient real-time control.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for R7F102GBC2DNP#BA0?

R7F102GBC2DNP#BA0 operates 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, the minimum instruction execution time is 0.03125 µs. The oscillator accuracy is ±1.0% over −20 to +85°C and VDD = 1.8–5.5 V, making it suitable for timing-critical but non-precision applications without external crystals.

Does R7F102GBC2DNP#BA0 support hardware-accelerated capacitive touch sensing, and how many keys can it handle?

Yes, R7F102GBC2DNP#BA0 integrates the CTSU2La unit for hardware-accelerated capacitive touch sensing, supporting up to 29 keys. It implements both self-capacitance (one pin per key) and mutual-capacitance (transmit/receive pin pairs) methods, with built-in noise cancellation, auto-calibration, and baseline tracking - eliminating the need for external touch controllers in most consumer HMI designs.

What are the memory protection features available on R7F102GBC2DNP#BA0?

R7F102GBC2DNP#BA0 provides flash memory security through a flash shield window that blocks readout of protected code regions, and per-block write/erase prohibition to prevent unauthorized firmware modification. These features are configured via dedicated security registers and enforced by on-chip logic - no software intervention required to maintain protection integrity during normal operation or debugging.

Can R7F102GBC2DNP#BA0 perform background data flash writes while executing application code from main flash?

Yes, R7F102GBC2DNP#BA0 supports background operation (BGO) for its 2 KB data flash memory. Instructions can be fetched and executed from code flash while data flash is being rewritten, enabling seamless firmware parameter updates, event logging, or calibration storage without interrupting real-time tasks or requiring application suspension.

What is the role of the SNOOZE mode sequencer (SMS) in R7F102GBC2DNP#BA0, and what operations does it support?

The SNOOZE mode sequencer (SMS) in R7F102GBC2DNP#BA0 executes up to 32 predefined steps - including ADC conversions, comparisons, and conditional branching - without waking the CPU, flash, or RAM. It uses 21 command types to implement autonomous, low-power monitoring (e.g., periodic temperature sampling → threshold check → wake only on alert), reducing average system current by orders of magnitude in duty-cycled applications.