Renesas R7F102G4C2DNP#BA0

Overview

R7F102G4C2DNP#BA0 from Renesas is a 16-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 true low-power operation (37.5 µA/MHz active, 200 nA STOP mode) and integrates capacitive touch sensing (up to 29 keys), 10-bit ADC (10 channels), RTC, and UART/SPI/I²C interfaces for battery-powered consumer HMI applications.

For engineers reviewing the R7F102G4C2DNP#BA0 datasheet, R7F102G4C2DNP#BA0 pinout, R7F102G4C2DNP#BA0 application, or R7F102G4C2DNP#BA0 equivalent, key selection criteria include its 16-pin HWQFN footprint, 32 KB flash capacity, -40 to +85°C temperature grade, integrated CTSU2La capacitive sensing unit, and support for SNOOZE mode sequencer for ultra-low-power wake-up sequencing.

Technical Context

The R7F102G4C2DNP#BA0 implements the RL78 CPU core with 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). Its power architecture includes HALT, STOP, and SNOOZE modes, with STOP wakeup in under 4 µs and SNOOZE sequencer enabling up to 32 low-overhead background processes without CPU involvement.

Peripheral integration includes a 10-bit ADC with internal 1.48 V reference and temperature sensor, real-time clock with alarm and correction, watchdog timer, and event link controller (ELC) for hardware-triggered peripheral chaining. Communication interfaces comprise one UARTA channel, one simplified SPI (CSI), and two I²C channels - all confirmed for this 16-pin variant.

Key Specifications

Pinout & Package

Package: 16-pin HWQFN (3 × 3 mm, 0.50-mm pitch), exposed die pad, 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 R7F102G4E2DNP#BA0, the R7F102G4C2DNP#BA0 trades 32 KB less flash for identical low-power performance and peripheral set - making it optimal for cost-constrained, fixed-function designs. Against RL78/G13, it adds CTSU2La, SNOOZE sequencer, and 32 MHz operation - enabling new HMI and energy-harvesting use cases.

Availability

R7F102G4C2DNP#BA0 is available at Aetrix Electronics and suitable for smart home remotes, portable medical monitors, industrial panel meters, and wireless sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for R7F102G4C2DNP#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 Corporation 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 ultra-low-power embedded applications demanding rich HMI, precise timing, and robust peripheral integration - designed specifically for battery-operated consumer and industrial edge devices with stringent energy budgets.

FAQ

What is the maximum operating frequency of the R7F102G4C2DNP#BA0?

The R7F102G4C2DNP#BA0 supports a maximum operating frequency of 32 MHz using the high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.03125 µs. The device also supports ultra-low-speed operation at 32.768 kHz for RTC and low-power timing functions. Frequency selection is configurable via system clock control registers without external components.

Does the R7F102G4C2DNP#BA0 include an integrated temperature sensor?

Yes, the R7F102G4C2DNP#BA0 includes an integrated temperature sensor accessible via the 10-bit ADC. It is factory-calibrated and provides typical accuracy of ±3°C over the -40 to +85°C range. The sensor output is routed to ANI channel and can be read alongside other analog inputs without additional external circuitry.

Can the R7F102G4C2DNP#BA0 operate from a 1.8 V supply?

Yes, the R7F102G4C2DNP#BA0 operates across a 1.6 V to 5.5 V supply range. At 1.8 V, it supports full functionality including 32 MHz operation, CTSU2La touch sensing, and data flash programming. The internal LDO regulator maintains stable core voltage, and I/O pins are compatible with 1.8 V logic systems when configured appropriately.

How many capacitive touch channels does the R7F102G4C2DNP#BA0 support?

The R7F102G4C2DNP#BA0 supports up to 29 capacitive touch sensing channels using its CTSU2La unit. In self-capacitance mode, each channel uses one dedicated pin; in mutual-capacitance mode, combinations of transmit and receive pins form a matrix. All 16 pins on the R7F102G4C2DNP#BA0 package are CTSU-capable, with up to 10 usable as analog inputs simultaneously.

Is the R7F102G4C2DNP#BA0 pin-compatible with other RL78/G22 variants?

No - the R7F102G4C2DNP#BA0 is a 16-pin HWQFN device and is not pin-compatible with larger RL78/G22 packages (e.g., 20-pin LSSOP or 24-pin HWQFN). Pin compatibility exists only within the same package type and pin count; for example, R7F102G4C2DNP#BA0 and R7F102G4E2DNP#BA0 share identical pinout and footprint.