Renesas R5F100BCGNA#U0

Overview

R5F100BCGNA#U0 from Renesas is a 32-pin RL78/G13 16-bit microcontroller with 32 KB flash memory, 2 KB RAM, and 4 KB data flash, operating from 1.6 V to 5.5 V across -40°C to +105°C industrial temperature range. It integrates a real-time clock, 10-bit ADC (12 channels), UART/SPI/I²C interfaces, and ultra-low-power modes (0.57 μA in RTC+LVD mode), targeting battery-powered industrial sensors and motor control edge nodes.

For engineers reviewing the R5F100BCGNA#U0 datasheet, R5F100BCGNA#U0 pinout, R5F100BCGNA#U0 application, or R5F100BCGNA#U0 equivalent, key selection criteria include its HWQFN-32 package with 0.5-mm pitch, 32 MHz max CPU speed, on-chip debug support, self-programmable flash with boot swap, and compatibility with Renesas' RL78 development ecosystem including CS+ and e² studio.

Technical Context

The R5F100BCGNA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). It features dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog and RTC.

Peripherals include 8× 16-bit timers, 1× 12-bit interval timer, 1× calendar RTC with alarm and correction, 2-channel DMA, 16×16-bit multiplier/32-bit divider/MAC unit, and up to 26 analog input channels - all mapped to 29 I/O pins (including 5 N-ch open-drain ports with 6 V tolerance) in its 32-pin HWQFN package.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch), moisture-sensitive level 3, RoHS-compliant, thermal pad exposed on bottom for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BCGNA#U0, R5F100BGNA#U0 reduces memory capacity for lower-cost entry-level sensing, while R5F101BCGNA#U0 removes data flash to cut silicon area - both retain identical peripheral sets and industrial temperature grading.

Availability

R5F100BCGNA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart building sensors, portable instrumentation, and factory asset monitoring requiring stable component supply and long-term lifecycle assurance.

Supply support for R5F100BCGNA#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 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial and consumer devices requiring robust peripheral integration and seamless toolchain support.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100BCGNA#U0?

The R5F100BCGNA#U0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This enables deterministic execution of real-time control algorithms such as PID loops and sensor fusion within tight timing budgets. The R5F100BCGNA#U0 supports dynamic clock switching between high-speed and ultra-low-speed modes to balance performance and power consumption.

Does the R5F100BCGNA#U0 support in-system programming and secure firmware updates?

Yes, the R5F100BCGNA#U0 supports full in-system programming via its on-chip debug interface and includes boot swap functionality plus flash shield window protection. These features allow authenticated firmware updates in the field without requiring external programmers. The R5F100BCGNA#U0 also permits selective block erase prohibition to safeguard critical bootloader sections.

What are the analog capabilities of the R5F100BCGNA#U0, and how are they applied in sensor systems?

The R5F100BCGNA#U0 integrates a 10-bit successive-approximation ADC with up to 12 input channels, internal 1.45 V reference voltage, and an on-die temperature sensor. In sensor systems, this enables direct measurement of thermistors, bridge-based strain gauges, and gas sensor outputs without external references or signal conditioning. The R5F100BCGNA#U0's ADC supports scan mode and hardware-triggered conversions synchronized to timer events.

How does the R5F100BCGNA#U0 manage power in battery-constrained applications?

The R5F100BCGNA#U0 provides three ultra-low-power modes: HALT (66 μA/MHz), STOP (0.57 μA with RTC and LVD active), and SNOOZE (low-power peripheral operation with CPU halted). Its STOP mode maintains calendar RTC functionality and detects wake-up events from GPIO, ADC, or serial interfaces - enabling years of operation on coin-cell batteries. The R5F100BCGNA#U0's voltage detector (LVD) adds fail-safe brown-out protection.

Is the R5F100BCGNA#U0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100BCGNA#U0 shares identical pinout and electrical characteristics with all other 32-pin HWQFN variants in the RL78/G13 family, including R5F100BxGNA#U0 and R5F101BxGNA#U0 series. This allows hardware reuse across firmware variants - for example, migrating from R5F100BCGNA#U0 to R5F100BGNA#U0 requires only flash size adjustment in linker scripts, with no PCB changes needed.