Renesas R5F100GEANA#U0

Overview

R5F100GEANA#U0 from Renesas is a 48-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, 3 KB RAM, 10-bit ADC (26 channels), and real-time clock - designed for ultra-low-power industrial control and sensor interface applications operating from 1.6 V to 5.5 V.

For engineers reviewing the R5F100GEANA#U0 datasheet, R5F100GEANA#U0 pinout, R5F100GEANA#U0 application, or R5F100GEANA#U0 equivalent, key selection criteria include its 64 KB code flash with self-programming, 0.57 μA STOP mode current, 32 MHz max CPU speed, integrated LVD and POR, and support for UART, I²C, and CSI serial interfaces in compact 7 × 7 mm HWQFN.

Technical Context

The R5F100GEANA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator and supports multiple low-power modes including HALT, STOP, and SNOOZE.

It features a 10-bit A/D converter with up to 26 input channels, internal 1.45 V reference voltage, and temperature sensor; DMA controller with 4 channels; and peripheral functions including 16-bit timers (12 channels), RTC with calendar/alarm, and watchdog timer with dedicated low-speed oscillator.

Key Specifications

Pinout & Package

Package: HWQFN-48 (7 × 7 mm, 0.5 mm pitch, exposed thermal pad, NA suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100GEAFB#V0, the R5F100GEANA#U0 offers superior thermal performance and smaller PCB area in HWQFN, while R5F101GEANA#U0 trades data flash for lower unit cost - making the R5F100GEANA#U0 optimal for compact, field-upgradable industrial nodes requiring embedded data retention.

Availability

R5F100GEANA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, energy metering modules, and factory automation I/O terminals requiring stable component supply across extended product lifecycles.

Supply support for R5F100GEANA#U0 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/G13 family targets cost-sensitive, ultra-low-power general-purpose applications - delivering high integration, robustness, and toolchain maturity for rapid development of battery-operated and industrial control systems.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100GEANA#U0?

The R5F100GEANA#U0 operates at up to 32 MHz with the RL78 CPU core, achieving 41 DMIPS performance. Its minimum instruction execution time is 0.03125 μs under high-speed on-chip oscillator conditions, enabling deterministic real-time response for motor control, sensor fusion, and communication stack processing within the R5F100GEANA#U0's resource constraints.

Does the R5F100GEANA#U0 support in-system programming and secure firmware updates?

Yes, the R5F100GEANA#U0 supports full in-system programming via its on-chip debug interface and self-programming capability. It includes flash shield window protection and block erase prohibition features to prevent unauthorized rewriting. The R5F100GEANA#U0 also supports boot swap functionality, enabling safe dual-bank firmware updates without runtime interruption - critical for reliable field maintenance of deployed R5F100GEANA#U0-based devices.

What are the low-power consumption specifications of the R5F100GEANA#U0 in STOP and HALT modes?

In STOP mode with only RTC and LVD active, the R5F100GEANA#U0 consumes 0.57 μA typical. In HALT mode, it draws 66 μA per MHz of active CPU frequency. These values are measured at VDD = 3.0 V and TA = 25°C per R01DS0131EJ0380 Rev.3.80. The R5F100GEANA#U0 achieves this through optimized power gating and clock domain isolation, making it suitable for long-life battery applications where the R5F100GEANA#U0 remains responsive to external interrupts while minimizing quiescent current.

How many analog input channels does the R5F100GEANA#U0 ADC support, and what reference options are available?

The R5F100GEANA#U0 integrates a 10-bit successive approximation register (SAR) ADC supporting up to 26 analog input channels (ANI0–ANI25). It provides an internal 1.45 V reference voltage and supports external reference inputs via AVREFP/AVREFM pins. The ADC operates across the full 1.6–5.5 V VDD range, and the internal temperature sensor is accessible as ANI25 - all confirmed in the R5F100GEANA#U0's RL78/G13 datasheet section 1.1 Features and Table 1-1 memory mapping.

What serial communication interfaces are integrated into the R5F100GEANA#U0, and how many instances are available?

The R5F100GEANA#U0 integrates three serial interface types: Simplified SPI (CSI) with up to 8 channels, UART/LIN with up to 4 channels, and I²C/Simplified I²C with up to 10 channels. These are multiplexed across GPIO pins and support concurrent operation. The R5F100GEANA#U0's CSI module is compatible with standard SPI timing but uses Renesas-specific register mapping - verified in the R01DS0131EJ0380 datasheet sections 1.1 and 2.3.3.